AT&T OHIO GUIDEBOOK

PART 1 - Preface and Table of Contents Original Sheet 1 SECTION 1 - Title Sheet and Symbols

GUIDEBOOK OF THE OHIO BELL TELEPHONE COMPANY

The Ohio Bell Telephone Company is a wholly owned subsidiary of AT&T Teleholdings, Inc. (also referred to herein as AT&T Midwest) and an indirect wholly owned subsidiary of AT&T Inc. AT&T Ohio is a registered trade name of The Ohio Bell Telephone Company. Services offered pursuant to this Guidebook may be offered under those registered trade names or under the brand name AT&T. All regulated services offered in this Guidebook by The Ohio Bell Telephone Company, whether under that name, the trade name AT&T Ohio, or under the brand name AT&T, are subject to the terms and conditions of this Guidebook (The Ohio Bell Telephone Company is also referred to herein as “the Company” or “Company”).

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PART 1 - Preface and Table of Contents Original Sheet 1 SECTION 2 - Table of Contents

TABLE OF CONTENTS

PART TOPIC

1 PREFACE AND TABLE OF CONTENTS Section 1: Title Sheet and Symbols Section 2: Table of Contents Section 3: Alphabetical Subject Index

2 GENERAL TERMS AND CONDITIONS Section 1: Definitions and Abbreviations Section 2: Regulations Section 3: Optional Payment Plans Section 4: Temporary Suspension of Service Section 5: Construction Charges Section 6: Vacant Section 7: Special Service Arrangements Section 8: Promotional Service Offerings Section 9: Vacant Section 10: Minimum Telephone Service Standards (MTSS)Recourse Credits Section 11: Competitive Exchanges

3 SERVICE CHARGES Section 1: Service Charges Section 2: Vacant

4 EXCHANGE ACCESS SERVICES Section 1: Vacant Section 2: Exchange Lines and Usage Section 3: Foreign Type Exchange Services Section 4: Vacant Section 5: Other Exchange Access Services Section 6: Vacant

5 CENTREX SERVICES Section 1: Centrex Service (CS) Section 2: Other Centrex Services

6 CENTRAL OFFICE SERVICES Section 1: Direct Inward Dialing (DID) Services Section 2: Vacant Section 3: Automatic Call Distribution (ACD) Services Section 4: Vacant Section 5: Area Wide Networking (AWN) Service Section 6: Vacant Section 7: Digital Transport Services Section 8: Telephone Answering Service (TAS) Section 9: Other Central Office Services

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PART 1 - Preface and Table of Contents Original Sheet 2 SECTION 2 - Table of Contents

TABLE OF CONTENTS (cont'd)

PART TOPIC

7 CENTRAL OFFICE OPTIONAL FEATURES Section 1: Custom Calling Features Section 2: Advanced Custom Calling Features Section 3: Complementary Network Services (CNS) Section 4: Remote Call Forwarding (RCF) Service Section 5: Other Central Office Optional Features

8 MISCELLANEOUS SERVICES Section 1: Information Provider Services Section 2: Call Restriction Services Section 3: Emergency/Group Alerting Services Section 4: Diverse Routing Services Section 5: Special Governmental Services Section 6: Vacant Section 7: Vacant Section 8: Other Miscellaneous Services Section 9: Vacant Section 10: Vacant Section 11: Vacant

9 MESSAGE TOLL SERVICES Section 1: Message Telecommunications Services and Rate Schedules Section 2: V&H Coordinates Section 3: Optional Calling Plans Section 4: Rate Centers

10 800 Services Section 1: Vacant Section 2: Other 800 Services Section 3: 800 Directory Assistance

11 OPERATOR SERVICES Section 1: Operator Service Charges Section 2: Directory Assistance (DA) Service Section 3: Information Call Completion Service Section 4: Other Operator Services

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PART 1 - Preface and Table of Contents Original Sheet 3 SECTION 2 - Table of Contents

TABLE OF CONTENTS (cont'd)

PART TOPIC

12 DIRECTORY SERVICES Section 1: Directory Listings Section 2: Vacant Section 3: Vacant Section 4: Vacant

13 PUBLIC TELEPHONE SERVICES Section 1: Vacant Section 2: Vacant Section 3: Vacant

14 VACANT Section 1: Vacant Section 2: Vacant Section 3: Vacant Section 4: Vacant Section 5: Vacant Section 6: Vacant Section 7: Vacant

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PART 1 - Preface and Table of Contents Original Sheet 4 SECTION 2 - Table of Contents

TABLE OF CONTENTS (cont'd)

PART TOPIC

15 DEDICATED COMMUNICATIONS SERVICES Section 1: General Section 2: Channel Services Section 3: Base Rate through OC-n Services Section 4: Extension Services of Customer Networks Section 5: Other Dedicated Communications Services

16 VACANT

17 ISDN SERVICES Section 1: ISDN Direct Services Section 2: ISDN Prime Services Section 3: ISDN BRI Single B Channel Packet Service

18 VIDEO SERVICES Section 1: Advanced Video Service (AVS)

19 UNBUNDLED NETWORK ELEMENTS AND NUMBER PORTABILITY Section 1: Vacant Section 2: Vacant Section 3: Vacant Section 4: Vacant Section 5: Vacant Section 6: Vacant

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PART 1 - Preface and Table of Contents Original Sheet 5 SECTION 2 - Table of Contents

TABLE OF CONTENTS (cont'd)

PART TOPIC

20 GRANDFATHERED SERVICES (Grandparented) Section 1: Preface Section 2: Vacant Section 3: Vacant Section 4: Exchange Access Services Section 5: Centrex Services Section 6: Central Office Services Section 7: Central Office Optional Features Section 8: Miscellaneous Services Section 9: Message Toll Services Section 10: Wide Area Telecommunications Service Section 11: Vacant Section 12: Vacant Section 13: Vacant Section 14: Vacant Section 15: Dedicated Communications Services Section 16: Vacant Section 17: ISDN Services Section 18: Vacant Section 19: Vacant

21 ACCESS SERVICES Section 1: Vacant Section 2: Vacant

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PART 1 - Preface and Table of Contents Original Sheet 1 SECTION 3 - Alphabetical Subject Index

NUMERICAL SUBJECT INDEX

TOPIC PART SECTION SHEET 128, 258 and 384 Service (see Dedicated Communications Services) 800 Calling Plan 10 2 6 800 Data Base Services 10 2 9 800 Directory Assistance Service 10 3 1 976 Service (see Sponsor Priced Audiotex Service)

ALPHABETICAL SUBJECT INDEX

TOPIC PART SECTION SHEET

A

Abbreviations Used in This Guidebook 2 1 14 Abuse or Fraudulent Use 2 2 17 Additional Listings 12 1 4 Advance Payments and Deposits 2 2 18 Advanced Custom Calling Features 7 2 - - Automatic Callback 7 2 5 - Call Screening 7 2 6 - Call Trace 7 2 5 - Call Waiting ID 7 2 4 - Caller ID with Name 7 2 4 - Calling Party Number Blocking 7 2 2 - Pay Per Use 7 2 9 - Repeat Dialing 7 2 2 Advanced Video Service (AVS) 18 1 1 Airport Service (Grandfathered) 20 5 8 Alternate Answering 7 3 6 Alternate Use Arrangements 15 2 39

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ALPHABETICAL SUBJECT INDEX (cont’d)

TOPIC PART SECTION SHEET

C (cont’d)

Cancellation of Applications for Service 2 2 4 Call Restriction Services 8 2 - CCSA Access Line, Additional Facilities for Central Office Areas in Competitive Markets 4 5 10 - Exchange Services 4 5 12 - Private Line Services 15 1 28 Central Office Concentrator Service 6 8 5 Central Office Multiplexing and Cross-Connect Services (see Dedicated Communications Services) Central Office Optional Features 7 - - Central Office Services 6 - - Centralized Attendant Service 8 8 6 Centrex Service 5 1 1 Centrex Service (Grandfathered) 20 5 1 Centrex LSI Service (Grandfathered) 20 5 12 Channel Conditioning 15 2 43 Channels (Analog) 15 2 1 Channels (Grandfathered) 20 15 2 Charge Increases, Effect on Pending Orders Circuits 2 2 21 Charter Number Services 8 8 1 Circuits 4 5 2 Combination Main Station Service 4 5 1 Community Calling Service (Grandfathered) 20 4 27 Competitive Exchanges 2 11 1

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PART 1 - Preface and Table of Contents Original Sheet 5 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont'd)

TOPIC PART SECTION SHEET

C (cont’d)

CompleteLink (Grandfathered 06/29/07) 20 4 40 CompleteLink (Grandfathered 10/24/03) 20 4 14 CompleteLink Select III Save/Win Plan (Grandfathered) 20 4 50 CompleteLink Winback Reloaded (Grandfathered) 20 4 52 CompleteLink 2.0 4 2 38 Complex Service 3 1 1 Complimentary Network Services (CNS) 7 3 - Concentrator-Identifier Equipment 6 8 1 Conduit Occupancy 2 6 7 Construction Charges 2 5 - Construction Charges, General Regulations 2 5 1 Connections for Private Line Services 2 9 48 Custom BizSaver® Packages 4 5 17 Custom BizSaver® Packages (Grandfathered) 20 4 19 Custom BizSaver® Winback Packages 4 5 31 Custom Calling Features 7 1 - Call Forwarding 7 1 1 Call Waiting 7 1 1 Three-Way Calling 7 1 1 Speed Calling 7 1 1 Custom Calling Service Features 7 1 1 Custom Number Service 8 8 76 Customer Billing Adjustments 2 2 20 Customer Control Option 7 3 7 Customer Location Alternate Routing (CLAR) 8 4 1 Customer Premises Equipment 8 8 - Dual Element Charges 8 8 18 Emergency Reporting, Alerting and Dispatching Services 8 8 59 Establishment and Furnishing of Service 8 8 13 General Provisions 8 8 12 Initial Contract 8 8 14 Interconnection Equipment 8 8 38 Key Telephone Systems 8 8 48 Miscellaneous and Supplemental Equipment 8 8 21

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PART 1 - Preface and Table of Contents Original Sheet 7 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont’d)

TOPIC PART SECTION SHEET

D (cont’d)

Dedicated Communications Services (cont’d) 15 - - Mileage Calculations 15 1 16 Multi-service Optical Network Ring (MON Ring) Service 15 3 130 Network Reconfiguration Service (NRS) 15 3 122 OC-n Point to Point Service 15 3 32 OC-n Dedicated Ring Service 15 3 54 ProtectPath® Service 15 3 107 Series 10000 Channels 15 5 1 Signaling Arrangements 15 5 2 Term Payment Plans 15 1 20 Defacement of Premises 2 2 24 Definition of Terms - General 2 1 1 Definition of Terms - Service Establishment and Change Charges 3 1 1 Definitions and Abbreviations 2 1 - Denial or Termination of Service 2 2 15 Deposits 2 2 19 Determination of Toll Rate Distances 9 2 1 Digit Absorbing Attendant Trunk 4 5 12 Digital Transport Services 6 7 - Digital Trunk Service (Grandfathered) 20 6 1 Digital Transport Service (DTS) Grandfathered) 20 6 4 Digital Transport Service – Enhanced (DTS-E) 6 7 1 Digital Switched Network Services (Grandfathered) 20 6 30 Direct Inward Dialing Service (DID) 6 1 1 Directory Assistance Service 11 2 - Local 11 2 1 Toll 11 2 5

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PART 1 - Preface and Table of Contents Original Sheet 9 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont'd)

TOPIC PART SECTION SHEET

F

Facilities (other than Entrance Facilities) confined to the Same Continuous Property 2 5 4 FeatureLink ServiceSM 7 5 3 Fiber Distributed Data Interface(FDDI) Service (Grandfathered) 20 15 13 FibreMAN® Service 15 4 23 Fire and Flood, Charges to Reestablish Service 3 1 24 FlexLine Service 4 5 14 Floor Space, Power Supply and Other Arrangements at Customer Premises 2 2 25 Foreign Central Office Service 4 3 1 Foreign Exchange Service 4 3 3 Foreign Type Exchange Services 4 3 1

G

General Terms and Conditions 2 - - GigaMAN® Service 15 4 1 GigaMAN® Service (84 Month) (Grandfathered) 20 15 48 Grandfathered Services 20 - - Group Alerting and Dispatching Systems 8 3 1

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PART 1 - Preface and Table of Contents Original Sheet 10 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont'd)

TOPIC PART SECTION SHEET

H Hazardous Locations, Service at 2 2 24 High Capacity Transport Service (Grandfathered) 20 15 30 High Voltage Protection (HVP) 8 8 84

I Identification of Out-Dialed (IOD) Calls Service 6 1 2 Identity of Customers 2 2 14 Individual Customer Contracts 2 2 21 Information Call Completion Service 11 3 1 Information Provider Services 8 1 - Informational Notice 2 2 31 Initial Contract Periods and Termination Charges 2 2 25 Installations, Maintenance and Repairs 2 2 23 Intercept Referral Extension Service 11 4 3 Intercom Calling (Grandfathered) 20 7 2 International Call Blocking Service 8 2 7 ISDN BRI Single B Channel Packet Service 17 3 1 ISDN Direct 17 1 1 ISDN Direct (Grandfathered) 20 17 1 ISDN Local Calling Value Plan (ILCVP) 4 2 19 ISDN Primary Rate Interface (PRI) 17 2 - ISDN Prime Service 17 2 1 ISDN Prime Service (84 Month) (Grandfathered) 20 17 5 ISDN Services 17 - -

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PART 1 - Preface and Table of Contents Original Sheet 11 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont'd)

TOPIC PART SECTION SHEET

J

Jack Nonrecurring Charges 3 1 25 Joint User Service 4 5 11

L

Liability of the Company 2 2 22 List of Rate Centers (Message Toll) 9 2 4 List of Rate Centers by Area Code (Message Toll) 9 4 1 Listing Services 12 1 1 Lobby Interphone System Common Equipment 8 8 11 Local Message Allowances and Charges 4 2 17 Local Non-Coin Messages 11 1 2 Local Service Options 4 5 - Local Usage Saver Plan 4 2 27 Lost or Damaged Equipment 2 2 25

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PART 1 - Preface and Table of Contents Original Sheet 12 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont'd)

TOPIC PART SECTION SHEET

M

Maintenance, Company Liability 2 2 23 Make Busy Arrangement 8 8 3 Measured Rate Services 4 2 13 Meet Point Billing Arrangements 2 2 37 Message Rate Services 4 2 16 Message Telecommunications Services and Rate Schedules 9 1 - General Regulations 9 1 1 Mobile Telephone Service 9 1 21 Schedule A 9 1 10 Schedule B 9 1 11 Schedule C 9 1 12 Transfer of Toll Charge Service 9 1 22 Two Point Service 9 1 6 Message Toll Service 9 1 1 Message Toll Services 9 1 - Message Waiting Indication 7 3 4 Minimum Telephone Service Standards (MTSS) Recourse Credits 2 10 1 Miscellaneous Services 8 - - Mobile Telephone Service 9 1 21 MON Services (see Dedicated Communications Services) Monthly Exchange Services 4 2 1 Moveable Premises Equipment, Charges for 3 1 25 Moves of Service 3 1 1 Multiple Call Option (Grandfathered) 20 7 1 Multi-Ring Service 7 3 1

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PART 1 - Preface and Table of Contents Original Sheet 13 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont'd)

TOPIC PART SECTION SHEET

N

National Directory Assistance Call Service 11 2 8 Network Access Lines 4 2 1 Network Interface Jack Charges 3 1 25 Network Reconfiguration Service (NRS) (see Dedicated Communications Services) Network Switch Alternate Routing (NSAR) (Grandfathered) 20 8 4 Network Wiring Charge 3 1 2 Night Transfer Arrangement, FX 4 3 8 Nonrecurring Charge Options 2 3 25 Non-Residence Rates, Application of 4 2 25

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PART 1 - Preface and Table of Contents Original Sheet 15 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont'd)

TOPIC PART SECTION SHEET

P

Packet Switched Network Service (Grandfathered) 20 6 16 Payment for Service 2 2 18 Peak/Off-Peak Plan (Grandfathered) 20 9 16 Pending Orders, Effect of Charge Increases on 2 2 21 Permissive One Service, FX 4 3 9 Point of Minimum Penetration (POMP) 3 1 1 Power Supply, Customer Responsibility 2 2 25 Premier 2/6 Communications System (Grandfathered) 20 6 45 Primary Listings 12 1 3 PrimeNumber Service (Grandfathered) 20 6 10 Privacy Manager® 7 2 10 Private Line Services (see Dedicated Communications Services) Private Listing Service 12 1 6 Promotional Service Offerings 2 8 1 ProtectPath® Service (see Dedicated Communications Services)

R

Rate Centers (Message Toll) 9 4 - Refusal to Provide Local Service 2 2 1 Registered Equipment 2 9 14 Regulations 2 2 - Remote Call Forwarding (RCF) 7 4 1

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PART 1 - Preface and Table of Contents Original Sheet 17 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont'd)

TOPIC PART SECTION SHEET

S (cont’d)

Special Governmental Services 8 5 - Special Recording Trunks 4 5 12 Special Service Arrangements 2 7 1 Special Services 2 5 1 Special Trunks and Other Facilities 4 5 12 Special Types of Construction or Facilities 2 5 5 Sponsor Priced Audiotex Service 8 1 1 Stand Alone Toll Retention Offer 9 3 12 Star Code Access to Voice Mail 7 3 10 Success 800 Service 10 2 1 Symbols Used in this Guidebook 1 1 2

T

Table of Contents 1 2 - Telecommunications Service Priority (TSP) System 8 5 1 Telephone Answering Service Equipment and Facilities 6 8 1 Telephone Numbers 8 8 4 Telephone Numbers, Customers' Right To 2 2 15 Temporary Facilities 2 5 2 Temporary Interception 11 4 2 Temporary Suspension of a Portion of a Service 2 4 1 Term Payment Plans 2 3 1 Termination Charges (General) 2 2 27 Termination Charges (Term Payment Plans) 2 3 19 Termination of Service, Denial or 2 2 15 The Basics® Package for Business (Grandfathered) 20 7 4 Thirty Day Month 2 2 18 Toll and Long Distance Availability Limits 2 2 33 Toll Restriction 8 2 3 Touch-Tone Calling Service (TTCS) 7 5 1 Transfer (Assignment) of Service 2 2 13

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PART 1 - Preface and Table of Contents Original Sheet 18 SECTION 3 - Alphabetical Subject Index

ALPHABETICAL SUBJECT INDEX (cont'd)

TOPIC PART SECTION SHEET

T (cont’d)

Transfer of Toll Charge Service 9 1 22 Transmitting Messages 2 2 24 Two Point Service 9 1 6 Two-Way Direct Inward Dialing (DID) Service with Call Transfer 6 1 2

U

Use of Customer Service 2 2 5 Use of Service 2 2 4

V

V&H Coordinates 9 2 - Value Calling Plan (Grandfathered) 20 9 6 ValueLink 9 3 1 ValueLink Extra (Grandfathered) 20 4 1 ValueLink Extra - Select (Grandfathered) 20 4 9 ValueLink Plus 9 3 3 ValueLink Premier (Grandfathered) 20 9 9 Verification and Interrupt Service, Operator Assisted Calls 11 4 1 Video Services 18 - - Voice Mail Features Package 7 3 12

W

Wide Area Telecommunications Services (WATS) 10 - - Wide Area Telecommunications Services (Grandfathered) 20 10 1

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 1 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE

A. Description

Centrex Service is a local exchange telecommunications service, provided by a telecommunications system located in a Company central office, which controls the switching of:

• Calls from the exchange network to the Centrex lines, • Calls from the Centrex lines to the exchange network, • Intercommunicating calls between Centrex lines.

Direct Inward Dialing is provided to the Centrex by line selection in the central office.

Identification of outward dialing is provided for Centrex lines by individual line identification in the central office for those inter-exchange carriers for which the Company renders billing services.

Integrated voice/data communication capability is provided for the transmission of Circuit Switched Voice and Circuit Switched Data, signals on an incoming, outgoing and intercom basis utilizing Integrated Services Digital Network (ISDN) architecture.

Centrex Service offers four types of lines:

• Basic Lines • Electronic Key Lines • ISDN Lines (Custom and National)

Centrex Service is offered only as a complete service. The network access and intercommunication portions of the Centrex station line are not provided separately.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 2 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

A. Description (cont'd)

Centrex Service is usage sensitive as well as subject to PBX trunk equivalents.

A Centrex station to PBX trunk equivalent schedule is used to determine the quantities of network access lines, PBX Terminations, and the PBX message usage packages so that the prices for Centrex exchange access are equivalent to the exchange access prices for an equal line size PBX system. TRUNK EQUIVALENCY SCHEDULE Centrex Station Lines In Use PBX Trunk Equivalents

2 - 19 2 20 - 28 3 29 - 38 4 39 - 47 5 48 - 57 6 58 - 66 7 67 - 76 8 77 - 85 9 86 - 95 10 96 - 104 11 105 - 114 12 115 - 123 13 124 - 132 14 133 - 142 15 143 - 151 16 152 - 161 17 162 - 170 18 171 - 180 19 181 - 189 20 190 - 199 21 200 - 208 22 209 - 218 23 219 - 227 24 228 - 236 25 237 - 246 26 247 - 255 27 256 - 265 28 266 - 274 29 275 - 284 30 285 - 293 31

Each additional 12 lines or fraction thereof requires one additional trunk.

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PART 5 - Centrex / Plexar Services Original Sheet 3 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

A. Description (cont'd)

Retail vs. Retail/Resale Application (Terminology)

Centrex Service is available for the provision of local exchange service directly to the entity using such service to place and receive calls (retail application). Centrex Service is also available to an entity for resale, at retail prices, to its customers (retail/resale application).

In the retail application, the terms customer, subscriber, user, station user, group, group member, account, agent, supervisor or attendant position shall be understood to mean the entity which requested and agrees to pay for Centrex Service or its employees, agents and affiliates.

In the retail/resale application, the terms customer or subscriber shall be understood to mean:

The “Reseller” when the context concerns: ordering service (or, as appropriate, blocking service) for resale to its customers; entering into and terminating payment plans for resold service; requesting repair of resold service, including authorization for the dispatch of service technicians to the Reseller’s customer’s premises as well as performance of any premises work; and billing responsibility for the provision of Centrex Service ordered by Reseller, and the use, activation or premature termination of service by Reseller’s customers; or

The “Reseller’s customer” when the context concerns: the service location (premises); the configuration and sizing of the telecommunications system, network, or service resold; and the manner in which the resold service, including any aspects or capabilities of the service, are used, activated, or accessed. Reseller’s customer is also the equivalent term of any of the following or similar terms: user, station user, group, group member, account, agent, supervisor or attendant position.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 4 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

B. Definitions

Addition Provision of supplementary service to a customer's installed system up to the capacity of the system.

Downgrade Enumerated changes to an installed system generally resulting in a decrease in capacity, capability and/or lower monthly charge.

Line Category The number of lines the customer has selected as the contract commitment.

Payment Plan A period of time selected by the customer from among those currently offered by the Company, over which the customer agrees to pay a specified price for a product/service.

Removal Deletion of equipment or service from a customer’s installed system.

C. Terms and Conditions

1. Provision of Service

Centrex Service is provided from switching equipment located on the Company premises and is offered for 2 or more lines subject to the availability of facilities. Variations in the switching and control equipment used may cause differences in the operations or availability of certain features. Centrex Service is provided at the option of the Company and is furnished subject to central office switching capacity and the availability of outside plant facilities. Centrex Service is limited to a minimum of 2 lines. Centrex Service requires Network Access (See Other Applicable Charges) except with OmniPresence applications. OPTI-Centrex Basic Lines are provisioned via a Company 1.544 Mbps or higher speed facility with multiplexing.

Each OPTI-Centrex Basic line requires one channel on a Company transport facility plus appropriate multiplexing facilities.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 5 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

C. Terms and Conditions (cont'd)

2. Intercept of Calls to Unassigned Station Line Numbers

Incoming and Intra-group calls to unassigned numbers are intercepted by standard recorded announcement. Customized recorded intercept messages may be provided where facilities permit at additional charges.

3. Suspension of Service

Suspension of service is not offered for Centrex Service.

4. Centrex Service Guarantee

Centrex Service Guarantee enables customers to install a Centrex System and if, during or up to 90 days after the initial service is installed, the customer decides not to retain the Centrex service, the System Charge and the nonrecurring charge for installed Centrex and/or Electronic Key lines will be credited to the customer’s account provided that:

• The customer will be responsible for any nonrecurring charges associated with the installation of any new service (Exchange Access lines), other than Centrex service.

• A customer who requests termination of the Centrex service before expiration of the initial 90 days may have it's prior Company service reconnected without incurring any nonrecurring charges, provided the identical service (Exchange Access Lines) is being reconnected. Any nonrecurring charges attributable to changes from the customer’s prior service will be paid by the customer.

The Centrex Service Guarantee shall not apply to Centrex Systems which include the following optional features; however, a customer selecting Centrex service may add the following features after the expiration of the initial 90 day period and upon payment of any applicable nonrecurring charges:

• Centrex Message Signal Interface (CMSI) • ISDN Centrex (Custom or National)

Customers selecting the Centrex Service Guarantee may make changes to their Centrex service (station additions, feature changes and additions) subject to the above sub-paragraph.

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 6 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

C. Terms and Conditions (cont'd)

4. Centrex Service Guarantee (cont’d)

Customers must have a signed confirmation of order and select a 36, 60 or 84 month payment plan. Centrex Service Guarantee is not available for service subscribed to on a month-to- month payment option, temporary service or promotional events. The 90 day trial period will be considered as the first 90 days of the contract.

Customers must have a signed confirmation of order and select a 36, 60 or 84 month payment plan. Centrex Service Guarantee is not available for service subscribed to on a month-to- month payment option, temporary service or promotional events. The 90 day trial period will be considered as the first 90 days of the contract.

Prices, charges, terms and conditions specified elsewhere in the offering for Centrex service shall apply.

5. Transmission Specifications

Basic Line Standard Transmission

The standard transmission specification for basic lines consists of: dial pulse signaling or Dual Tone Multi-Frequency (DTMF) signaling - approximate bandwidth of 300 to 3,000 Hz, loss of 0 to 8.5 dbm at 1004 Hz.

Loop Start Signaling

Basic lines and Electronic Key lines are provided on a single two-wire facility with loop start signaling.

Electronic Key Line Standard Transmission (Non-ISDN)

Electronic Key Lines are provided on a non-loaded loop for access by preprogrammed push button features on compatible Customer Provided Equipment (CPE). The distance limitations from the Company's switching equipment is approximately 2.5 miles. If a customer’s premises does not meet transmission requirements in the Technical Reference, Distance Extension will apply in addition to Centrex service charges.

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PART 5 - Centrex / Plexar Services Original Sheet 7 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

C. Terms and Conditions (cont'd)

5. Transmission Specifications (cont'd)

ISDN Line (Custom and National) Standard Transmission

ISDN lines (Custom and National) are provided on a non-loaded loop for access by preprogrammed push button features on compatible Customer Provided Equipment (CPE). ISDN lines are configured as an ISDN Basic Rate Interface with a capacity of two 64 Kbps “B” channels and one 16 Kbps “D” channel (2B+D).

Integrated Services Digital Network (ISDN) architecture, as recommended in the 1984 recommendation of the International Telegraph and Telephone Consultative Committee (CCITT), provides integrated voice/data communication capability for transmission of Circuit Switched Voice (CSV) and Circuit Switched Data (CSD) signals on an incoming, outgoing and intercommunicating basis.

Valid configurations of services are listed in the Company’s ISDN Interface Specifications. If a customer’s premises does not meet transmission requirements in the Technical Reference, Distance Extension will apply in addition to Centrex service charges.

• ISDN National lines offer features and capabilities that are more standardized with all types of central office switches.

• ISDN Custom lines offer some features which are not available on ISDN National lines and require the use of proprietary Customer Provided Equipment.

OPTI-Centrex Lines

OPTI (Optimally Provisioned Transport Integration) -Centrex lines provide Centrex delivered to a customer premises utilizing a Company provided 1.544 Mbps or higher facility with multiplexing. Centrex Basic line specifications found elsewhere in this guidebook apply. Multiplexing may affect the data transmission characteristics and some features of voice lines.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 8 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

C. Terms and Conditions (cont'd)

6. Local Service Area

The exchange or zone of the serving wire center for Centrex Service determines the local service area for all station lines. (See Reference Section)

7. Business Classes of Service

See Other Applicable Charges - Usage

8. Mileage Charges

Where facilities permit, Centrex lines and Electronic Key lines may be provided to a customer’s location outside the serving CO area. In such cases, in addition to the prices for the specific Centrex line, appropriate mileage charges apply. (See Reference Section)

When the customer’s premises and the serving central office providing ISDN Centrex service are located in different Service Areas, Base Rate charges will apply. Customers provided this service arrangement will require three Interexchange Mileage component charges and six Channel Mileage Termination charges for each ISDN Centrex line they purchase. (See Reference Section)

9. Cancellation of Service

In the event of a customer-initiated cancellation of service, equipment and/or facilities before completion, or after installation is completed, but prior to service being established, the loss of equipment and facilities in the process of building or being installed, cost of installation labor, cost of removal and other expenses will apply. In addition, Service Connection Charges may also be applicable.

10. Resale

See Reference Section.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 9 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

C. Terms and Conditions (cont'd)

11. Directory Listings

The Company will furnish without charge one primary directory listing for each Centrex System in addition to a sub-listing indicating that stations can be dialed directly if the number is known.

Individual business listings of telephone numbers by department, title, or individual name may be indented under the main listing or listed separately at the charges specified for Business Additional Listings. (See Reference Section)

12. CCS Limitations

The intercom prices for each Centrex system are based on a 1-1/2 or less CCS (Centum Call Second) load.

13. Intercom Calling

Centrex intercom calling is only allowed between station users internal to the end user customer or station users of an affiliate company of the end user customer.

14. Direct Interconnection

Direct interconnect of Centrex systems belonging to unaffiliated end user customers is prohibited.

15. ISDN Centrex - Multiple Devices

Multiple circuit switched "B" channel devices are allowed, where facilities permit, on an ISDN Centrex line. The Company supports up to four (4) devices to share the "B" channels, per ISDN Centrex line.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 10 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features

1. Feature Availability N/A - Not Applicable Std.-Standard Opt.-Optional

Voice Basic Electronic Key ISDN Add On Modules N/A Opt. Opt. Analog Line Pickups N/A Std. N/A Automatic Callback Opt. Opt. Opt. Automatic Dial N/A Std. Std. Automatic Line Preselect N/A Std. Std. Blind Transfer with Recall Identification N/A Std. N/A Call Camp-On Opt. Opt. Opt. Call Camp-On Selective Opt. Opt. Opt. Call Diverting Std. Std. Std. Call Forward of Call Waiting Calls Std. Std. N/A Call Forwarding - Busy Std. Std. Std. Call Forwarding - Don’t Answer Std. Std. Std. Call Forwarding - Variable Std. Std. Std. Call Forwarding per Key N/A Std. Std. Call Forwarding Over Private Facilities Opt. Opt. Opt. Call Hold Std. Std. Std. Call Park Opt. Opt. Opt. Call Pickup Std. Std. Std. Call Request N/A Std. Std. Call Request with Queue Opt. Std. Std. Call Transfer - All Std. Std. Std. Call Transfer (Inter-system) - Deluxe Std. Std. Std. Call Waiting/Cancel Call Waiting Std. Std. N/A Called Number Display N/A Std. Std. Caller ID Opt. Opt. Std. Caller ID Intercom N/A Std. Std. Caller ID with Name Opt. Opt. Std. Calling Name Display on Intercom N/A Opt. Opt. Calling Reason Display N/A Std. Std. CLASS Automatic Callback Opt. Opt. Opt. CLASS Call Screening Opt. Opt. Opt. CLASS Repeat Dialing Opt. Opt. Opt. CLASS Visual Message Waiting Indicator Opt. N/A N/A Conference Calling, 3 Way Std. Std. Std. Consultation Hold Std. Std. Std.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 11 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

1. Feature Availability (cont'd)

N/A - Not Applicable Std.-Standard Opt.-Optional

Electronic Voice Basic Key ISDN

Direct Connect Originating Opt. Opt. Opt. Custom Calling Name on Centrex Opt. Opt. N/A Direct Connect Originating with Delay Opt. Opt. Opt. Direct Inward Dialing (DID) Std. Std. Std. Direct Outward Dialing (DOD) Std. Std. Std. Direct Station Selection/Busy Lamp Field with Fast Transfer N/A Opt. Opt. Directed Call Park Opt. Opt. Opt. Directed Call Pickup Opt. Opt. Opt. Directory Number Hunt with Call Waiting and Preferential Hunt N/A Std. N/A Display Capability N/A Std. Std. Distance Extension N/A Opt. Opt. Distinctive Ringing and Call Waiting Tone Std. Std. Std. End to End Signaling Std. Std. Std. Equal Access for Inter LATA Calling Std. Std. Std. Executive Busy Override N/A Std. Std. Executive Busy Override - Exempt N/A Std. Std. Executive Display Communications N/A Opt. N/A Feature Buttons N/A Std Std. Ground Start Line Opt. N/A N/A Group Intercom N/A Std. Std. Hunting Arrangements Std. Std. Std. Increase Shared Directory Number (DN) Group Size N/A N/A Std. Intercom Calling Std. Std. Std. Last Number Redial Opt. Std. Std. Leave Message Activation N/A Std. Std. Listen On Hold N/A Std. Std. Make Busy Access Code Opt. Opt. Opt. Key Opt. Opt. Opt. Make Set Busy N/A Std. Std. Make Set Busy except on Group Intercom N/A Std. N/A Message Retrieval Display N/A Std. Std. Message Waiting Activation Control N/A Std. Std. Message Waiting Indication Lamp Opt. N/A N/A Message Waiting Indication - Visual N/A Std. Std. Message Waiting Indicator - Audible Std. Std. Std.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 12 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

1. Feature Availability (cont'd)

N/A - Not Applicable Std.-Standard Opt.-Optional

Electronic Voice Basic Key ISDN

Multiple Appearance Directory Number (MADN) N/A Opt. N/A Multiple Call Arrangement (MCA) N/A Std. Std. Single Call Arrangement (SCA) Std. Std. N/A Night Answer N/A Std. Std. On Hook Dialing Opt. Opt. Premium Feature Package Automatic Callback Call Camp-On Call Camp-on Selective Call Park Directed Call Park Directed Call Pickup Pickup Held Conference Call from Shared Directory Number (DN) Call Appearance N/A N/A Std. Query Busy Station N/A Opt. Opt. Repeat Alert N/A Std. Std. Ring Again Idle Set N/A Std. Std. Ringing Options for MADN N/A Std. Std. Secondary Directory Telephone Number N/A Opt. Opt. Secondary MADN Call Forwarding N/A Std. Std. Set Inspect N/A Std. Std. Shared Directory Number (DN) Bridging with Conference Calls N/A N/A Std. Short Hunt N/A Std. Std. Single Line Extension Opt. N/A N/A Simultaneous Ring One Number Opt. Opt. Opt. Speed Calling-Expanded Number Group Opt. Opt. N/A Speed Calling - Long Opt. Opt. Opt. Speed Calling - Short Std. Std. Std. Stop Hunt Access Code N/A Std. Std. Key Opt. N/A N/A Terminal Management N/A N/A Std. Time and Date Display N/A Std. Std. Touch-Tone Std. Std. Std. Transfer Calls to Restricted Station Std. Std. N/A Usage Billing by Line Number Std. Std. Std.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 13 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

1. Feature Availability (cont'd)

N/A - Not Applicable Std.-Standard Opt.-Optional

Classroom Line/1/

Classroom Lines are Basic Lines which allow out dialing only to 911 Universal Emergency Telephone Number Service and have the following feature availability:

Caller ID Opt. Intercom Calling Std. Touch-Tone Std. Direct Outward Dialing-restricted to 911 Universal Emergency Telephone Number Service Std. Direct Inward Dialing Std.

OPTI-Centrex

OPTI-Centrex Basic lines provide the same feature availability as Voice Basic lines listed elsewhere in this section with the following exceptions. OPTI-Centrex Basic

Attendant Consoles N/A Call Waiting Lamp Interface N/A Ground Start Line /2/ Message Waiting Indication-Visual N/A Music on Hold Interface N/A Paging Interface N/A High Speed Data Service N/A

/1/ Classroom Lines are available only to Kindergarten through 12th Grade schools. "Schools" as used herein is limited to those institutions which are chartered by the State Board of Education pursuant to Section 3301.16, Revised Code. /2/ Ground Start capability is not available in DMS10 switches for Opti-Centrex lines.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 14 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

1. Feature Availability (cont'd)

N/A - Not Applicable Std.-Standard Opt.-Optional

ISDN Services

Alternate Circuit Switched Voice/Circuit Switched Data Service Opt. Circuit Switched Voice Service Opt.

ISDN Circuit Switched Data

Alternate Access Opt. Calling Display on Intercom Std. Call Diverting Std. Far End Disconnect Supervision Std. Hunt Group for Shared Data Access Std. Intercom Calling Std. Speed Calling Short Std. Queuing Std.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 16 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

1. Feature Availability (cont'd)

Opt.-Optional

System (cont'd)

Private Facility Terminations Opt. Line Side Access Trunk Side Access Queue Slots Opt. Special Intercept Service Opt. Split Service/1/ Opt. Station Message Detail Recording - Premises (SMDR-P)/2/ Opt. Supplemental Three Digit Dialing Opt. Trunk Verification from Designated Station Opt. Uniform Call Distribution (UCD) Opt. Virtual Routing Opt.

Attendant Console Features

Access to Paging, Code Calling, etc. Std. Attendant Call Detail Entry Opt. Attendant Call Park Std. Attendant Camp On Std. Attendant Conference Capability Std. Attendant Conference (30 Port) Opt. Attendant Console Screen Management Std. Attendant Control of Call Forward Busy Line and Don’t Answer Std. Attendant Position Busy Std. Attendant Recall from Satellite Std. Attendant Recorded Announcement Std. Attendant to UCD Transfer Std. Attendant Transfer Std. Autodial Std. Automatic Recall Std. Busy Verification of Station/Trunk Std.

/1/ Effective August 31, 1996, this feature is no longer available to new Centrex Service customers or to existing customers expanding their current systems. /2/ Effective December 18, 1998, this feature is no longer available to new Centrex Service customers or to existing customers expanding their current systems.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 17 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

1. Feature Availability (cont'd)

STD - Standard Opt.-Optional

Attendant Console Features (cont'd)

Call Hold Std. Call Hold with Recall Std. Call Park Recall Timer Std. Call Selection Std. Call Splitting Std. Call Through Tests Std. Console Display Capability Std. Console Test Std. Control of Trunk Group Access Std. Control of Virtual Facilities Groups Std. Delayed Operations Std. Direct Station Selection and Busy Lamp Field Opt. Direct Trunk Group Selection Std. End to End Signaling Std. Emergency Access to Attendant Std. Emergency Override Std. Extended Calls to Busy/No Answer Std. Foreign Exchange (FX) Termination Std. Flexible Console Alerting Std. Incoming Call Identification Std. Information/Display Calls in Queue Std. Interposition Calling Std. Locked Loop Operation Std. Lockout Std. Message Waiting Control Std. Multi Position Hunt (MPH) Opt. Multiple Console Operation Std. Multiple Listed Directory Numbers Std. Name Display for Attendant Console Opt. Night Service Std. Operational Measurements Opt. Power Failure Transfer Std. Queuing with Call Waiting Indication Std. Release upon Completion of Dialing Std. Secrecy Std. Serial Calling Std. Speed Calling Std.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 18 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

1. Feature Availability (cont'd)

STD - Standard Opt.-Optional

Attendant Console Features (cont'd)

Speed Calling Std. Straightforward Outward Completion Std. Supervisory Console Std. Switched Loop Operation Std. Through Dialing Std. Time of Day and Date Std. Timed Reminder Std. Toll Diversion to Attendant Std. Trunk Busy Identification Std. Trunk Group Busy/Access Control Key Std. Trunk Group Identification/Indicators Std. UCD from Queue Std. Verification of Authorization Codes Std. Wild Card Key Std.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 19 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features

Add On Modules Provides the capability to connect 10, 18, 20, 22 or 36 button Add-On Modules.

Analog Line Pickups Allows analog lines to have a line appearance on properly equipped Customer Provided Equipment (CPE).

Automatic Callback Permits a station user who places an intrasystem call to a busy Centrex number to be automatically connected to that line when both the called and calling station lines are available.

Automatic Dial Provides for automatic dialing of a single telephone number via a specific button on the CPE telephone.

For Centrex users with properly equipped Customer Provided Equipment (CPE) having display capabilities, this feature displays the number currently programmed for Automatic Dial.

For ISDN this functionality is provided by properly equipped CPE.

Automatic Line Preselect Automatically connects a station user to a preselected line when the handset is lifted. Preselect can be configured to select a ringing line, an idle line, a primary line, or no line.

Blind Transfer with Recall Identification Allows a station user to transfer a call to another party without waiting for that party to answer. If the other party does not answer the transferred call in a specific time-out period, the station from which the call was transferred is recalled. On sets with the optional display that have been assigned the text-message option, an alphanumeric message is displayed to help identify Blind Transfer recalls.

Call Camp-On Provides a station user the ability to direct an audible tone signal to any other station line, if that line is in use.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 20 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Call Camp-On Selective Permits a station user to originate, by dialing a code, an audible tone to a called busy station line in the same Centrex system.

Call Diverting Outgoing calls may be screened so that completion of calls to preselected areas is denied. Each arrangement is a predefined standard. The following arrangements are standard: intercom only (fully restricted), intercom and local calls (semi-restricted), and intercom, local and toll calls (unrestricted).

Denied Origination prohibits call origination from designated Centrex stations.

Denied Termination prohibits call completion to designated Centrex stations.

Call Forward of Call Waiting Calls Allows station users that have Call Forwarding and Call Waiting assigned to their lines to forward Call Waiting calls that are not answered within a set period of time automatically to a predetermined destination.

Call Forwarding-Busy Allows incoming calls to a busy station to be routed to a preselected Centrex station line, attendant, or line outside the system.

Incoming Call Only allows only incoming calls from outside of the Centrex group to be forwarded.

Internal/External Split allows separate, forwarded-to directory numbers to be assigned for calls that originated internally or externally to the customer group.

Station Activation allows a customer to activate/deactivate the feature as well as program the forward-to station from the set by using a dial access code.

To External Number allows calls to be forwarded to a number outside of the Centrex group.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 21 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Call Forwarding-Don’t Answer Allows incoming calls to automatically route to a preselected Centrex station line, attendant or to a line outside the Centrex group when the called station is not answered after a preset number of rings.

Incoming Call Only allows only incoming calls from outside of the Centrex group to be forwarded.

Ring Cycles defines a predetermined number of rings before the Call Forward-Don't Answer feature is invoked on a per line or a per system basis.

Internal/External Split allows separate, forwarded-to directory numbers to be assigned for calls that originated internally or externally to the customer group.

Forwarded Number Busy Interaction Enhancement on a customer group basis provides additional treatment options for incoming calls that are forwarded to the forward-to destination when busy. This enhancement does not apply for ISDN. The available options are:

• Treat the call according to any features assigned to the forward-to destination (current functionality); or

• Do not forward the call, but continue to ring the base station until answered or abandoned; or

• Do not forward the call, but provide an intercept announcement.

Station Activation allows a customer to activate/deactivate the feature as well as program the forward-to station from the set by using a dial access code.

To External Number allows calls to be forwarded to a number outside of the Centrex group.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 22 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Call Forwarding-Variable Permits a station user to activate routing of incoming calls to a preselected station line, attendant, or to a line outside of the system.

Reminder Ring/IntraGroup provides a ring splash when an intragroup call is forwarded and the base station is idle.

To IntraGroup Directory Numbers (DNs) Only allows calls to be forwarded to intragroup directory numbers only.

Incoming Calls Only allows only incoming calls outside of the business group to be forwarded

Call Forwarding per Key Allows an Electronic Key Line user to enable each line appearance key assigned this feature to call forward to a different number or destination. For Centrex users using properly equipped Customer Provided Equipment with display capabilities, this feature displays the number currently programmed for the Call Forwarding feature.

Call Forwarding Over Private Facilities Enables a station user to establish automatic forwarding of incoming calls to a specific private facility access group.

Call Hold Allows a station user to hold a call in progress by dialing an access code, place another call and alternate between the two calls with privacy.

With ISDN CPE, it allows the station user to hold an active call in progress by pressing a button to place or answer another call and alternate between the two calls with privacy.

Call Park Provides the station user the ability to park a call against the station number. The parked call may be retrieved from any station in the Centrex group by dialing an access code and the station number parked.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 23 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Call Pickup Allows a station user to answer calls directed to another station line within the same pickup group by dialing an access code. Where available, incoming calls will be answered on a first in, first out basis (longest call answered first). ISDN station users may also invoke call pickup via a feature button with properly equipped CPE.

Call Request Allows a station user to activate a call request to an idle or busy station. Additionally, provides the ability of a called station to activate a return call by using a feature button, when the station has received a call request.

Call Request with Queue Allows a station user to activate a call request, by dialing an access code, to another station user that may be busy or idle. Additionally, this feature provides the ability of the called station user to return a call request, by dialing an access code, to the station user that initiated the call request. This feature requires that both the Centrex line that initiates the call request and the Centrex line that receives the call request be equipped with this feature.

Call Transfer-All Allows incoming, outgoing and intercom calls to be transferred to other Centrex stations.

Call Transfer (Inter-system)-Deluxe Incoming, outgoing and intercom calls may be transferred to other Centrex station numbers or other lines outside the Centrex group.

Call Waiting/Cancel Call Waiting Provides station users with an audible tone to indicate that an incoming call is waiting. This feature can be activated and deactivated with the Cancel Call Waiting capability.

Called Number Display Capability to display the called number with the proper Customer Provided Equipment.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 24 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Caller ID Incoming numbers from outside the Centrex system are displayed on compatible Customer Provided Equipment. In addition the date and time of the incoming call is displayed.

Free per Call Blocking Service is available for customers who are served from appropriately equipped central offices. Centrex Service customers may prevent delivery of their telephone numbers to Caller ID subscribers on a per call basis by activating the appropriate Caller ID activation code prior to placing the call.

Caller ID Intercom The caller’s number, if not blocked, is displayed on compatible Customer Provided Equipment when an incoming intercom call is received.

Caller ID with Name Provides the name associated with the calling party number, or an indication of anonymity or unavailability in lieu of the name, to the called party. Caller ID with Name is an optional feature to Caller ID. Caller ID with Name is not provided without Caller ID.

Calling Name Display on Intercom Provides delivery of the calling name on calls from other station users within the Centrex system to station users with Electronic Key Line sets.

Calling Reason Display In addition to a display of both the caller’s number and the number being called, this also indicates the reason a call has been forwarded.

Enhancement provides more information on redirected calls.

CLASS Automatic Callback (See Part 7, Section 2)

CLASS Call Screening (See Part 7, Section 2)

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 25 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

CLASS Repeat Dialing (See Part 7, Section 2)

CLASS Visual Message Waiting Indicator Provides a visual indication when messages have been left for subscribers who also subscribe to compatible voice messaging systems. For subscribers with display sets or adjuncts, the date and time of the messages if the messaging service supplies this information are also displayed in addition to lighting the visual message indicator lamp.

Conference Calling, 3-Way Allows a station user to add a third party to an existing call.

Consultation Hold Allows a station user to hold a call in progress (incoming or outgoing) and originate another call with privacy.

Custom Calling Name on Centrex Provides internal (employee) and external (Centrex customer of record listed name) calling name display on lines subscribed to the feature. The customer must also subscribe to Caller ID.

The Centrex customer must establish and maintain a directory of all names and lines associated with the Centrex by accessing a Company website. The Company shall not be responsible for the accuracy of the customer directory or any name list that the customer uses for the Custom Calling Name service.

Each Centrex customer of record shall be limited to a maximum of three proprietary website user IDs, and the customer is responsible for protecting the security of the user ID numbers. The Company shall not be liable to the customer or any third party (including but not limited to any employee of the customer) for improper or incorrect designations when such designations are established with the customer’s user ID.

Direct Connect Originating Permits a station line to automatically dial a predetermined telephone number when the calling station line goes off-hook. Direct Connect Originating with Delay Permits a station line to automatically dial a predetermined telephone number when the calling station line goes off-hook. The customer can define the time delay, normally 1-20 seconds, after which the predetermined telephone number is dialed when the station user goes off-hook.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 26 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Direct Inward Dialing (DID) Calls from outside the Centrex group may be dialed directly to each Centrex number.

Direct Outward Dialing (DOD) Calls may be placed outside of the Centrex group without the aid of a system attendant.

Direct Station Selection/Busy Lamp Field with Fast Transfer This provides a set of related features to allow appropriate Customer Premises Equipment to perform attendant console like functions.

Direct Station Selection provides properly equipped Customer Provided Equipment to monitor, via a busy lamp field, status of directory numbers that appear in the Electronic Key line group. It will also provide direct dialing to a monitored station by means of the feature key.

Camp-On allows the user to extend a call to a busy station. The call is held until the called party is free. If the called party does not answer the waiting call, then the station that extended that call is automatically recalled by the calling party.

Fast Transfer allows the transfer of calls without having to conference the called party beforehand.

Directed Call Park Provides the station user with the ability to park a call against another station number. The parked call may be retrieved from any station in the Centrex group by dialing an access code and the station number.

Directed Call Pickup Allows a station user to answer calls directed at another station number within the Centrex group without regard to pick-up groups. This feature may be provided with barge-in, if requested.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 27 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Directory Number Hunt with Call Waiting and Preferential Hunt Allows a line with Call Waiting to be a member of a directory number hunt group and allows a preferential hunt list for each member of the group.

Display Capability For Centrex users with properly equipped Customer Provided Equipment having display capabilities, this feature also displays user-entered or incoming call information during the use of other Centrex features.

Distance Extension Extends the effective working range beyond the normal working range. This arrangement will allow for the proper operation beyond these limitations within the same serving central office.

Distinctive Ringing and Call Waiting Tone Provides different ringing cadence for incoming calls from within the Centrex system verses outside the system. This feature also provides distinctive call waiting tones for calls coming from within the system verses outside the system for lines equipped with the Call Waiting capability.

End to End Signaling Allows a station user, while in the talking state, to send Dual Tone Multi-Frequency (DTMF) digits to the other end by using a dial pad.

Equal Access for Inter LATA Calling Allows each station line to use a predetermined Inter-Exchange Carrier without dialing any special codes. Override to an alternate carrier can be accomplished by dialing an appropriate Inter-Exchange Carrier code.

Executive Busy Override Allows a station user to gain access to a busy station.

Executive Busy Override-Exempt Denies access to a station user invoking Executive Busy Override.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 28 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Executive Display Communications Allows a station user to leave and retrieve messages at an Electronic Key line set with display.

Feature Buttons Allows a user to activate features or access trunk groups via buttons on a customer provided set.

Ground Start Line Permits a Centrex Service line, equipped with ground start signaling, to be terminated in a PBX System, Automatic Call Distributor or Multifunction System (Hybrid), i.e., system that can be arranged through the common equipment to satisfy both the definition of Dial Private Branch Exchange Service and Button Telephone Service.

Group Intercom Centrex users may be members of an intercom group of up to 99 members. Each member is assigned a unique 2 digit number. This intercom is separate and distinct from station to station Intercom Calling.

Additional intercom capabilities offered, where available, are:

Individual Page allows a Group Intercom member to page another group member using the built-in speaker on a properly equipped set. This capability is not applicable for ISDN.

All Calls allows a Group Intercom member to simultaneously page up to 29 predefined members of the same Group Intercom group, using the built-in speaker on a properly equipped set. This capability is not applicable for ISDN.

Intercom Key allows a user to directly terminate on a predesignated set by pressing the intercom key.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 29 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Hunting Arrangements Incoming calls to a busy Centrex line are redirected to a predetermined number(s) to search for an idle line on which to complete the call. If no idle number is found, a busy tone is provided. These types are available:

Circular Hunt permits a complete hunt over all of the station lines in a particular Multi Line Hunt Group (MLHG). Hunting starts with the dialed number and continues to the last terminal prior to the dialed number in the MLHG. Circular Hunt is only provided with Uniform Call Distribution, Preferential Hunt or Multiple Position Hunt (MPH).

Series or Serial Hunt allows a limited number of Centrex lines to be programmed in either a sequential (consecutively numbered) or non-sequential (non consecutively numbered) order for hunting purposes. Series hunting is done through the ordered list until an idle line is encountered or the end of the list is reached. Call handling line features can be added to the last directory number in the series to increase call completion probability. Series Completion redirects a call only once to any given line.

Enhancement redirects a call from a busy directory number to another directory number giving greater flexibility by providing circular Call Forward, Busy type chaining.

Distributed Line Hunting starts the hunting at the first idle line after the previous hunt and continues until the starting point is reached.

Multi Line Hunt Group (MLHG) is a group of lines with common terminating (incoming call) features that are grouped together to share translation data. Hunting is provided by a common program (shared translations) for the group of lines. Each line is identified by a multi-line terminal number, not a Centrex number.

Enhancement allows the assignment of Multiple Pilot Directory Numbers to a MLHG. Hunting can therefore begin at different points in the group depending on the number dialed.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 30 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Hunting Arrangements (cont'd)

Distributed Line Hunting starts the hunting at the first idle line after the previous hunt and continues until the starting point is reached.

Multi Line Hunt Group (MLHG) is a group of lines with common terminating (incoming call) features that are grouped together to share translation data. Hunting is provided by a common program (shared translations) for the group of lines. Each line is identified by a multi-line terminal number, not a Centrex number.

Enhancement allows the assignment of Multiple Pilot Directory Numbers to a MLHG. Hunting can therefore begin at different points in the group depending on the number dialed.

Non-Hunt Telephone Number in an MLHG can contain station lines which have associated non- hunt directory numbers. If the station line is busy on a call, another call to the non-hunt number will receive busy treatment. These non-hunt numbers are not in the MLHG and do not have access to the MLHG or MPH features.

Preferential Hunt permits a pre-hunt over a preferential list of station lines before hunting the entire MLHG. Each station can be associated with a particular preferential list within a MLHG.

Secretarial allows more than one Centrex line to hunt to the same line in a linear pattern.

Uniform Call Distribution (UCD) without queuing is furnished only on station lines equipped for Circle Hunt. This hunting feature provides equal distribution of incoming calls in a prearranged group. Calls in excess of the number of lines in the UCD group will not be held in queue and will receive a busy tone. A make busy arrangement is required to busy out all lines in a group or single lines in a UCD group by operating a key.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 31 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Intercom Calling Centrex users may dial each other's telephone number using 3, 4 or 5 digits without the aid of the system attendant.

Last Number Redial Allows a designation of a CPE station button to initiate redial of the last number called.

Last Number Redialed associated with Set re-dials last number from business set regardless of which key the call was made from.

Leave Message Activation Capability for a station user to activate, via a button, an audible or visual message indication at other locations. The receiving station controls the deactivation of the message indication upon retrieval of the message. (Requires Message System Service CPE)

Listen on Hold Allows a station user to place a called party on hold and listen through the speaker on a properly equipped set.

Make Busy This feature may be assigned to any hunt line, directory number, multi-line hunt line, or distributed hunt line and is activated by one of the following options:

Access Code The feature is activated when the customer dials an access code.

Key By using a customer provided external key, the line is made permanently busy when the key is activated, and is normal when the key is not activated.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 32 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Make Set Busy Allows a designation of a CPE station button to busy out all lines terminating on the telephone set.

Make Set Busy except on Group Intercom Allows an Electronic Key Line station to continue to receive group intercom calls when the set is put into a make busy condition.

Message Retrieval Display Provides the capability of a station to directly retrieve messages from their display via button activation and cancel the message waiting indication. (Requires Message System Service CPE)

Message Waiting Activation Control Provides the capability of a predesignated station to activate audible or visual message waiting indications at other stations. The sending station controls both the activation and deactivation of the message waiting indication.

Message Waiting Indication Lamp Provides the capability of a visual message waiting lamp that indicates a message is waiting at the message center.

Message Waiting Indication-Visual Provides the capability of a visual message waiting indication key that indicates a message is waiting at the message center.

A directory number can have one to four message waiting lamps assigned on a set.

Message Waiting Indicator-Audible Provides an audible tone signal, e.g., stutter dial tone, on a Centrex line to indicate a message waiting condition.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 33 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Multiple Appearance Directory Number(MADN)

- Multiple Call Arrangement (MCA) Provides capability to terminate duplicate telephone numbers on Electronic Key Line type Sets or Single Line Sets.

Multiple Call Arrangement (MCA) allows more than one set in the MADN group to be active on the MADN simultaneously. The number of simultaneous calls is restricted only by the number of members in the MADN group.

- Single Call Arrangement (SCA) Provides capability to terminate duplicate telephone numbers on Electronic Key Line type Sets or Single Line Sets. These numbers are configured in a Single Call Arrangement (SCA).

Single Call Arrangement (SCA) allows only one set to be active (either originating or terminating) on the MADN at any given time.

Includes incoming call disconnect to automatically release the bridge for other MADN Directory Numbers.

Bridging allows more than one set in a MADN group to be active on a line simultaneously.

Conference Interaction allows a conference call to be either answered or established by one party, placed on hold, or picked up by another party.

Conference w/3-Way Calling enables a MADN Single Call Arrangement (SCA) with bridging options to establish a three-way call during the bridge state.

Privacy allows a user to exclude another user with the appearance of the same line from entering an existing conversation.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 34 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Night Answer Allows an incoming night call to be indicated by the ringing of a customer provided night bell or a predesignated Centrex line. Calls may be answered at any station other than fully restricted stations by dialing a special code.

Fixed allows calls that are normally routed to the attendant during the day to be routed to predesignated locations at night. The predesignated route can be an individual directory number or a hunt group.

Flexible allows the attendant to program the Night Service routes for each Incoming Call Identification (ICI) classification assigned to the customer group.

Trunk Answer From Any Station allows any station in the customer group to answer an incoming call by dialing a code. The code is dialed when the Trunk Answer From Any Station alert sounds.

On Hook Dialing A capability available on properly equipped Customer Provided Equipment which allows the user to originate calls without lifting the handset.

Query Busy Station Allows up to 128 Electronic Key stations to query the busy/idle status of one designated station either Electronic Key line or Centrex within the group. The feature supports up to eight simultaneous requests to monitor the station for idle status display.

Repeat Alert A station can be designated to receive additional alert tones when a call terminates on a Directory Number (DN), MADN, or Group Intercom Key and while the station is active on another call.

Ring Again Idle Set Prevents a busy set from receiving call back (ring again) while active on another call. Optionally, the set can be designated to receive additional alert tones while active on another call.

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PART 5 - Centrex / Plexar Services Original Sheet 35 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Ringing Options for MADN Provides additional ringing options to a Multiple Appearance Directory Number (MADN) group.

Secondary Directory Telephone Number Provides an additional directory number which is not physically terminated, but exists in the programming of Electronic Key Line Service. The additional directory number, while not terminated on a dedicated facility, may be accessed from the network and may originate unique outgoing dial tone from an instrument that has another directory number as its primary number.

Secondary MADN Call Forwarding Allows secondary Multiple Appearance Directory Number (MADN) members to activate or deactivate call forwarding from their sets.

Set Inspect Allows a station user to either display features assigned to buttons on the set or display calling or called number of an active call or call on hold via operation of a predesignated button.

Enhancement allows this feature to also be enabled on an automatic basis displaying call information as soon as a call is presented.

Short Hunt Permits incoming calls to hunt over a set of directory number appearances in search of an idle directory number on which to terminate.

Simultaneous Ring One Number (SR-ON) Causes one additional telephone number of the customer to ring simultaneously whenever the Centrex station number is dialed. The customer’s Centrex station and the SR-ON telephone number must be served from the same central office switch.

SR-ON is only available where equipment, features and facilities are available. Other restrictions and limitations may apply.

Single Line Extension Allows a single line set to be bridged with other single line sets using the same Directory Number. Extensions are bridged at the central office and can be to the same premises, different building or different premises in the same central office.

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PART 5 - Centrex / Plexar Services Original Sheet 36 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

2. Line Features (cont'd)

Speed Calling-Expanded Number Group Allows a station user to place calls to a list of numbers by dialing an access code. The size of the list depends on the serving technology type.

Speed Calling-Long Allows a station user to place calls to a list of 30 numbers by dialing an access code.

Speed Calling-Short Allows a station user having access to place calls to a list of 6 or 10 numbers by dialing an access code.

Stop Hunt This feature may be assigned to any hunt line, directory number, multi-line hunt line, or distributed hunt line and activated by one of the following options:

Access Code The feature is activated when the customer dials an access code.

Key The feature is activated by using a customer provided external key.

Time and Date Display Allows time and date to be displayed. Time and date are provided by the Central Office.

Touch Tone Provides for dialing a telephone number using Dual Tone Multi-Frequency (DTMF) signaling.

Transfer Calls to Restricted Station Allows incoming calls initiated from outside the Centrex system to be transferred by a designated station user to a Centrex line that is restricted from receiving incoming calls.

Usage Billing by Line Number Calls outside of the business system which incur message units or toll charges are billed by individual telephone number when the Company is the billing entity.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 37 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

3. ISDN Services and Features

Services

Alternate Circuit Switched Voice/Circuit Switched Data Service Provides the capability to originate and receive either Circuit Switched Voice or Circuit Switched Data calls over a single “B” channel, but not simultaneously.

The standard capabilities and features are the same as those shown for Circuit Switched Voice and Circuit Switched Data.

Circuit Switched Data Service Provides the ability to originate and receive Circuit Switched Data calls over the 64 Kbps “B” channel.

Circuit Switched Voice Service Provides the ability to originate and receive Circuit Switched Voice calls over the 64 Kbps “B” channel.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 38 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

3. ISDN Services and Features (cont'd)

Features - Voice

Increase Shared Directory Number (DN) Group Size Increases the number of customer provided multi-button sets that can share call appearances of a directory number from eight to thirty-two. One of the stations sharing a DN may be an analog set. This arrangement is provided only in association with ISDN National lines. Additionally, the number of station users who can bridge onto a conference call is subject to the restriction that the number of conferees plus conference bridges cannot exceed six.

Pickup Held Conference Call from Shared Directory Number (DN) Call Appearance Allows a user, with a customer provided multi-button set that shares a call appearance of a directory number with another user, to establish a conference call, place it on hold and have the other user pick it up.

Shared Directory Number (DN) Bridging with Conference Calls Allows users, with customer provided multi-button sets with shared call appearances of a directory number, to bridge onto a conference call established on a shared call appearance directory.

This arrangement is provided only in association with ISDN lines. Additionally, the number of users who can bridge on to a conference call is subject to the restriction that the number of conferees plus conference bridge cannot exceed six.

Terminal Management Provides for the management of ISDN terminals by designating the capability of:

Adjunct Control automatically turns on the speaker phone at the station set, if appropriate for the particular feature.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 39 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

3. ISDN Services and Features (cont'd)

Features - Voice (cont'd)

Terminal Management (cont'd)

Automatic-Hold/Drop Preference automatically determines how to handle a call active on one call appearance when the user shifts to another appearance. Two types of treatment are provided: - auto-drop - auto-hold

Button Management provides software release buttons that can be used for features or call appearances.

Call Appearance Selection for Implicit Conference and Transfer-Automatically selects an idle call appearance for the Implicit Conference and Transfer features.

Display for Ringing Call Appearances Only activates the display on customer provided multi- button sets only for ringing call appearances.

Idle Call Appearances Preference automatically selects an idle call appearance, if available, when a station user equipped with multiple call appearances goes off-hook. The idle call selection occurs when other call appearances are alerting the station set.

Ringing Call Appearance Preference automatically selects the call appearance that has been alerting the longest when the station user goes off-hook and other call appearances are alerting the station set.

Inspect for ISDN Terminals retrieves and displays call-related information on any call appearance that has an associated call.

Features - Data

Alternate Access Allows designation of an alternate host to be used to complete a call in the event that the primary host does not answer when the host is out of service.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 40 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

3. ISDN Services and Features (cont'd)

Features - Data (cont'd)

Far End Disconnect Supervision Provides automatic disconnect of one end of a data connection when the other end disconnects.

Hunt Group for Shared Data Access Provides automatic search of a group of shared ports to find an available port in response to a connection request.

Queuing Permits calls, in excess of the available lines in a hunt group, to be held in the central office and distributed in their order of arrival to the hunt group as the line becomes available.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 41 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features

Announcement Services Provides announcements periodically to assure callers that their calls will be answered and provides for delay periods between announcements and the type of treatment callers will receive between announcements (ringing, silence or music).

Announcements can be utilized with various Centrex services, such as UCD, ACD, Special Intercept, ARS, Queue Slots and Music on Hold. Two announcement arrangements are available:

Customer Premises Announcements provides an interface to the customer premises for recorded announcement or music.

Central Office Recorded Announcements may be provided in the following arrangements:

Standard announcements provides for Company announcements.

Customer specific announcements provides for announcements customized for an individual specific customer (maximum of 24 seconds).

Secondary Announcements can be designed to provide second or subsequent announcements that are different from the initial announcement.

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PART 5 - Centrex / Plexar Services Original Sheet 42 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Area Wide Networking (AWN) Allows subscribers to originate calls within geographically different locations using abbreviated dialing where the Company is the intraLATA usage provider. The called party and the calling party may be in locations served by different Central Office switches and different telecommunications systems.

AWN operates across the public network or private facilities and can be provided to subscribers with PBX, ISDN-Direct or other basic exchange services.

AWN is compatible with Centrex Mate.

AWN may include In Network Numbers and Out of Network Numbers. In Network numbers are all the telephone numbers that participate in the AWN dialing plan. Out of Network numbers are locations that may be dialed on an abbreviated basis but cannot dial back on the abbreviated dialing plan. Out of Network numbers may include telephone numbers that are not part of the subscriber’s telecommunications system or that are served from areas where the service is not available.

Two dialing plan formats are available: Extension Dialing and Custom Dialing. A combination of both dialing plans may be provided. Extension Dialing utilizes sequential digits from the North American Numbering Plan (the seven-digit telephone number) to originate a call, typically the last four digits of the telephone number. Custom Dialing utilizes a number pattern designed by the customer and may be unrelated to the actual telephone number. If the Custom Dialing format is used, it is the option of the customer to define the dialing format and input all Custom Dialing numbers associated with their dialing plan.

Additional business or residence telephone numbers may be added to the abbreviated dialing plan as Out of Network numbers designated for terminating calls only.

Out of Network numbers may be administered by the subscriber via Centrex Mate or a customer provided VT 100 compatible terminal by accessing the Service Management System (SMS). The subscriber is responsible for any usage charges incurred when accessing the SMS system.

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PART 5 - Centrex / Plexar Services Original Sheet 43 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Area Wide Networking (AWN) (cont'd) AWN provides subscribers with call management reports. These reports will generate daily, weekly or monthly information for the dialing plan based on originating, terminating or total dialing plan utilization. Customers may access the report feature via the SMS with Centrex Mate or a customer provided VT 100 compatible terminal.

Appropriate usage charges will apply to AWN calls routed over the public network.

Some central office features will require the dialing of the complete telephone number when the AWN feature is utilized. AWN dialing will also impact some line restrictions provided by certain central office features.

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PART 5 - Centrex / Plexar Services Original Sheet 44 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Assume Dial “9” An arrangement that allows station users to originate network calls by dialing the appropriate seven or 10 digit network telephone number without first dialing “9” for access to the public network.

All lines in the system are equipped with this feature. When associated with Split Service, Assume Dial “9” may be provided on one group of station lines and normal dialing arrangements on another group of station lines.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 45 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Attendant Console A special customer provided telephone instrument used by the attendant(s) to perform functions such as answering incoming calls, completing outgoing calls for restricted stations, etc. Console Arrangements are available for use with Digital and ISDN Centrex. Each digital console arrangement requires three Centrex lines. Each ISDN console Arrangement requires one ISDN line. A console Arrangement and associated Centrex lines are required for each console position.

Available Standard features are:

Access to Paging, Code Calling, etc. allows an attendant to access customer provided code call, paging, etc. equipment by dialing an access code and a called party code.

Attendant Call Park allows the attendant to park calls against any directory number in the attendant customer group. The parked call may be retrieved from any station by dialing the feature access code for retrieval plus the directory number. The attendant may also retrieve calls parked by stations and by attendants.

Attendant Camp On allows an attendant to extend an incoming call to a busy station. When the busy station becomes idle, it automatically rings and is connected to the waiting call.

Attendant Conference Capability enables an attendant to establish a 6-port conference (not including the attendant).

Attendant Console Screen Management provides management services for the attendant console.

Attendant Control of Call Forward Busy Line and Don’t Answer allows an attendant to change a station user Call Forward Busy and Don’t Answer designation number from a remote position.

ATT TN OH-08-18004 Effective: April 1, 2008

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 46 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Attendant Console (cont'd)

Available Standard features are: (cont'd)

Attendant Position Busy allows the attendant to make the console unavailable to additional queued calls. The attendant can originate calls and use or program the feature available while the console is in the Position Busy state.

Attendant Recall from Satellite allows line users located at remote Centrex Service locations without attendants to generate a recall of an incoming call back to the main location attendant.

Attendant Recorded Announcement provides callers a recorded announcement when calling the attendant and held in queue longer than the selected delay threshold.

Attendant to UCD Transfer enhances the UCD feature by enabling an attendant to originate or extend calls to UCD directory numbers.

Attendant Recorded Announcement provides callers a recorded announcement when calling the attendant and held in queue longer than the selected delay threshold.

Attendant to UCD Transfer enhances the UCD feature by enabling an attendant to originate or extend calls to UCD directory numbers.

Attendant Transfer enables an attendant to transfer a call to another attendant.

Autodial permits an attendant to dial frequently called numbers by pressing the Autodial feature key, which is programmed with a particular number.

Automatic Recall provides automatic recall timers for unanswered calls, call waiting recalls, and camped-on calls.

Busy Verification of Station/Trunk allows an attendant to determine whether stations or trunks are busy or idle.

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PART 5 - Centrex / Plexar Services Original Sheet 47 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Attendant Console (cont'd)

Available Standard features are: (cont'd)

Call Hold allows an attendant to manually hold a call on the loop by depressing the hold/release key, or automatically hold the call on the loop by depressing another loop key.

Call Hold with Recall provides automatic recall timers for calls on hold.

Call Park Recall Timer provides a separate timer for calls parked by the attendant. The timer defines the maximum time period that a call can spend in the parking lot.

Call Selection allows an attendant to answer calls as queued or manually select specific call types.

Call Splitting allows the attendant to talk privately to either the calling party or the called party. The attendant can alternate between the parties as required. Either party can be excluded; both cannot be excluded simultaneously.

Call Through Tests allows an attendant to access specific trunks within a Centrex trunk group for testing.

Console Display Capability allows the attendant to handle calls more efficiently by providing an alphanumeric display, LED indications and multiple line key board.

Console Test allows an attendant or maintenance personnel to test the functional operations of a console.

Control of Trunk Group Access allows the attendant to control access of all stations and incoming trunks to various trunk groups by operating corresponding keys.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 48 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Attendant Console (cont'd)

Available Standard features are: (cont'd)

Control of Virtual Facilities Groups allows the attendant to control access from all stations and trunks to various trunk groups by operating corresponding keys.

Delayed Operations enables the attendant to place a call for a calling station while the calling station waits on-hook. When the called station answers, the attendant can recall the calling station by depressing the signal source key. On answering, the calling station and the called station are connected.

Direct Trunk Group Selection allows the attendant to select an idle trunk for an outgoing call by pressing a single button on the console.

End to End Signaling allows the attendant console to send Dual Tone Multi Frequency (DTMF) signals.

Emergency Access to Attendant allows a station user to dial an emergency access code to gain immediate access to the attendant.

Emergency Override allows an attendant to complete incoming calls to stations that: are busy from activating the make busy key, have a series completion or multi-line hunt arrangement, have call forwarding activated, or have terminating restrictions.

Extended Calls to Busy/No Answer allows extended calls to a station with Call Forwarding Busy and Don’t Answer to be forwarded to a predetermined path.

Foreign Exchange (FX) Termination provides the ability to terminate an FX line on a console.

Flexible Console Alerting alerts the attendant to a call requiring attention by an alert tone through the headset instead of the console speaker.

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PART 5 - Centrex / Plexar Services Original Sheet 49 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Attendant Console (cont'd)

Available Standard features are: (cont'd)

Incoming Call Identification assigns incoming call information in one of four categories:

• Direct Calls • Directory Assistance Calls • INWATS Calls • Precedence Calls

Information/Display Calls in Queue provides the attendant with a visual indication of the number of calls waiting in queue.

Interposition Calling enables an attendant to call and speak to another attendant.

Locked Loop Operation allows the attendant to hold a call on a loop.

Lockout denies an attendant the ability to reenter a call unless the attendant is recalled by a station user or by Automatic Recall.

Message Waiting Control allows the attendant to activate/deactivate message waiting indication for station users.

Multiple Console Operation allows for a multiple number of consoles and loops.

Multiple Listed Directory Numbers allows the customer to have many listed directory numbers. To handle this efficiently, each number has a unique Incoming Call Identification (ICI) lamp so that the attendant can answer appropriately.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 50 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Attendant Console (cont'd)

Available Standard features are: (cont'd)

Night Service

• Fixed permits the forwarding of an incoming call to a predesignated station at night or time when attendant positions are unattended or inoperative. This feature is activated/deactivated by a button on the console.

• Flexible uses the Centrex Call Forwarding Variable Feature to activate or cancel night service.

Power Failure Transfer routes calls destined for an attendant to a preassigned directory number during a communications failure or loss of power to the attendant console.

Queuing with Call Waiting Indication permits incoming calls to be held awaiting the availability of an idle line, and to be delivered from the queue on a first in, first out basis. Additionally, on properly equipped customer premises equipment, a visual signal on each attendant position is provided to indicate when calls are waiting to be served.

Release Upon Completion of Dialing allows an attendant to extend a call to a trunk, then release the call after the dialing is completed and before out-pulsing to the trunk is completed.

Secrecy allows the attendant to talk to a called party (destination) without the calling party (source) hearing the conversation. When the Attendant releases from the call, the source and the destination are connected.

Serial Calling allows an attendant to extend a call to more than one station.

Speed Calling allows an attendant to dial frequently dialed numbers by depressing a speed calling key and dialing one or two digits. The frequently dialed number may be a directory number, authorization code, account code or access code.

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PART 5 - Centrex / Plexar Services Original Sheet 51 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Attendant Console (cont'd)

Available Standard features are: (cont'd)

Straightforward Outward Completion allows an attendant to extend a call outside the customer group while the station user may remain off-hook.

Supervisory Console allows an attendant to call a supervisor for assistance and to extend a call to a supervisor for subsequent call handling. It also allows the supervisor to monitor the progress of an attendant and to give assistance while the attendant is handling a call.

Supervisory Console allows an attendant to call a supervisor for assistance and to extend a call to a supervisor for subsequent call handling. It also allows the supervisor to monitor the progress of an attendant and to give assistance while the attendant is handling a call.

Switched Loop Operation (virtual loop concept) trunks and lines do not have direct termination on the consoles.

Through Dialing allows the attendant to select the trunk facility for a station in the same customer group and send dial tone to the station user. The station user then dials the called number. This feature provides an override of station restrictions in the same customer group.

Time of Day and Date provides a display of the time of day and date.

Timed Reminder provides a timer whose length is specified by the customer. The timer is started when a call is camped-on a busy station. When the called party has not answered, or when a call is on hold, and the timer expires, the attendant is recalled and can pick up the call to talk to the calling party.

Toll Diversion to Attendant reroutes toll calls, which are attempted by toll restricted stations, to the attendant for assistance.

Trunk Busy Identification provides a display of the trunk group status on the attendant console. The lamp state is: • off - when one or more trunks in the group is idle • on - when all trunks in the group are busy

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 52 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Attendant Console (cont'd)

Available Standard features are: (cont'd)

Trunk Group Busy/Access Control Key provides special keys to serve as a common interface for Trunk Group Busy and Trunk Group Access Control for all trunk groups allocated to the customer group.

Trunk Group Identification/Indicators provides a display of the trunk group and member number of the incoming or outgoing trunk in use either at the request of the attendant or automatically on incoming trunk calls.

UCD from Queue provides for a uniform distribution of calls from the attendant queue to a group of attendant positions.

Verification of Authorization Codes allows customer group attendants to validate authorization codes.

Wild Card Key enables the attendant to invoke special features not directly available through a feature key on the console. Any special feature normally available through the use of a feature key may be invoked through the Wild Card Key, with the exception of intercom caller identification.

800 Termination provides capability of terminating an 800 service call into a UCD group or on a compatible console.

Available Optional features are:

Attendant Call Detail Entry allows the attendant to enter cost allocation information into the Station Message Detail Recording (SMDR) or Call Detail Recording Service (CDRS) service record. This feature requires Call Detail Account Recording (CDAR) Service and SMDR or CDRS.

Attendant Conference (30 Port) enables the attendant to establish a 30 port conference (not including the attendant).

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PART 5 - Centrex / Plexar Services Original Sheet 53 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Attendant Console (cont'd)

Available Optional features are: (cont'd)

Direct Station Selection and Busy Lamp Field allows the attendant to monitor, via a busy lamp field, the status of directory numbers that appear in the group. It will also provide direct dialing to a monitored station by depressing a key.

Multi Position Hunt (MPH) distributes calls over a group of up to 16 line-loop attendant positions each of which can handle up to six types of calls. Incoming calls are rerouted only to idle positions with a loop for that type of call. Only Multi Line Hunt Group (MLHG) lines can be used with the MPH features.

Name Display for Attendant Console enables the attendant console to display the name of a calling (or called) party.

Operational Measurements provides attendant operational measurements for a customer group or subgroup. Types of operational measurements included are counts for aggregate work time, minutes active, and number of calls handled for each attendant position.

Authorization Codes An arrangement used to identify callers for billing purposes to assign network class of service and to control network access. Available for both voice and data in initial 100 count. Additional codes are available in counts of 25.

Station Specific Codes is an arrangement that allows up to ten Authorization Codes to be assigned for use on a specific line.

Automatic Route Selection-Basic Allows for the completion of calls to a public network telephone number by automatically scanning the digits and selecting a first choice completion route when available, or a subsequent route if the first choice route is not available. Routes may include Foreign Exchange lines, WATS lines, Carrier access lines, the DDD network, or other compatible arrangements. The final completion route may be the public network. The delivery of digit one to an interexchange carrier is available.

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PART 5 - Centrex / Plexar Services Original Sheet 54 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Automatic Route Selection-Basic (cont'd) It is the responsibility of the customer to notify the Company regarding updates to the customer’s ARS patterns whether caused by changes in the customer’s private network or the public switched network.

Automatic Route Selection-Deluxe Allows for the completion of calls to a public network telephone number by automatically scanning the digits and selecting a first choice completion route when available, or a subsequent route if the first choice route is not available. Routes may include Foreign Exchange lines, WATS lines, Carrier access lines, the DDD network, the IDDD network, or other compatible arrangements. The delivery of digit one to an interexchange carrier is available.

It is the responsibility of the customer to notify the Company regarding updates to the customer’s ARS patterns whether caused by changes in the customer’s private network or the public switched network.

The final completion route may be the public network, or at the direction of the customer, the call attempt can be routed to Expensive Route Warning Tone.

Facility Restriction Levels (FRL) are required with ARS-D and are required on each Centrex line and incoming tie line to determine both the type of call and type of facility within the privileges of the associated user.

Authorization codes are required to allow a station user to dial a code to override the restriction level associated with the dialing Centrex line or tie line. The Centrex requests the Authorization code when the default FRL has insufficient privileges to complete the call. The Authorization code is also inspected for validity as a security check.

Time of Day routing, an option, permits the pre-programming selection of alternate routing pattern groups for off-network calls on a time of day and day of the week basis.

Automatic Alternate Routing for tie lines provides automatic routing of calls to alternate tie line routes when the primary tie line route is in use.

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PART 5 - Centrex / Plexar Services Original Sheet 55 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Automatic Route Selection-Deluxe (cont’d) Automatic Overflow to DDD provides completion of on-network calls via the toll network when all primary and alternate tie line routes are busy.

Deluxe queuing permits station users to be placed in a queue whenever all facilities in the first choice route in a pattern for completing a particular call are already in use.

ARS-Deluxe can be optionally equipped to scan up to 10 digits or provide IDD Dialing.

Call Detail Recording Service (CDRS) Provides Centrex customers with network calling information that is generated at the central office and saved on a central storage medium for retrieval by the customer. An identifier is included which indicates the number of attempted and completed calls. An alternative access arrangement utilizing File Transfer Protocol (FTP) may be used.

Call Forwarding Multi Path Provides for the simultaneous forwarding of multiple incoming calls to a predesignated telephone number. Adequate facilities are required for their termination. One such Multi Path feature is required for each type of call forwarding feature such as Variable, Busy, Don’t Answer, and each line with which it is associated. Availability is limited to an intraoffice basis except where inter-office forwarding is available and facilities permit.

Call Waiting Lamp Interface Provides a visual status of queued calls via busy lamps. Busy lamps are activated through a channel from the serving central office.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 56 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Centrex Mate The Centrex Mate feature is provided as a standard feature for customers selecting a 7-line category or higher and as an optional feature for customers selecting less than a 7-line category. The Centrex Mate feature allows a Centrex customer to make changes in the station line and/or feature configuration of the Centrex System as an alternative to the standard Company service order process. Centrex Mate allows the customer to manage feature assignments per line, exchange station numbers between like station lines, verify the assignment of features on an individual station line or bulk basis, sort for stations that have particular features, and obtain internal directory information for stations in the Centrex Mate database. Centrex Mate is offered subject to availability of facilities and compatibility of the serving central office.

The customer is responsible for any charges incurred to access the Centrex Mate system.

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PART 5 - Centrex / Plexar Services Original Sheet 57 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Centrex Mate (cont'd) Centrex Mate customers may elect to continue to use standard service order procedures at any time, and the service will be implemented by the Company at the prevailing charges and service intervals as specified elsewhere.

Customers may elect to have a third party other than the customer implement and manage their system for them. If this option is elected, the customer assumes responsibility for all changes executed by their authorized agent.

The Company reserves the right to withhold the service if it is determined to be incompatible with existing Switching Systems. Also, some functions of the central office switching system will have priority over execution of customer change requests. The Company assumes no responsibility for change requests delayed by priority central office functions.

Not all features and capabilities are included in Centrex Mate. A service order will be required to rearrange some items. These include but are not limited to:

• swaps of off-premises lines in different wire centers; • lines not included in Centrex Mate such as attendant lines, • multi-line hunt lines, and lines with special equipment.

Responsibility of the Company The Company will provide training to these customers who elect to utilize Centrex Mate themselves and decline to elect an authorized agent. Training will be provided by the Company at the time Centrex Mate is activated without charge. Subsequent training can be provided for the customer at an additional charge, as specified elsewhere in this offering.

The Company will provide the customer or the designated authorized agent with the security password access codes for the customer's Centrex Mate System.

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PART 5 - Centrex / Plexar Services Original Sheet 58 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Centrex Mate (cont'd)

Responsibility of the Company (cont'd) The customer is responsible for the administration and protection of the Centrex Mate password and access code and will be responsible for any charges arising out of unauthorized use of the password. Customers electing an authorized agent to administer and manage their Centrex System shall be responsible for that agent's use and protection of the password and access codes.

The customer will designate at the time of installation whether they will manage their Centrex Mate system themselves or through an authorized agent. If the authorized agent is selected, the customer will provide the Company with a signed and dated letter authorizing the agent to manage the Centrex Mate system on their behalf. The customer accepts responsibility for all changes made on their behalf by their agent.

Centrex Message Signal Interface (CMSI) Provides for the transmission at 1200 and 9600 baud rates of certain called number and other identification information via a data link connecting the CMSI input/output port located in the Company central office to Customer Provided Equipment.

ACMSI service consists of three features: Call History Package Delivery, Remote Activation of Message Waiting Indicator and Message Waiting Indication.

Call History Package Delivery provides detailed information of calls forwarded from Centrex lines via a Centrex multi-line hunt group and associated data link from the Company’s central office to the customer provided Message System Interface.

Remote Activation of Message Waiting Indicator allows the Centrex customer to activate/deactivate an audible message waiting tone on Centrex lines or a visual LED indication on electronic business sets.

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PART 5 - Centrex / Plexar Services Original Sheet 59 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Centrex Message Signal Interface (CMSI) (cont'd)

Message Waiting Indication Audible provides an audible tone signal on a Centrex line or, where technology permits, a visual LED indication on an electronic business set. The Message Waiting Indication Audible feature is provided as part of the Centrex Basic Line on a per line basis.

Centrex Message Signal Interface - Expanded (CMSI-E) Centrex Message Signal Interface-Expanded (CMSI-E) is a Centrex feature designed to link a Centrex customer’s premises equipment (CPE) to the Company’s central office in order to pass signaling and message detail information. This service will allow a customer with operations located in multiple Central Office locations, operations located in multiple Central Office locations and an alternate carrier’s service, or operations in a single Central Office and an alternate carrier’s service in the same LATA to use a single data (CMSI-E) link.

This service is available at both a low speed (1200 baud) and a high speed (9600 baud).

CMSI-E service consists of three features: Call History Package Delivery, Remote Activation of Message Waiting Indicator and Message Waiting Indication.

Call History Package Delivery provides detailed information of calls forwarded from Centrex lines via a Centrex multi-line hunt group and associated data link from the Company’s central office to the customer provided Message System Interface.

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PART 5 - Centrex / Plexar Services Original Sheet 60 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Centrex Message Signal Interface - Expanded (CMSI-E) (cont'd)

Remote Activation of Message Waiting Indicator has two options.

Remote Activation of Message Waiting Indicator:

• allows the Centrex customer to activate/deactivate an audible message waiting tone (stutter dial tone) on Centrex Lines or a visual LED indication on electronic business sets.

Remote Activation of Message Waiting Indicator-Alternate Network Delivery:

• allows the Centrex customer to activate/deactivate an audible message waiting tone (stutter dial tone) on Centrex Lines or a visual LED indication on electronic business sets, and

• send MWI messages to one pre-defined SS7 Point Code of its suitably equipped alternate network provider. The alternate network telephone numbers must be in the same LATA as the customer’s CMSI-E link.

The Remote Activation of Message Waiting Indicator-Alternate Network Delivery option is limited to customers with operations in five or less Central Office locations in the LATA.

Message Waiting Indication Audible provides an audible tone signal on a Centrex line or, where technology permits, a visual LED indication on an electronic business set. The Message Waiting Indication Audible feature is provided as part of the Centrex Basic Line on a per line basis.

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PART 5 - Centrex / Plexar Services Original Sheet 64 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Centrex Virtual Network (CVN) Centrex Virtual Network (CVN) extends intercom calling geographically within a LATA, providing virtual connectivity among all types of Centrex lines using the public network.

All lines in the Centrex system and at each premises location must be included in a customer’s CVN. Multiple customers sharing Centrex Common Blocks cannot be part of an CVN. A minimum of 50 lines is required to establish CVN except with OmniPresence. CVN applies to only Company provided Centrex lines using the Company as their intraLATA usage provider. Systems exceeding 25,000 lines may require special construction charges, except with OmniPresence. See the OmniPresence description elsewhere in this offering for exceptions to the above.

All lines in the network must terminate at an authorized premises location of the Customer of Record. Authorized locations include branches, factories, plants, etc., of the Customer of Record, or a subsidiary of the Customer of Record. A network may not be shared among unaffiliated end users.

CVN requires a measurement of the customer’s usage busy hour represented by CCS value. A CCS is defined as a measure of traffic usage expressed in Hundred Call Second Increments (where the Roman numeral C represents one hundred). One call which lasts 100 seconds constitutes one CCS. There are 36 CCS in one hour.

When CVN is provided through resale, all lines in each CVN network must terminate at an authorized premises location of the same end user customer of the reseller. All other terms and conditions as stated above, including the requirement of a minimum of 50 lines per end user customer, apply.

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PART 5 - Centrex / Plexar Services Original Sheet 65 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Centrex Virtual Network (CVN) (cont'd)

OmniPresence CVN

OmniPresence CVN provides a virtual local presence from multiple remote Centrex locations to a hub location of the same end user customer of record. OmniPresence is an Centrex Virtual Network (CVN) feature and CVN service parameters apply. The customer must subscribe to both Remote OmniPresence and Hub OmniPresence.

The OmniPresence network requires a minimum of 26 lines/channels. All remote location lines/channels in the OmniPresence network are OmniPresence Centrex Basic lines or OmniPresence Centrex National ISDN lines with a Circuit Switched Data “B” channel.

Circuit Switched Data Service standard capabilities (Call Diverting, Hunt Group for Shared Data Access, Intercom Calling, and Speed Calling-Short) are not available when used with OmniPresence CVN. The Centrex line feature Call Forwarding-Busy is provided as a standard Circuit Switched Data Service capability when used with OmniPresence CVN.

Each remote location requires a dedicated Centrex System and the Centrex system feature, Call Forwarding MultiPath.

Centrex Mate is not available on OmniPresence Lines.

Digital Transport Service and/or ISDN Prime Service are/is required at the hub location to provide termination of calls to the customer premises.

OmniPresence service must terminate on Customer Premises Equipment in the LATA where Centrex OmniPresence service is provided.

Additional lines/channels at the OmniPresence hub location are not required to be a part of a customer’s OmniPresence CVN.

Networks exceeding 2,000 lines/channels may require special construction charges.

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PART 5 - Centrex / Plexar Services Original Sheet 66 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Centrex Virtual Network (CVN) (cont'd)

Regional CVN (RCVN)

Regional CVN is a regional virtual network service for on-net calling using abbreviated/customized dialing. It interconnects a maximum of five (5) CVNs in multiple LATAs within the Company's Midwest region. RCVN requires private facility terminations into the hub Centrex. Private facilities provided by an interexchange carrier (IXC) facilitate transport of interLATA calls. All intraLATA transport is virtual and is carried by the Company. All CVN parameters apply for Regional CVN.

Virtual Route Selection (VRS)

Virtual Route Selection is a Centrex Virtual Network (CVN) option that provides multi-location customers the means to redirect all their direct dialed interLATA off-net and out-of-network calling to a single or multiple location(s).

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PART 5 - Centrex / Plexar Services Original Sheet 67 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Conference Services A Six Port Conference circuit allows attendants and station users to establish conference calls beyond the standard Three Way Calling feature up to six conferees.

A Six Port Conference circuit may be expanded to accommodate up to 30 conferees by adding Conference Linking arrangements. One Conference Linking arrangement provides four additional ports.

- Meet Me conferencing allows station users to hold a conference by dialing a directory number associated with a specific conference bridge at a predetermined time.

- Station Controlled allows station users to hold a conference by dialing a directory number associated with a specific conference bridge at a predetermined time.

Privacy Release Conference Control Provides conference circuits designated for the exclusive use of MADNs and allows them to use three port as well as six port conference circuits.

Preset Conference Allows a Centrex station line, trunk, or attendant console, to establish a conference call with a maximum of 25 conferees by dialing a specific directory number. The dialing of the DN invokes simultaneous ringing of the preselected conferees. The conferees are specified and notified in advance.

Customized Call Diverting Enables the customer to block or allow one or more NPA and/or NXX numbers when these numbers are dialed by selected stations within the customer group.

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PART 5 - Centrex / Plexar Services Original Sheet 68 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Dial Plan for Advanced Solutions (DPAS)

Converts an abbreviated number to the 10-digit telephone number used for direct calls. DPAS allows a Centrex customer to use an abbreviated dialing plan for intraLATA calls:

• between Centrex systems’ stations (“in-network”); and/or, • from a Centrex station to an out-of-network number.

In-network numbers can be dialed and can dial back on an abbreviated basis. DPAS customers can dial out-of-network numbers on an abbreviated basis; however, the DPAS feature itself does not provide a means for an out-of-network number to dial back on an abbreviated basis. The total number of out-of-network numbers cannot exceed the sum of the number of Centrex stations in use when the DPAS feature was established plus the number of Centrex stations added to the system(s) at a later date. All stations in a Centrex System Dialing Plan must be equipped with the DPAS feature but not all Dialing Plans must be equipped with the DPAS feature. All in-network and out-of-network numbers must be assigned to the Customer of Record or a subsidiary of the Customer of Record.

Two dialing plan formats are available: Extension Dialing and Location Dialing.

The Extension Dialing Plan uses sequential digits from the seven digit telephone number (the “extension number”) to identify an in-network or out-of-network number. Typically, the extension number is the last four digits of the telephone number. Each extension number in the dialing plan must be unique.

The Location Code Dialing Plan uses a leading digit (the “location code”) plus an extension number to identify an in-network or out-of-network number. Location code(s) permit duplication of extension numbers.

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PART 5 - Centrex / Plexar Services Original Sheet 69 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Dial Plan for Advanced Solutions (DPAS) (cont’d)

The customer can choose between two DPAS billing alternatives, the Basic Dial Plan option or the Deluxe Dial Plan option. Customers who choose the Basic Dial Plan option will be assessed normal usage charges for both in-network (inter-Centrex) and out-of-network messages. Customers who choose the Deluxe Dial Plan option will be charged a flat rate for both in- network (inter-Centrex) messages and out-of-network messages completed to telephone numbers in the same Rate Center as the originating Centrex telephone number. If a Deluxe DPAS customer calls an out-of-network telephone number in a Rate Center that is different from that of the originating Centrex telephone number, the Company will assess normal usage charges.

The Company will charge a DPAS Change Charge and a Service Order Charge for modifications to the customer’s DPAS feature. Neither a DPAS Change Charge nor a Service Order Charge will apply for changing an in-network number to an out-of-network number.

DPAS is only available where equipment, features, and facilities are available. DPAS may conflict with the following Centrex features: Automatic Callback, Automatic Recall, Repeat Dialing, Account Codes, Attendant Consoles, and ISDN Data Calls. Other restrictions and limitations may apply. No charges will apply for removing incompatible Centrex features.

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PART 5 - Centrex / Plexar Services Original Sheet 70 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Direct Inward System Access (DISA) Service/1/ Allows users outside Centrex Service system to access the Centrex Service system by dialing predetermined Network Access Lines.

DISA requires two additional Optional System Features, Authorization Codes and Station Message Detail Recording (SMDR) Service.

The DISA service includes the following features:

Invalid Authorization Code Treatment - Routes incoming calls to optional announcement. The optional announcement may provide additional information as to why the call was not completed.

Time out of Incoming Calls - Routes incoming calls that time out waiting for digits to be dialed to an attendant or an optional announcement.

A Directory Telephone Number is required for each access arrangement to a Centrex Service System, i.e., three simultaneous calls to the DISA service will require three telephone numbers.

Do Not Disturb An arrangement that intercepts incoming calls to a Centrex line(s) during specified periods of time when a station user(s) does not want to be disturbed. This arrangement can be provisioned for individual lines or groups of lines. This feature may be activated/deactivated via a key by the attendant or a designated station user.

Electronic Directory Interface (EDI) Service Provides station users and the attendant(s) the ability to communicate with an electronic directory. This arrangement is available to calls originated within the Centrex Service system. The EDI interface, located in the Company’s central office, routes calls for directory information to a customer provided processor.

/1/ Effective August 31, 1996, this feature is no longer available to new Centrex Service customers or to existing customers expanding their current systems.

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PART 5 - Centrex / Plexar Services Original Sheet 71 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Electronic Directory Interface (EDI) Service (cont'd) Electronic Directory provides for the following on ISDN lines associated with properly equipped customer provided sets.

Calling Name Display provides the name and directory number of the calling party to be displayed.

Direct Query Display allows the station user with a properly equipped customer provided set to query for a person’s directory number.

Automatic Calling permits the party associated with the information being displayed to be called during a directory query without dialing the designated directory telephone number.

Extended Intercept Service Extended Intercept Service (EIS) provides an additional announcement intercept other than nonworking station announcement and reference to listed directory number.

EIS on disconnected Centrex station lines, provides a reference of calls to another number via an automatic intercept system.

EIS will be provided subject to the availability of telecommunication facilities and AIS equipment.

Arrangements for the service are made with the understanding that the customer assumes all risk in connection therewith and that no liability attaches to the Telephone Company by reason of failure to complete any call.

EIS is furnished subject to receipt of a customer's request in sufficient time to permit the Telephone Company to effect the necessary arrangements.

Prices do not apply to the attendant interception of calls to non-working stations of a system, which is a Centrex system standard feature, or to the mechanical interception of calls to non- working stations of a system, when used in lieu of the attendant intercept.

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PART 5 - Centrex / Plexar Services Original Sheet 72 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

High Speed Data Service An arrangement that provides digital, full-duplex synchronous data transmission within a Centrex Service System, at speeds of 1.2 Kbps to 56 Kbps and asynchronous data transmission at speeds of 100 Kbps to 19.2 Kbps over a standard twisted pair loop. High Speed Data Service requires appropriately equipped Customer Provided Equipment.

High Speed Data Service may be used to access Public Switched Digital Services.

Music On Hold Interface An arrangement that allows access to Customer Provided Equipment that provides a continuous broadcast of music when a caller is placed on hold. Customer Premises Announcements are required per unique music source.

Network Speed Calling Allows up to 1000 numbers per system to be accessed via individual lists of up to 100 numbers each.

Number Retention Service (NRS) Allows calls placed to telephone number equipped with NRS to be automatically forwarded to a dialable telephone number served by the same central office switch or by a different central office switch located in the same central off area building serving the same exchange. The calling party pays only the applicable charges to call the number equipped with an NRS features.

Each NRS feature allows simultaneous forwarding of up to a maximum of twelve (12) calls or an unlimited call path threshold with a 1000 message cap per NRS line. Messages exceeding the cap per line will be billed at the Local Message charge.

The customer of record must subscribe to sufficient facilities at the terminating station to adequately handle calls without impairing, disrupting, or deteriorating services offered by the Company.

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PART 5 - Centrex / Plexar Services Original Sheet 73 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Outgoing Deluxe Trunk Queuing An arrangement that allows station users to have their outgoing call held in queue, by dialing a code, when the associated outgoing facilities are in use. This arrangement provides station users with "off-hook" or "on-hook" queuing for busy outgoing facilities. A queue slot is required for each call held in queue.

The following options are available for calls that are held in “off-hook” queue:

Silence on Queue provides silence when calls are held in queue. This arrangement is standard unless the customer elects Music on Queue or Recorded Announcement.

Music on Queue is an interface that provides for the connection with customer provided music equipment.

Recorded Announcement provides for one continuous repeating type announcement.

Priority Queuing station lines, equipped with this option have originating priority and their calls are loaded into queue ahead of non-priority calls. When the queue is full, priority calls route to overflow tone or to the DDD network.

Personal Call Screening Allows a station to whom another station’s calls are being forwarded, to transfer the call back to the forwarding station, overriding the forwarding feature.

Private Facility Access Termination

Line Side Access Connections

• Code Call Access permits station users and attendants to dial an access code and a called party code to activate customer provided audible and visible signaling devices.

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PART 5 - Centrex / Plexar Services Original Sheet 74 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Private Facility Access Termination (cont'd)

Line Side Access Connections (cont'd)

• Dial Dictation Access provides station users access to customer provided dictation recording equipment by dialing an access code.

• Loudspeaker Paging Access allows stations and attendants to access customer provided loudspeaker paging equipment located on the customer’s premises by dialing an access code.

• Radio Paging Access allows stations and attendants to access customer provided and radio paging equipment located on the customer’s premises by dialing a Centrex station number.

Trunk Side Access Connections The following trunk side access connections are available in either analog or digital format as outlined below.

• Advanced Private Line Access connects tie lines, private line facilities and access lines from switched private line services to Centrex dial switching equipment. It may also be used when compatible with and required for termination of facilities by Other Common Carriers (OCC’s)

• DS1 Connection is a termination used to connect dial type tie lines or Other Common Carrier (OCC) private communication services to a Centrex System. The termination can accommodate twenty-four channels, each dedicated to a specific service.

• Radio Paging Access provides station users and attendants the capability to access customer provided and radio paging equipment located on the customer’s premises via an access code.

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PART 5 - Centrex / Plexar Services Original Sheet 75 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Private Facility Access Termination (cont'd)

Trunk Side Access Connections (cont'd)

• PRI Connection is an ISDN Primary Rate 1.544 Mbps termination between two (2) central offices. It is used to connect tie lines, private switched network access lines, and Interexchange Carrier (IXC) private communication services to a Centrex system. The termination can accommodate twenty-three 64 Kbps “B” channels for circuit switching and one 64 Kbps “D” channel (23B+D) or twenty-four 64 Kbps “B” channel where “D” channels can be shared by several terminations.

Optional Features:

Channel Backup Arrangement provides backup for primary “D” channel under those circumstances where three or more PRI Connections share a single “D” channel. A predetermined channel on another PRI Connection would automatically take over call control and signaling functions.

Network Ring Again allows a station user that places a call over the PRI Connection to a busy station line at a distant PRI terminating location to be connected to the called station line without redialing when both the called and calling station lines become available.

Network Name Display allows a station user that laces a call over the PRI Connection to a station line at a distant PRI terminating location to view the caller’s name on a properly equipped customer provided set.

• Tandem Tie Line Access allows tandem connection of special service circuits dedicated to a customer group.

• Tie Line Access allows connection of special service circuits dedicated to a customer group.

Other Private Facility Access Connections

• Foreign Exchange/Feature Group A (FX)/FGA provides access to/from an FX/FGA line. Station users have the ability to transfer a foreign exchange call.

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1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Private Facility Access Termination (cont'd)

Other Private Facility Access Connections (cont'd)

• OUTWATS Access allows a station user access to OUTWATS services dedicated to a customer group by dialing an access code.

Queue Slots Queue slots are dedicated time slots in the central office, used to hold calls in a delayed state until a call can be further processed. A queue slot is required for each call to be held in queue. Calls in Queue may be provided a recorded announcement or music.

Special Intercept Service Allows the customer to provide an individual message when a station has been taken out of service. This feature provides access to the announcement and requires either a customer designated central office recorded announcement or an interface to customer premises recorded announcement facilities.

Split Service/1/ Permits segregation of station lines into separate groups, using an additional common block/customer group, enabling each separate group to have a different set of common system features.

Station Message Detail Recording Service - Premises (SMDR-P)/2/ Provides information on calls originating from Centrex Service lines to locations outside of the Centrex Service system. The calling information, generated at the Company’s central office, is provided in a data stream format and is delivered to the customer’s premises via a data link that is connected to Customer Provided Equipment. The calling information is not rated.

/1/ Effective August 31, 1996, this feature is no longer available to new Centrex Service customers or to existing customers expanding their current systems. /2/ Effective December 18, 1998, this feature is no longer available to new Centrex Service customers or to existing customers expanding their current systems.

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PART 5 - Centrex / Plexar Services Original Sheet 77 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

D. Features (cont'd)

4. System Features (cont'd)

Supplemental Three Digit Dialing Available on a Centrex system arranged for four- or five-digit intercom dialing. Three-digit dialing is provided as a means to reach an emergency station line on the same system, such as fire, police, etc.

Trunk Verification from Designated Station An arrangement that provides audible transmission level testing for originating and terminating trunk groups or a trunk within a trunk group for trunks associated with a Centrex system by a designated station user(s).

Uniform Call Distribution (UCD) Provides for the even distribution of incoming calls to all groups of lines arranged in a special hunting arrangement. Queuing may be provided with the addition of queue slots. The UCD capability may be provided with Electronic Key Line Service.

Virtual Routing Provides routing and call completion over 24 software defined access paths (virtual/simulated facilities group) for ValueLink Premier intraLATA toll service.

E. Technical References

Customer Provided Equipment (CPE) compatibility requirements are listed in Ameritech Technical References. All Customer Provided Equipment used to interface with Centrex Service is required to conform with the Technical Reference Specifications as used by the Company and found in the following Technical references:

Subject Technical Reference

Caller ID - Display AM-TR-TSY-000030 AM-TR-TSY-000031 Data AM-TR-NPL-850005 Electronic Key (Non--ISDN) AM-TR-NPL-850004 ISDN Console AM-TR-NPL-850006 ISDN Interface AM-TR-NIS-000068 OPTI-Centrex Digital Channel Bank MDP-326-140

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PART 5 - Centrex / Plexar Services Original Sheet 78 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

E. Technical References

The Technical References can be obtained from:

APEx Support Team (734) 523-7348

F. Prices

The following prices are applicable to standard installations of Centrex Service and are in addition to all other charges for associated services and equipment necessary to provide telecommunications service.

The total charge per Primary Station is the sum of the appropriate Network Access, Intercom line and Intercommunication charges (Basic lines, Electronic Key lines, ISDN Custom and National lines.) When the customer’s premises and the central office providing Centrex Service are located in different Service Areas, Base Rate, DS1 or DS3 Service charges will apply. (See Other Applicable Charges). Customers provided this service arrangement will require Channel Mileage (CM) and Channel Mileage Terminations (CMT) for each Centrex line. For ISDN Centrex lines having this service arrangement, three Channel Mileage (CM) and six Channel Mileage Terminations (CMT) are applicable when using Base Rate.

ISDN Centrex Circuit Switched calls outside of the system will be subject to measured usage prices. Refer to the Other Applicable Charges section for additional charges associated with the provision of Centrex Service.

System Charge

The System Charge is applicable to the establishment of any new Centrex system and to any relocation of an entire Centrex system, unless the customer’s relocation is within the serving central office boundary. The System Charge will be determined at time of installation based on the total number of equipped telephone numbers. A System Charge applies to each Centrex Service arrangement or common block.

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PART 5 - Centrex / Plexar Services Original Sheet 79 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

System Conversion Charges

When a customer converts existing service as a billing conversion only, service remains configured exactly as it currently exists, with no additional features (Centrex Mate is not provided). The following charges apply:

• Service Order Charge • Recurring System Charge

When a customer converts service, adding new features, and the customer programs the new line features with Centrex Mate. The following charges apply:

• Service Order Charge • Non-Recurring System Conversion Charge • Recurring System Charge

When the customer converts service, adding new features, and the Company programs the new line features. The following charges apply:

• Service Order Charge • Non-Recurring System Conversion Charge • Recurring System Charge • Appropriate Line Programming Charge

Intercom Lines/1/ The quantity of Centrex Intercom lines is determined by the Company by subtracting the number of Centrex network access lines from the total number of Centrex stations in service. The intercom line price and the associated discounts are determined by access area and quantity of Centrex Station Lines.

/1/ OmniPresence applications do not require Intercom Lines.

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 80 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements

Monthly Price per Intercom Line Access Area Description /Billing Code/ A B C D

Intercom Lines /CPXJB/ /CPXJC/ /CPXJD/

2 - 47 For $11.50 $13.00 $14.50 48 - 95 Future 11.50 13.00 14.50 96 - 199 Use 11.50 13.00 14.50 200 - 293 11.50 13.00 14.50 294 - 387 11.50 13.00 14.50 388 - 579 11.50 13.00 14.50 580 - above 11.50 13.00 14.50

Classroom Line Intercom Lines/1/ 6.53 7.64 13.14 Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

System Charges per system

2- 50 lines /CYA1X/ $ 250.00 $5.00 $5.00 $5.00 $5.00 51-100 lines /CYA2X/ 400.00 5.00 5.00 5.00 5.00 101-200 lines /CYA3X/ 575.00 5.00 5.00 5.00 5.00 201-500 lines /CYA4X/ 1,000.00 5.00 5.00 5.00 5.00 501 or more lines /CYA5X/ 1,500.00 5.00 5.00 5.00 5.00 or per OmniPresence Remote System, 2-6 OmniPresence remote lines /CYAXA/ 100.00 5.00 5.00 5.00 5.00

/1/ Classroom Lines are available only for K-12 Schools, see Features.

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 82 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

An ISDN line requires an ISDN Service to make the line operational

ISDN Custom line /ZDZ/ 2+ line category $54.00 $17.00 $16.00 $16.00 $16.00 7+ line category 54.00 17.00 15.75 15.25 15.25 25+ line category 54.00 17.00 15.25 14.50 14.50 50+ line category 54.00 17.00 14.50 13.75 13.75 100+ line category 54.00 17.00 13.75 13.00 13.00 200+ line category 54.00 17.00 13.00 12.25 12.25

ISDN National line /ZDQ/ 2+ line category 54.00 17.00 16.00 16.00 16.00 7+ line category 54.00 17.00 15.75 15.25 15.25 25+ line category 54.00 17.00 15.25 14.50 14.50 50+ line category 54.00 17.00 14.50 13.75 13.75 100+ line category 54.00 17.00 13.75 13.00 13.00 200+ line category 54.00 17.00 13.00 12.25 12.25

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 83 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

OmniPresence Remote Location-Basic line /NUH/ 2-6 line category - $8.00 $8.00 $8.00 $8.00 7-24 line category - 8.00 7.80 7.70 7.65

OmniPresence Remote Location-National ISDN line /ZNZAX/ 2-6 line category $15.00 9.85 9.85 9.85 9.85 7-24 line category 15.00 9.85 9.65 9.55 9.50

OPTI-Centrex-Basic line/1//2/ /NUC/ 2+ line category 16.00 9.00/3/ 8.00/3/ 8.00/3/ 8.00/3/ 7+ line category 16.00 9.00/3/ 7.80 7.70 7.65 25+ line category 16.00 9.00/3/ 7.80 7.60 7.55 50+ line category 16.00 9.00/3/ 7.65 7.30 7.00 100+ line category 16.00 9.00/3/ 7.50 7.10 6.75 200+ line category 16.00 9.00/3/ 7.40 6.95 6.50

/1/ OPTI-Centrex-Basic lines require a Company 1.544 Mbps or higher facility with multiplexing. The channel may be a Dedicated Communications Service DS1 Local Distribution Channel with DS1 multiplexing or part of a higher speed arrangement. (See Reference Section). /2/ The same charges apply for Ground Start on Opti-Centrex Basic lines as those that apply for Basic Centrex lines. (See Optional Line Features, Ground Start Line). /3/ Rates effective July 1, 1999.

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 84 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

ISDN Services

Circuit Switched Voice per “B” channel equipped /BSB5X/ $25.00 $4.70 $4.40 $4.30 $4.15

Circuit Switched Data per “B” channel equipped /BSB6X/ 20.00 9.00 8.50 8.00 7.50

Alternate Circuit Switched Voice/ Circuit Switched Data per “B” channel equipped /BSB1X/ 25.00 10.50 10.00 9.50 9.00

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PART 5 - Centrex / Plexar Services Original Sheet 85 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Nonrecurring Monthly Description /Billing Code/ Charge Price

Optional Line Features

Add On Modules 10 or 18 Button $ 50.00 20, 22 or 36 Button 100.00

Call Forward Over Private Facilities /PFY/ 5.00 $4.00

Call Request with Queue per line 1.00 per system /RQQPS/ 95.00

Caller ID on Non ISDN lines /ZC1ND/ 1 to 6 lines, per line 3.25 7 to 11 lines, per line 1.45 12 to 19 lines, per line 1.15 20 to 95 lines, per line 1.00 96 and over lines, per line .80

Caller ID with Name/NMP/ (See Reference Section-Advanced Custom Calling Features)

Calling Name Display on Intercom /NM3/ .50

CLASS Automatic Callback /ZCLAR/ 3.00 CLASS Call Screening /ZACSR/ 3.50 CLASS Repeat Dialing /ZACRD/ 3.50

CLASS Visual Message Waiting Indicator per line (VWG) /ZMWVM/ 5.00 1.00

Custom Calling Name on Centrex, per line /NHE/ 5.00 3.50

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PART 5 - Centrex / Plexar Services Original Sheet 86 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Nonrecurring Monthly Price Description /Billing Code/ Charge

Optional Line Features (cont'd) $ 5.50

Direct Connect Originating, per line /DOK/ $ 1.00 5.50 Direct Connect Originating with Delay, per line /WLS/ 1.00 100.00 Direct Station Selection/Busy Lamp Field with Fast Transfer /BUY/ 9.00

Distance Extension Per Electronic Key line /XTN/ 26.00 Per ISDN Custom or National line /XTN/ 26.00

Executive Display Communications .50

Calling Name Display on Intercom /NM3/ 5.00 .50

CLASS Visual Message Waiting Indicator per line (VWG) /ZMWVM/ 1.00 (Multiple feature discount may apply see Reference Section for location of Advanced Custom Calling Features)

Custom Calling Name on Centrex, per line /NHE/ 5.00 3.50

Direct Connect Originating, per line /DOK/ 5.50 1.00

Direct Connect Originating with Delay, per line /WLS/ 5.50 1.00

Direct Station Selection/Busy Lamp Field with Fast Transfer /BUY/ 100.00 9.00

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PART 5 - Centrex / Plexar Services Original Sheet 87 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Nonrecurring Monthly Description /Billing Code/ Charge Price

Optional Line Features (cont'd)

Distance Extension Per Electronic Key line /XTN/ $26.00 Per ISDN Custom or National line /XTN/ 26.00

Executive Display Communications .50

Ground Start Line /GST/ $5.00 10.00

Make Busy Key /DXV/ 2.00 5.50 (Certain switch types may require a Dedicated Communications Services channel)

Message Waiting Indication Lamp /MLN/ 5.00 1.65 (Certain switch types may require a Dedicated Communications Services channel)

Multiple Appearance Directory Number Multiple Call Arrangement /MA8/ 5.00 .25

Premium Feature Package per line or “B” channel service /ESY79/ 5.00 1.00

Query Busy Station, per queued station /QB2/ 7.50 1.50

Secondary Directory Telephone Number, each /SOT/ .25

Simultaneous Ring One Number 6.50 2.50

Single Line Extension, same premises, different building /SXBBA/ different premises /SXBCA/ Apply the price for a Centrex line(s) (May require a Dedicated Communications Services channel)

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PART 5 - Centrex / Plexar Services Original Sheet 88 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Nonrecurring Monthly Price Description /Billing Code/ Charge

Optional Line Features (cont'd)

Speed Calling-Long /ESHC3/ $10.75 $ .40

Speed Calling-Expanded Number Group /EJ3/ 10.75 .60

Stop Hunt Key /2URSH/ 2.00 4.95 (Certain switch types may require a Dedicated Communications Services channel)

Optional ISDN Data Features Provided on a per feature basis

Alternate Access /NZ2/ 5.00 3.00

Queuing /CQYPQ/ 10.00 1.00

Single Line Extension, same premises, different building /SXBBA/ different premises /SXBCA/ Apply the price for a Centrex line(s) (May require a Dedicated Communications Services channel)

Speed Calling-Long /ESHC3/ 0.75 .40

Speed Calling-Expanded Number Group /EJ3/ 10.75 .60

Stop Hunt Key /2URSH/ 2.00 4.95 (Certain switch types may require a Dedicated Communications Services channel)

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 89 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Optional ISDN Data Features (cont’d) Provided on a per feature basis $ 5.00 3.00 Alternate Access /NZ2/ 10.00 1.00 Queuing /CQYPQ/

Announcement Services Customer Premises Announcement $ 185.00 $ 18.00 $ 17.00 $ 16.00 $15.00 - per announcement /N5A/ (Requires a Dedicated Communciations Services channel)

Central Office Recorded Announcement/1/ 70.00 40.00 37.00 34.00 30.00 - per announcement /RKQ/

Secondary Announcement 70.00 40.00 37.00 34.00 30.00 - per announcement /RKQ/

Area Wide Networking (AWN)

per network 700.00 1-200 lines /NR9AE/ 1,000.00 201-500 lines /NR9AF/

additional 500 line 800.00 block /NR9AG/

/1/ For instances where the Company records the announcement on the customer's behalf, the Customization Charge as shown on Sheet No. 104 will also apply.

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 90 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Area Wide Networking (AWN) (cont’d)

per network

Out of Network numbers $ 30.00 up to 10 numbers /NR9AL/ per 50 number 30.00 block /NR9AM/ (each time block of 50 ordered)

Numbers input by the Company 75.00 up to 10 numbers /NR9AN/ per 50 number 300.00 block /NR9AO/ $1.00 per line /D6PLX/

Out of Network Numbers 1.00 up to 10 numbers /D7P1X/ per 50 number 2.50 block /D7PBX/

Assume Dial "9" 5.00 7.50 7.50 7.50 7.50 per system, per line /A9D/ (required on all lines)

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 91 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Attendant Console Digital, each /NG9PC/ $ 500.00 $220.00 $180.00 $165.00 $150.00 (Requires 3 Basic lines)

ISDN, each /MD9PC/ 1,500.00 220.00 180.00 165.00 150.00 (Requires 1 ISDN line)

Optional Features

Attendant call Detal Entry, per console /AE3PB/ 20.00 3.00 3.00 3.00 3.00

Attendant conference (30 port, each /C3P/ 20.00 8.00 5.00 5.00 5.00 (Requires conference service components)

Direct Station Selection and Busy Lamp Field per 100 stations /BUDPC/ 50.00 2.50 2.50 2.50 2.50

Multi Position Hunt per group /AHBPG/ 50.00 per position /A6V/ 2.50

Name Display for Attendant Console per console /NDFPC/ 250.00 20.00 20.00 20.00 20.00

Operational Measurements per console /AOKPC/ 65.00 5.00 5.00 5.00 5.00

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 92 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Authorization Codes Intial 100 count /AKG1X/ $350.00 $5.00 $5.00 $5.00 $5.00

Additional Codes, per 25 or fraction therof /AKG/ 80.00 1.00 1.00 1.00 1.00

Station Specific per line /AJN/ 2.00 1.20 1.10 1.00 .95

ARS Basic Initial pattern /AR9/ 700.00 10.00 7.50 6.00 5.00

Additional pattern /ARH/ 100.00 4.00 3.00 2.50 2.00

Digit 1 Deliver /DTN1x/ 300.00

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 93 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

ARS Deluxe per system /AQVPS/ $1,200.00 $40.00 $30.00 $24.00 $20.00

Routing Arrangements

Additional ARS pattern, each /ARH/ 100.00 4.00 3.00 2.50 2.00

IDDD Dialing per system /A1GPS/ 1,000.00 25.00 25.00 25.00 25.00

Seven to Ten digit screening per translation /AHAPS/ 900.00

Time of Day routing per schedule /TMQ/ 150.00 10.00 9.50 9.00 8.50

Digit 1 Delivery /DTN1X/ 300.00

Other available options are 900 Special Access and/or 976

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 94 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Call Detail Recording Service (CDRS)

Common Equipment Establishment $355.00

Per Station/CRV/ $.50 $.45 $.40 $.40

Call Forwarding Multi Path per system, forwarding arrangement /ESD/ 50.00 5.00 5.00 5.00 5.00

Call Waiting Lamp Interface per unique timing state /SUGPL/ 50.00 6.00 6.00 6.00 6.00 (Requires a Dedicated Communications Services channel)

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 95 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Centrex Mate (all stations must be equipped) - per system /MLBPS/ $ 600.00 $ 60.00 $ 60.00 $ 60.00 $ 60.00 - per station /MLB/ .40 .40 .40 .40

Centrex Message Signal Interface (CMSI) - per system 1200 baud/1/ /SMQPS/ 975.00 150.00 144.00 140.00 135.00 - per system 9600 baud/1/ /SM9PS/ 1,700.00 1,100.00 850.00 775.00 545.00

Centrex Message Signal Interface - Expanded (CMSI-E) - per system 1200 baud/1/ /AEXLX/ 2,200.00 4,100.00 2,275.00 1,995.00 1,500.00

Each CO after 5/2/ /ML7AX/ 800.00 365.00 300.00 250.00

- per system 9600 baud/1/ /AEXHX/ 2,600.00 4,900.00 2,895.00 2,425.00 1,900.00

Each CO after 5 /ML7AX/ 800.00 365.00 300.00 250.00

/1/ Requires a 3002 Dedicated Communications Service Channel between the customer premises and serving Central Office. /2/ Not available to customers who choose the Remote Activation of Message Waiting Indicator- Alternate Network Delivery option.

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PART 5 - Centrex / Plexar Services Original Sheet 98 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Centrex Virtual Network (CVN)

The following equation based on CCS and distance is used to determine the applicable monthly charge. The number of remote lines located 0 to 15 miles and 15 or more miles from the Hub location are used in the equation.

(Total remote lines within 0 to 15 miles)($CCS)/(Total remote lines in Network) + (Total remote lines beyond 15 miles)($CCS)/(Total remote lines in Network) + $1.00 = Price per line per month (Rounded to the nearest multiple of $.05)

CCS Values

0-15 Miles 15+ Miles Description Billing Code Rate Billing Code Rate

CCS Maximum 2.5 X 16KFX $2.20 X 16KFX $ 5.40 Maximum 3.5 X 16KFX 3.30 X 16KFX 8.10 Maximum 4.5 X 16KFX 4.40 X 16KFX 10.80 Maximum 5.5 X 16KFX 5.50 X 16KFX 13.50 Maximum 8.0 X 16KFX 7.70 X 16KFX 18.90

The Company reserves the right to reassess the pricing of the customer’s network if the negotiated CCS is exceeded.

Nonrecurring Charges and charges/prices for optional Out Of Network Numbers are found under the Area Wide Networking feature described elsewhere in this offering.

The following discount table is used for networks over 1,500 lines and is based on the contract length of the hub locations.

Description 3 Year 5 Year 7 Year

Line Size 1,500 - 3,999 10% 15% 20% 4,000 - 5,999 15% 20% 25% 6,000 - 7,999 20% 25% 30% 8,000 and above 25% 30% 35%

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PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 99 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Centrex Virtual Network (CVN) (cont’d)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

OmniPresence CVN/1/

Remote OmniPresence CVN per line/channel/300 16KFX/ - $15.00

Hub OmniPresence CVN per each channel /1U2F1/ - 43.00

Virtual Route Selection

The following prices for Virtual Route Selection are in addition to charges for CVN.

The following equation based on CCS and distance is used to determine the applicable monthly price. The number of remote lines located 0 to 15 miles and 15 or more miles from the hub are used. The price per remote line is applied to each remote line in the network.

(Total remote lines within 0-15 miles) ($CCS) / (Total remote lines in the Network) + (Total remote lines within 15+ miles) ($CCS) / (Total remote lines in the Network) + $1.50 = Price per remote line per month (Rounded to the nearest multiple of $.05) /16KFX/

/1/ For Nonrecurring Charges, see Area Wide Networking, per network feature described elsewhere in this offering.

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PART 5 - Centrex / Plexar Services Original Sheet 100 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Centrex Virtual Network (CVN) (cont'd)

Virtual Route Selection (cont'd)

CCS Values

Description 0-15 Miles 15+ Miles

CCS Maximum 2.5 $3.50 $ 7.00 Maximum 3.5 4.50 9.00 Maximum 4.5 5.50 12.00 Maximum 5.5 6.50 15.00 Maximum 8.0 8.50 20.00

The Company reserves the right to reassess the pricing of the customer's network if the negotiated CCS is exceeded. Nonrecurring Charges and charges/prices for optional Out Of Network Numbers are found under the Area Wide Networking feature described elsewhere in this offering.

Regional CVN (RCVN)

The following equation is used to determine the monthly price:

RCVN/1/, per line = (1.5) * (weighted average price of CVNs in customer’s network)

/1/ Use a factor of 1.2 if customer subscribes to VRS. The price for VRS is in addition to the price for RCVN. All remote locations must have VRS for the 1.2 factor to apply.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 101 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Conference Services six port conference circuit, each /EQ6/ $50.00 $60.00 $57.50 $57.50 $57.50

Linking with four additional conference ports, each arrangement /EQ6PA/ 65.00 40.00 40.00 40.00 40.00

Conferencing Preset - per group /MO9/ 400.00 25.00 25.00 25.00 25.00

Privacy Release Conference Control - per system equipped /PE8/ 25.00 20.00 20.00 20.00 20.00

Customized Call Diverting public or private network facilities - per system /RSHPS/ 165.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 102 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Dial Plan for Advanced Solutions(DPAS) Per DPAS Dial Plan established or Centrex Dial Plan or System added /SEPA3/ $200.00 - - -

Basic Dial Plan option, per Centrex Stn /D6PAB/ 1.00 $ .50 - - -

Deluxe Dial Plan option, per Centrex Stn /D6PAD/ 1.00 1.75 - - -

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 103 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Direct Inward System Access (DISA) Service/1/ per system /DJMPS/ $ 300.00 $ 80.00 $ 80.00 80.00 80.00 (DISA requires authorization codes and SMDR)

Do Not Disturb per line /DJD/ 5.00 2.00 2.00 2.00 2.00

per group of lines /DJDPG/ 50.00 4.00 4.00 4.00 4.00

Electronic Directory Interface (EDI) Service per EDI service /EDT/ 1,000.00 88.00 71.00 48.00 40.00

per lines equipped 1 - 250 /EDT1X/ 225.00 45.00 36.00 27.00 27.00 251 - 500 /EDT2X/ 225.00 90.00 72.00 54.00 54.00 501 - 1,000 /EDT3X/ 225.00 179.00 143.00 108.00 108.00 1,001 - 2,000 /EDT4X/ 225.00 358.00 286.00 216.00 216.00 2,001 - 4,000 /EDT5X/ 225.00 716.00 572.00 432.00 432.00 4,001 + /EDT6X/ 225.00 1,432.00 1,144.00 864.00 864.00 (requies an ISDN line (OB+D))

/1/ Effective August 31, 1996, this feature is no longer available to new Centrex Service customers or to existing customers expanding their current systems.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 104 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Extended Intercept Service (EIS) Acitivation of the initial 10 intercept stations or fraction thereof, per occasion $ 49.00

Activation of each additional intercept station. beyond the initiaal 10, per occasion 4.00

Per intercept station /PMA/ $3.00 $3.00 $3.00 $3.00

High Speed Data per line /DP9/ 419.00 12.00 10.00 9.50 9.50

Music on Hold Interface per system /MOH/ 185.00 18.00 16.00 16.00 16.00 (Requires a Dedicated Communication Services Channel)

Network Speed Calling per 100 number block speed call list, or fraction thereof /NWSPS/ 100.00 2.50 2.50 2.50 2.50

Number Retention Service (see Sheet 98 following)

Outgoing Deluxe Trunk Queuing per termination 200.00 8.00 7.25 7.00 6.80

Personal Call Screening per group /EV3PS/ 50.00 5.00 5.00 5.00 5.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 105 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Nonrecurring Monthly Description /Billing Code/ Charge Price

Number Retention Service

Same Central Office Switch, add to common block only, per number retained /NR9NR/ $60.00

Same Central Office Switch, number conflict with dialing plan, per number retained and up to:

1 to 2 Call Path Range /N1S12/ 60.00 $25.00

Unlimited Call Paths with 100 message cap, per number retained /N1SUA/ 60.00 44.00

Messages over 1000 Local Message Charges apply

Different Central Office Switch, Same Central Office Building, Same Exchange Area within Same Central Office Building per number retained and up to:

1 to 12 Call Path Range /N1D12/ 60.00 25.00

Unlimited Call Paths with 1000 messages cap per number retained /N1DUA/ 60.00 44.00

Messages over 1000 Local Message Charges apply

The calling party is responsible for payment of the applicable charges for sent-paid calls to the number equipped with NRS. For collect calls, the customer with NRS is responsible for payment of charges if the call is accepted by the forwarded to number.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 106 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Private Facility Access Termination

Line Side Access (apply the price for a Basic Centrex line(s)

Trunk Side Access Ananlog 2-Wire Termination per arrangement /2PV/ $ 75.00 $ 25.00 $ 25.00 $ 25.00 $ 25.00

Analog 4-Wire Termination per arrangement /4PV/ 75.00 25.00 25.00 25.00 25.00

DS1 Connection 24 channel digital termination) each arrangement /OP3/ 549.00 575.00 500.00 450.00 400.00

PRI Connection (24 channel digital termination) each arrangement /DUG1X/ 2,000.00 450.00 440.00 430.00 (Requires a Dedicated Communications Service channel)

Optional Features

"D" Channel Backup, each /ZPBXDP/ 200.00 120.00 115.00 110.00

Network Ring Again, per arrangement /ZRA/ 400.00 75.00 65.00 55.00

Network Name Display, per arrangement /ZNN/ 400.00 75.00 65.00 55.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 107 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Queue Slots per slot /AQA/ $ 10.00 $1.00 $1.00 $1.00 $1.00

Special Intercept per unique message arrangement /LA2/ 150.00 2.00 2.00 2.00 2.00

Split Service/1/ per system, per additional customer group /EBSPG/ 200.00 5.00 5.00 5.00 5.00

Station Message Detail Recording Central Office (See Reference Section)

Premises/2/ per system /NDR/ 900.00 300.00 300.00 300.00 300.00 (Requires a Dedicated Communications Services channel or a dial-up exchange access line)

Supplemental Three Digit Dialing per system /TENPS/ 125.00

per three digit access code /T38/ 75.00

/1/ Effective August 31, 1996, this feature is no longer available to new Centrex Service customers or to existing customers expanding their current systems. /2/ Effective December 18, 1998, this feature is no longer available to new Centrex Service customers or to existing customers expanding their current systems.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 108 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description Nonrecurring 1 36 60 84 /Billing Code/ Charge Month Months Months Months

Trunk Verification from Designated Station per system /BVSPS/ $ 50.00 $ 10.00 $ 10.00 $ 10.00 $ 10.00

Uniform Call Distribution (UCD) with queuing per UCD group /UQZPG/ 175.00 38.00

per line equipped /A82/ 5.00 2.00

per Electronic Key Line /UGP/ 5.00 3.50

Virtual Routing each group of 24 access paths /VF1/ 100.00 100.00 100.00 100.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 109 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Change Charges cover Additions and Changes of features subsequent to the initial installation. Other Service Order Charges may apply.

Nonrecurring Description /Billing Code/ Charge

Station (Line) Feature Change Charge per line, per occasion /REAFW/ $ 42.00

For lines equipped with Centrex Mate or not Change NCOS/CAT/LCC code performed on the Centrex line level Add or change (one or more) feature(s) Add or change hunting Change Line Class Code (Class of Service) Add or change pickup groups Add or change telephone numbers in the call pickup group or Centrex group Move a station line from one Centrex Group to another Add or change a Restriction Level Add or change button feature assignments

System Feature Changes

ARS-Basic/Deluxe Rearrangements, per occasion /RCHAZ/ 118.00

Additions, or modifications of codes or routing patterns for codes in three digit or in six digit routing arrangements Add, or change a route, pattern, Restriction Level or expensive route warning tone Add or change priority queuing Change from Ring Back Queuing to Off Hook Queuing or vice versa Change in the quantity of queue slots, or the queue threshold time limit or in the post queue routing from subsequent routes to tone or vice versa

Deluxe Time of Day Routing, per arrangement /RCHAT/ 128.00

Add, or change schedules Arrangements for additional Pattern Groups for Time of Day Routing

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 111 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Nonrecurring Description /Billing Code/ Charge

System Feature Changes (cont'd)

Number Retention Service /1/ Add or change forward-to number or number of call paths

Private Facility Access Terminations

PRI Connections, per occasion, per PRI Connection /REA1F/ 100.00 Changes and/or additions to an existing PRI Connection

SMDR Additions and Changes/2/, per occasion /RCHMH/ 27.00 Change from recording completed calls only to all calls, or vice versa Change in status of all station lines, or an individual facility from “records not required” to “records required” Add lines Add or change authorization codes or account codes

Reprogramming of a Non-Centrex or Centrex Line in the same stored controlled central office into or out of a Centrex system, per occasion, per switch 20.00

Customer request to convert from one switch type to another Apply charges as new service

All Other System Feature Changes, per occurrence/REAG9/ 64.00 Change a system feature Add or change a Centrex Access code Add, change or re-arrange Centrex Access Treatment code (CAT/NCOS) Expanded station range (per 40 lines) of lines Change recorded announcement

/1/ Apply the Station (Line) Feature Change Charge /REAFW/ /2/ Effective December 18, 1998, SMDR-P is no longer available to new Centrex Service customers or to existing customers expanding their current systems.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 113 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

2. Other Applicable Charges and Payments

Network Access See Part 4 Section 2 of this Guidebook./1/

OPTI-Centrex lines require Company provided Transport facilities and central office multiplexing as specified in Part 15, Section 3 of this Guidebook. OPTI-Centrex lines must terminate at a customer premises within the serving wire center boundaries.

End User Common Line Centrex lines are subject to an End User Common Line Charge (EUCL) as filed for the State of Ohio by the Ameritech Operating Companies in F.C.C. No. 2. The customer will be responsible for all increases and decreases in the EUCL charge, as authorized by the Federal Communications Commission. The monthly EUCL charge will be assessed on a per line terminated basis.

Usage Calls (voice or data) outside of the Centrex system are subject to applicable charges. (See Reference Section)

Telephone Numbers Centrex telephone numbers are provided pursuant to Part 8, Section 8 of this Guidebook.

Touch Tone Touch Tone service is provided as a basic feature of Centrex and is included in the charges for Centrex lines.

Caller ID

In Association with ISDN

Caller ID for calls from outside the system is a standard feature for Electronic Key Service on Circuit Switched Voice and Alternate Circuit Switched Voice/Circuit Switched Data services.

/1/ OPTI-Centrex Basic Lines and OmniPresence Remote Location Lines do not apply as Centrex Service Lines in the PBX Trunk Equivalency Schedule.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 114 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

2. Other Applicable Charges and Payments (cont’d)

References:

Service Reference

Advanced Custom Calling Features AT&T Ohio Guidebook Part 7, Section 2

P.U.C.O. Tariff No. 20 Part 7, Section 2

Digital Transport Services AT&T Ohio Guidebook Part 6, Section 7

ISDN Prime Service AT&T Ohio Guidebook Part 17, Section 2

Dedicated Communications Services AT&T Ohio Guidebook Part 15

Digital Services AT&T Ohio Guidebook Part 6, Section 7

Directory Listings AT&T Ohio Guidebook Part 12, Section 1

P.U.C.O. Tariff No. 20 Part 12, Section 1

Resale AT&T Ohio Guidebook Part 2, Section 2

Service and Equipment Charges AT&T Ohio Guidebook Part 3, Section 1

Usage Measured Usage Rate AT&T Ohio Guidebook Message Usage Rate Part 4, Section 2

P.U.C.O. Tariff No. 20 Part 4, Section 2

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 115 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

3. Payment Plans

Month to Month

The minimum period is one month, unless otherwise specified.

Term Payment Plans

The Contract Plan is a payment plan that allows customers to pay a fixed price for equipment and service over optional payment periods (terms). A different monthly price applies for the duration of each payment period. The monthly price varies inversely with the length of the payment period, e.g., the monthly price for a shorter period is greater that that for a longer period.

Contract Plans are available for payment periods of 12 Months, 24 Months, 36 Months, 60 Months, or 84 Months.

During the effective term of a Contract Plan period, the monthly price is not subject to Company- initiated changes for payment period longer than one month.

Service covered by a 12 or 24 months contract includes: Centrex Intercommunication lines

Services covered by a 36, 60 or 84 months contract includes: Centrex Intercommunication lines Optional System Features (no Termination Liability applies) Optional Line Features (no Termination Liability applies)

The same payment plan must apply to Intercommunication lines and features.

Services not covered by a 12, 24, 36, 60 or 84 months contract are: Centrex Network Access Line Charge End User Common Line Charge (EUCL)

Minimum Line Capacity Categories

Centrex provides 7 digit telephone numbers in Line Categories with the following capacities:

Number of Lines 2+ 7+ 25+ 50+ 100+ 200+

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 116 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

3. Payment Plans (cont'd)

Term Payment Plans (cont'd)

Additions

Customers may add additional lines and/or features to existing Centrex service anytime during the contract term. All additions of Centrex lines will be added at contracted prices. All additions to existing Centrex service will be coterminous with the original contract.

Upon growth to a higher Line Category, the customer may commit to a new term commitment that is equal to or longer than the remaining life of the existing contract. The customer will become liable for the new Line Category at the designated Term Payment Plan’s current monthly price. These prices will not be subject to Company-initiated increases for the duration of the new term payment period selected.

If the customer chooses not to contract for a higher Line Category, the monthly price for the additional Centrex lines will be the price appropriate to the Line Category of the customer’s existing term payment plan.

Contract Options

Prior to the completion of a contract, a customer may enter into a new contract for a period equal to, or greater than, the life of the original contract at the prices currently in effect at the time of the new contract. The customer will begin paying the new contract prices on the day of signing the new contract.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 117 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

3. Payment Plans (cont'd)

Term Payment Plans (cont'd)

Contract Options (cont’d)

During the last twelve months of a term contract, the customer may extend its contract with the same Line Category for either an additional 12-month or 24-month period at the same rates provided under the original contract. Subject to the Company’s right to seek to discontinue this option to extend the contract period or to otherwise change the terms and conditions of this option, the customer may exercise this option up to three separate times. Customers who exercise the option to extend the term of the contract are not entitled to a different rate based on the overall term of the contract as extended (e.g., customers who initially have a 36-month contract and extend it by an additional 24 months are not entitled to the rates allowed under a 60-month contract). An extension will begin on the expiration date of the existing contract or, if applicable, of the contract as extended. Requests to terminate contract extensions will be governed by the terms and conditions found in 1.F.3. following.

Upon expiration of a contract or contract extension, if the customer does not elect to subscribe to a new contract and does not request discontinuance of the service, service will be continued on a month-to-month basis. The month-to-month prices currently in effect at the time of expiration of the contract will apply. Once on a month-to-month basis, the customer will have not additional service commitment and will no longer be subject to termination charges. The month-to-month service prices will be subject to Company-initiated price changes.

Single Payment Option (SPO)

For payment period longer than one month, the customer may prepay the total outstanding recurring charges for items under a Contract Payment Plan. The prepayment of charges in no way constitutes a purchase and the Company retains full ownership of all equipment covered by the prepayment.

The annual percentage rate for SPO is included in Part 2 Section 3 of this Guidebook.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 118 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

3. Payment Plans (cont'd)

Deferred Payment Option (DPO)

The Nonrecurring Charges (NRC’s) associated with Centrex may be paid in full with the first bill after cut-over to the system or may be financed under the provisions of the following plan:

Payment of Nonrecurring Charge may be deferred, subject to conditions outlined herein. The deferral periods must be equal to or shorter than the customer’s chosen contract payment period.

The minimum amount of Nonrecurring Charges which may be deferred for the initial establishment of service is $150.00 per Contract Plan.

Subsequent, Nonrecurring Charges applicable for later additions may be deferred for a period equal to or less than the period remaining in the customer’s chosen contract payment period.

The interest rate to be charged on deferred payment of Nonrecurring Charges is determined at the time of execution of the deferred payment plan agreement and is not subject to change during the term of the deferred payment plan.

If, in the judgment of the Company, the maximum interest rate allowed by law is insufficient to cover the costs of providing the deferred payment option on new Contract Plans, the Company may suspend the offering of new deferred payment options until the costs can be recovered through the application of a lawful interest rate.

Deferred charges will be come immediately due and must be paid in full at the option of the Company when the customer:

Enters into a new contract prior to the expiration of the existing contract.

Discontinues service prior to expiration of the selected deferral period.

Fails to pay any charges applicable to the service within 30 days of its due date.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 119 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

3. Payment Plans (cont'd)

Deferred Payment Option (DPO) (cont'd)

The customer may prepay all or part of the total outstanding deferred charges during the selected deferral period and will be given a credit for the amount of unearned interest.

Termination Charges

Full Termination

Discontinuance of the entire service within the original or extended service contract period will result in termination charges calculated as the present value of the (Line Category Commitment) X (contracted monthly Centrex station feature price) X (unexpired portion (in months) of the contract or contract extension period).

The present value will be calculated using the Company’s current cost of capital as specified in department practices.

Partial Termination

A customer who fails to maintain the minimum number of lines established by the pre-selected Line Category, will be liable for the minimum number of lines at the Line Category selected for the remainder of the term.

Classroom Line Termination

Discontinuance of Classroom Lines within the original or extended service contract period will result in termination charges calculated as the present value of the (Number of Classroom Lines Terminated) X (contracted monthly Classroom Line station feature price X 50%) X (unexpired portion (in months) of the contract or contract extension period).

The present value will be calculated using the Company’s current cost of capital as specified in department practices.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 120 SECTION 1 - Centrex Service (CS)

1. CENTREX SERVICE (cont’d)

F. Prices (cont'd)

3. Payment Plans (cont'd)

Termination Charges (cont'd)

No Termination Liability Conditions

The primary location of Centrex service is moved to a new location within the serving central office boundary at the same capacity category.

Move of a secondary location.

Election of a new capacity category and/or payment term that is equal or greater than the existing payment plan.

The primary location of Centrex is moved to a new location in a different central office serving area. The customer must elect a new capacity category and payment plan that are equal to or greater than the existing capacity category and payment plan. A payment plan minimum of 36 months must be selected.

The customer is responsible for all applicable Non Recurring installation charges (including: line connection, service order, and system establishment) for Centrex Service at the new location.

Assumption of Existing Contract

The customer shall not assign or otherwise transfer its rights or obligations under any Centrex arrangement provided under this guidebook without prior written consent of the Company. Such consent will not be unreasonably withheld or delayed. Any provisions to the contrary found elsewhere in this Guidebook are superseded.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 1 SECTION 2 - Other Centrex Services

1. DORMITORY CENTREX SERVICE

A. Description

A dormitory station is a station of a Centrex system provided in student dormitory rooms or suites (excluding those for married couples) and in common areas of a dormitory of a college, university or accredited school of nursing of a hospital. Such stations are arranged for inward and outward dialing and access to and from the attendant position of the Centrex system.

A dormitory individual line is a main station of a central office line provided as described above. Dormitory individual lines are arranged for inward and outward dialing only and, except as described under "Tie Lines" following, do not have access to and from an attendant position.

Dial Intercommunication (Intercom) Capabilities When furnished from central offices having Centrex capabilities, dial intercommunication between dormitory individual lines within the educational institution's complex may be provided.

When furnished from central offices not having Centrex capabilities, all communications, including those within the educational institution's complex, must be completed using normal dialing procedures.

Billing Arrangements Dormitory stations and dormitory individual lines will be furnished under the following arrangements regarding the responsibility for billing and collecting toll charges associated with such stations:

• Arrangement A

The college, university or hospital (hereinafter referred to as the customer) is responsible for the billing and collecting of toll charges for messages charged to dormitory stations and dormitory individual lines and the payment of all rates and charges associated with such stations and lines.

• Arrangement B

The Company is responsible for the billing and collecting of toll charges for messages charged to dormitory stations and dormitory individual lines. The customer is responsible for the payment of all other rates and charges applicable to such stations and lines and shall, at its option either:

- be responsible for the payment of toll charges billed to dormitory stations and dormitory individual lines determined by the Company to be uncollectible from the students to whom such charges are billed, or

- render reasonable assistance to the Company in the collection of such charges.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar Services Original Sheet 2 SECTION 2 - Other Centrex Services

1. DORMITORY CENTREX SERVICE (cont’d)

B. Definitions

Common Areas Common areas include, but are not limited to, hallways, study areas and recreational rooms used by all residents of the dormitory.

Dormitory Stations Dormitory rooms include rooms which are designed and furnished to afford sleeping accommodations or a combination of sleeping and study accommodations, for use by one or more students.

Dormitory Suites Dormitory suites include units which are comprised of a common study room and one or more rooms with sleeping accommodations for use by one or more students.

C. Terms and Conditions

1. Individual listings are not provided for each dormitory station.

2. Dormitory individual lines will be furnished where facilities permit.

3. Toll Restriction

• Except as described below, the Company reserves the right to restrict dormitory stations and dormitory individual lines, furnished under Billing Arrangement B, from direct outward dialing of message toll calls, at no additional charge to the customer. Where such restriction is requested by the customer in connection with dormitory stations and dormitory individual lines furnished under Billing Arrangement A, toll restriction will be furnished as set forth in Part 20, Section 5 of this Guidebook.

• Toll restriction on dormitory stations and dormitory individual lines, furnished under Billing Arrangement A or B, which are located in common areas of a dormitory shall be furnished as set forth in Part 20, Section 5 of this Guidebook.

4. Dormitory stations and dormitory individual lines will not be used as credit towards meeting the minimum monthly charges.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 3 SECTION 2 - Other Centrex Services

1. DORMITORY CENTREX SERVICE (cont’d)

D. Prices

1. Service Elements

Description Monthly Price

Dormitory Stations/1/

Billing Arrangement A Flat Rate Type I $ 10.85 Type II 12.10

Message Rate/2/ Type I 8.75 Type II 10.05

Billing Arrangement B Flat Rate Type I 12.10 Type II 13.55

Dormitory Individual Lines

Dormitory individual lines are furnished at the monthly prices for Type I Dormitory Stations, Billing Arrangement A or B, as described above.

/1/ For dormitory stations outside the basic serving area (of the primary location’s serving central office), circuit rates as specified in Part 4, Section 5 of this Guidebook also apply. /2/ No message allowance is provided with the Message Rate schedule. The charge for each outgoing local message is that specified for message rate service additional local messages in Part 4, Section 2 of this Guidebook or P.U.C.O. Tariff No. 20.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 5 - Centrex / Plexar / CentraLink Services Original Sheet 4 SECTION 2 - Other Centrex Services

1. DORMITORY CENTREX SERVICE (cont’d)

D. Prices (cont’d)

2. Other Applicable Charges and Payments

The following services are referenced in Dormitory Centrex Service.

References:

Service Reference

Message Rate Service AT&T Ohio Guidebook, Part 4, Section 2

P.U.C.O. Tariff No. 20, Part 4 Section 2

Circuit Rates AT&T Ohio Guidebook, Part 4, Section 5 Paragraph 2 – CIRCUITS

Toll Restriction AT&T Ohio Guidebook Part 20, Section 5 CENTREX SERVICE, Paragraph H - Miscellaneous Service Arrangements

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 9 - Message Toll Services Original Sheet 1 SECTION 1 - Message Telecommunications Services and Rate Schedules

1. GENERAL REGULATIONS

A. Application of Guidebook

1. This Part 9 applies to intraLATA Message Toll Telephone service furnished or made available by AT&T Ohio, hereinafter, referred to as the Company and for intraLATA or interLATA Message Toll Telephone Service furnished or to be furnished by other connecting carriers concurring in Part 9 of this Guidebook. Message Toll Telephone Service includes Message Toll Mobile Telephone and IntraLATA 1+ Service as defined in Paragraphs 3 and 4 following.

2. Where reference is made in this Guidebook to regulations, rates and charges specified in other Guidebooks of the Company, such Guidebooks as they now exist, or as they may be revised, added to or supplemented, are hereby adopted and made a part of this Guidebook.

B. Regulations

1. Definition

Message Toll Telephone Service provides for the furnishing of facilities, other than facilities for exchange service as defined in Part 4 of this Guidebook (or P.U.C.O Tariff No. 20) and other than facilities for mobile telephone service as defined later in this Section, for telephone communication between local service areas, or between a local service area and a mobile service area, or between two mobile service areas, in accordance with the regulations and system of charges specified in this Part 9.

2. Abuse or Fraudulent Use of Service

See Part 2, Section 2

3. Advance Payments

See Part 2, Section 2

4. Authorized Attachments or Connections

a. Customer-provided equipment and facilities may be attached to or connected with facilities furnished by the Company for message toll service, subject to the provisions of Part 2, Section 9 of P.U.C.O. Tariff No. 20.

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PART 9 - Message Toll Services Original Sheet 2 SECTION 1 - Message Telecommunications Services and Rate Schedules

1. GENERAL REGULATIONS (cont’d)

B. Regulations (cont’d)

4. Authorized Attachments or Connections (cont’d)

b. Where customer-provided equipment or facilities are involved in the transmission or reception, or both, of a toll call, the regulations and rates for each call are those applicable for message toll telephone customer-dialed, operator-handled or conference service, according to the connection established, as set forth in this Part 9.

5. Construction Charges

See AT&T Ohio Guidebook, Part 2, Section 5.

6. Denial and Restoration of Service

See AT&T Ohio Guidebook, Part 2, Section 2.

7. Deposits

See AT&T Ohio Guidebook, Part 2, Section 2.

8. Obligation and Liability of the Company

See AT&T Ohio Guidebook, Part 2, Section 2.

9. Limited Conversation

The Company reserves the right to limit the length of conversation when necessary in times of emergency resulting in a shortage of facilities.

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PART 9 - Message Toll Services Original Sheet 3 SECTION 1 - Message Telecommunications Services and Rate Schedules

1. GENERAL REGULATIONS (cont’d)

B. Regulations (cont’d)

10. Local Service Area

See AT&T Ohio Guidebook, Part 2, Section 1.

11. Mobile Service Area

See Mobile Telephone Service defined later in this Section.

12. Obligation of Customer

a. The calling party shall establish his identity as often as may be necessary in the course of any communication.

b. The calling party shall be solely responsible for knowing the identity of the person or persons with whom connection is made at the called station or stations.

13. Payment for Service

See AT&T Ohio Guidebook, Part 2, Section 2.

14. Priority of Service

In case a shortage of facilities exists at any time, either for temporary or protracted periods, the establishment of local and message toll telephone service shall take precedence over all other services, except as the public interest shall otherwise require.

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PART 9 - Message Toll Services Original Sheet 4 SECTION 1 - Message Telecommunications Services and Rate Schedules

1. GENERAL REGULATIONS (cont’d)

B. Regulations (cont’d)

15. Transmitting Messages

See AT&T Ohio Guidebook, Part 2, Section 2.

16. Broadcast of Recordings of Telephone Conversations

See AT&T Ohio Guidebook, Part 2, Section 2.

17. Interconnection with Miscellaneous Common Carriers

Message toll telephone service to and from mobile stations of a Miscellaneous Common Carrier (MCC), with whom the Company has made arrangements for the interchange of telephone traffic, is available at the rates set forth for two-point service in this Section.

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PART 9 - Message Toll Services Original Sheet 5 SECTION 1 - Message Telecommunications Services and Rate Schedules

1. GENERAL REGULATIONS (cont’d)

B. Regulations (cont’d)

18. Emergency Calls Offered at No Charge

Message toll telephone calls, to governmental emergency service agencies as set forth in a. following, having primary or principal responsibility with respect to the provision of emergency services to persons and property in the area from which the call is made, meeting the definition and criteria of an emergency call as set forth in b. following, are offered at no charge to customers.

a. Governmental fire fighting, police, Ohio State Highway Patrol and emergency squad service (as designated by the appropriate governmental agency) qualify as governmental emergency service agencies provided they answer emergency service calls on a personally attended (live) twenty-four (24) hour basis, 365 days a year, including holidays.

b. An emergency is an occurrence or set of circumstances in which conditions pose immediate threat to human life and/or property and necessitate that prompt action be taken. An emergency call is an originated call of short duration to a governmental emergency service agency in order to seek assistance for such an emergency.

c. If a call from a locality to an emergency agency is included in a functioning 911 system, then calls from that locality to that emergency agency will be excluded from the provisions of this Paragraph 18.

19. Use of Service

The Company will permit resale or sharing of message toll telephone service under the terms and regulations of Part 2, Section 2 and subject to the provisions of this Part 9.

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PART 9 - Message Toll Services Original Sheet 6 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE

A. Definition

Two point message toll telephone service is that of furnishing toll connections between two main stations or PBX trunk lines, or a combination thereof.

B. Classes of Service

1. Two classes of two point message toll telephone service are offered, namely, customer dialed service and operator handled service. Operator handled service is offered for station-to-station calls and person-to-person calls as described in Part 11.

2. Rates Applicable on Certain Holidays

On Christmas Day (December 25), New Year's Day (January 1), Independence Day (July 4), Thanksgiving Day and Labor Day, the rate applicable is the Evening rate, unless a lower rate would normally apply.

C. Customer-Dialed service is that service where the person originating the call, dials the telephone number desired without the assistance of the Company operator, or when facilities are not available for dial completion, gives to a Company operator the telephone number of the desired telephone, private branch exchange system, or private branch exchange station which is reached directly rather than through a private branch exchange attendant; or gives the telephone number assigned to the MCC for interconnected service.

D. Collect Call (Reversed Charge), or Calling Card

1. Subject to the provisions in E. following, station-to-station and person-to-person calls (including messenger charges, if applicable) may, upon request, be:

a. Collect, i.e., charged against the called telephone number provided the charges are accepted at the called telephone number, and completed to other than public or semi-public telephones;

b. Calling Card, i.e., calls placed using a billing arrangement by which a call may be charged to an authorized Company calling card number.

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PART 9 - Message Toll Services Original Sheet 7 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont’d)

E. Initial Minute, Additional Minutes, Service Charges and Discounts

1. Two point message toll service rates are quoted in terms of initial minute, additional minutes and service charges in the Schedule of Rates in I. following and Part 11, Section 1.

a. Initial Minute Initial minute rates are for connections of one minute or any fraction thereof.

b. Additional Minutes Additional minute rates are for each additional minute or any fraction thereof that the connection continues beyond the initial minute.

c. Customer Dialed Station-to-Station Only initial minute and additional minute rates apply.

d. Automated Calling Card Station-to-Station, Customer Dialed - Operator Assisted - Calling Card Station-to-Station, Operator Handled Station-to-Station and Person-to-Person. Initial minute and additional minute rates apply in addition to a service charge as set forth in Part 11, Section 1.

2. Discounts for the Evening and Night & Weekend reduced rate periods in the Schedule of Rates are expressed as a percent reduction of the charge calculated at the rates for initial minute and additional minutes, and are applied to that portion of the messages occurring within the rate discount periods stated in the Schedule of Rates.

a. For all classes of service the discount is applied only to the sum of the initial minute and additional minute charges. The discount is computed separately for charges in each rate period and the results are then totaled.

b. When application of the discount results in a fractional charge, the amount will be rounded down to the lower cent.

F. Timing of Messages

1. With respect to customer-dialed, automated calling card station-to- station, customer-dialed operator assisted and operator-handled station-to-station and third number billed calls, a message is considered as starting at the time telephone communication is established between the calling station and the called telephone number, MCC operator, PBX system, or PBX station reached directly rather than through a PBX attendant.

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PART 9 - Message Toll Services Original Sheet 8 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont’d)

F. Timing of Messages (cont’d)

2. With respect to operator-handled person-to-person calls, a message is considered as starting at the time telephone communication is established between the person calling and (1) the particular person called, (2) another party acceptable to the person calling, (3) the PBX station reached through a PBX attendant, or (4) the particular MCC mobile station called, or another MCC mobile station acceptable to the calling party.

3. Chargeable time ends when the calling station "hangs up" thereby releasing the network connection. If the called station "hangs up" but the calling station does not, chargeable time ends when the network connection is released either by automatic timing equipment in the telephone network or by the Company operator.

4. Chargeable time does not include time lost because of faults or defects in the service.

G. Time of Day

1. The time legally or commonly in use at the rate center of the calling station determines the rate period for customer-dialed calls.

2. In cases where a message begins in one rate period and ends in another, the discount is computed in accordance with E-2 preceding.

H. Method of Applying Rates

1. Two point message toll telephone service rates between points are based on the rate distance between rate centers.

2. Message toll telephone service rates between points in Ohio are based on the airline distance between rate centers.

3. The rate centers and central offices for the State of Ohio are arranged alphabetically by rate center and numerically by central office in Section 3 and Section 4 of this Part 9, respectively.

Under the list of rate centers the columns headed "V" and "H" contain the vertical and horizontal coordinates for each rate center.

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PART 9 - Message Toll Services Original Sheet 9 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont’d)

H. Method of Applying Rates (cont’d)

4. For the purpose of determining airline mileage, vertical and horizontal grid lines have been established across the State of Ohio. The spacing between adjacent vertical grid lines and between horizontal grid lines represents a distance of one coordinate unit. This unit is the square root of 0.1, expressed in statute miles. A vertical (V) and a horizontal (H) coordinate is computed for each rate center from its latitude and longitude location by use of appropriate map- projection equations. A pair of V-H coordinates locates a rate center, for determining airline mileage, at a particular intersection of an established vertical grid line with an established horizontal grid line. The distance between any two rate centers is the airline mileage computed as explained in Section 2 of this Part 9.

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PART 9 - Message Toll Services Original Sheet 12 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont’d)

I. Schedule of Rates (cont'd)

1. Schedule A, B and C (cont'd)

Schedule C Residence

DAY RATES EVENING RATES NIGHT & WEEKEND RATES Rate Initial Each Add’l Initial Each Add’l Initial Each Add’l Mileage 1 Minute Minute 1 Minute Minute 1 Minute Minute

1-10 $.14 $.14 $.07 $.07 $.07 $.07 11-22 .14 .14 .07 .07 .07 .07 23-55 .14 .14 .07 .07 .07 .07 56-124 .14 .14 .07 .07 .07 .07 125-End .14 .14 .07 .07 .07 .07

Operator Assisted Calls/Inmate Service

DAY RATES EVENING RATES NIGHT & WEEKEND RATES Rate Initial Each Add’l Initial Each Add’l Initial Each Add’l Mileage 1 Minute Minute 1 Minute Minute 1 Minute Minute

1-10 $.25 $.16 $.120 $.06 $.120 $.06 11-22 .28 .16 .160 .10 .160 .10 23-55 .28 .20 .160 .10 .160 .10 56-124 .28 .20 .160 .10 .160 .10 125-End .28 .20 .160 .10 .160 .10

Operator Assisted Calls – Other

DAY RATES EVENING RATES NIGHT & WEEKEND RATES Rate Initial Each Add’l Initial Each Add’l Initial Each Add’l Mileage 1 Minute Minute 1 Minute Minute 1 Minute Minute

All $.45 $.45 $.45 $.45 $.45 $.45

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PART 9 - Message Toll Services Original Sheet 13 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont'd)

I. Schedule of Rates (cont’d)

1. All Classes of Service - Schedule A, B and C (cont’d)

a. For customer dialed station-to-station calls, only initial minute and additional minute rates apply.

b. Schedule A rates apply to calls terminating in an Independent Telephone Company exchange (unless Schedule B rates are available for such Independent Telephone Company exchange).

c. Schedule B rates apply for customer-dialed station-to-station calling.

d. Schedule C is available only to customers who subscribe to Minute Line Service as set forth in Part 4, Section 2 of this Guidebook (or P.U.C.O. Tariff No. 20) and only for customer-dialed station-to-station calling.

e. Operator assisted rates apply for all operator handled/assisted calls and all sent paid coin calls and automated calling card station to station calls. Operator assisted rates/Inmate service apply to Inmate Calling Service.

f. The rates for two-point Message Toll Telephone Service (MTTS) are those which would produce aggregate revenues commensurate with the costs incurred by the Company in providing two-point MTTS service at the rates. For the purposes of this regulation, the Company's costs will be measured by its access payments where applicable, and its intrastate access rates (as set forth in its Access Service Tariff), except where the P.U.C.O. has deemed the Company's intrastate access service to be competitive for certain customers and/or geographic areas.

Schedule B is available between the exchange areas designated below:

AT&T Ohio

- All exchange areas as set forth in Part 4, Section 1 of P.U.C.O. Tariff No. 20.

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PART 9 - Message Toll Services Original Sheet 14 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont'd)

I. Schedule of Rates (cont’d)

1. All Classes of Service - Schedule A, B and C (cont’d)

f. (cont'd)

Schedule B is also available for calls originating from AT&T Ohio (all exchange areas as set forth in Part 4, Section 1 of P.U.C.O. Tariff No. 20) which terminate in an exchange of:

- GTE North, Incorporated - McClure Telephone Company - Minford Telephone Company - The New Knoxville Telephone Company - The Nova Telephone Company - Pattersonville Telephone Company - Wabash Mutual Telephone Company - United Telephone Company of Ohio - Arthur Mutual Telephone Company - Ayersville Telephone Company - Buckland Telephone Company - Farmers Mutual Telephone Company - The Fort Jennings Telephone Company - Glandorf Telephone Company, Inc. - Middle Point Home Telephone Company - Oakwood Telephone Company - The Ridgeville Telephone Company - Sherwood Mutual Telephone Association, Inc. - Vaughnsville Telephone Company, Inc. - Orwell Telephone Company - The Chillicothe Telephone Company - The Western Reserve Telephone Company - The Vanlue Telephone Company

Schedule C is available between the exchange areas designated below:

AT&T Ohio - All exchange areas as set forth in Part 4, Section 1 of P.U.C.O. Tariff No. 20

Other Telephone Companies - None

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PART 9 - Message Toll Services Original Sheet 15 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont'd)

I. Schedule of Rates (cont’d)

1. All Classes of Service - Schedule A, B and C (cont’d)

g. Schedules B and C are available only between designated exchange areas as set forth in f. preceding.

h. Schedule B and C will be furnished only where facilities and conditions permit.

i. Total charge for calls collected at Coin Telephones will be computed to the nearest multiple of $.05.

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PART 9 - Message Toll Services Original Sheet 16 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont'd)

I. Schedule of Rates (cont’d)

2. Rate Discounts and Application Periods # - Schedule A, B and C

a. Schedule A and Schedule B Automatic Volume Discounts - Residence and Non-Residence - All LATAs

Automatic volume discounts will be provided to residence and non- residence customers. The volume discount is based on the total dollar usage per month, per account, for Schedule A and Schedule B customer- dialed station-to-station calls originating from designated exchange areas as set forth below. The rate discounts are those set forth below.

Total Monthly Usage Per Month Per Account Percent Discount

$ 0.00 - $ 25.00 0 25.01 - 100.00 0 100.01 - 200.00 0 200.01 and up 0

Schedule A and Schedule B Automatic Volume Discounts are available on customer-dialed station-to-station calls originating from exchange areas designated below:

AT&T Ohio

- All exchange areas as set forth in Part 4, Section 1 of P.U.C.O. Tariff No. 20.

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PART 9 - Message Toll Services Original Sheet 17 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont'd)

I. Schedule of Rates (cont’d)

2. Rate Discounts and Application Periods # - Schedule A, B and C (cont’d)

b. Schedule A, Schedule B and Schedule C

Rate discounts during certain application periods may apply to the maximum day rates for Schedules A, B and C as set forth in Paragraph 2.I.1 proceeding.

Schedule A - Residence - All LATAs

- No time of day discount - 7:00 AM to 7:00 PM* - Monday through Friday - Evening Discount Period - 12:00 AM to 7:00 AM* and 7:00 PM to 12:00 AM* - Monday through Friday - Night and Weekend Discount Period - 12:00 AM - Saturday to 12:00 AM* - Monday (and Holidays)

Schedule A - Non-Residence - All LATAs

- No time of day discount - 7:00 AM to 7:00 PM* - Monday through Friday - Evening Discount Period - 12:00 AM to 7:00 AM* and 7:00 PM to 12:00 AM - Monday through Friday - Night and Weekend Discount Period - 12:00 AM – Saturday to 12:00 AM* - Monday (and Holidays)

Operator Assisted Calls - All LATAs

- No time of day discount - 8:00 AM to 5:00 PM* - Monday through Friday - Evening Discount Period - 5:00 PM to 11:00 PM* - Monday through Friday - Night and Weekend Discount Period - 11:00 PM to 8:00 AM* Monday through Friday (All day Saturday, Sunday and Holidays)

* To, but not including

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PART 9 - Message Toll Services Original Sheet 18 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont'd)

I. Schedule of Rates (cont’d)

2. Rate Discounts and Application Periods # - Schedule A, B and C (cont’d)

b. Schedule A, Schedule B and Schedule C (cont’d)

Rate discounts during certain application periods may apply to the maximum day rates for Schedules A, B and C as set forth in Paragraph A.10.a proceeding.

Schedule B - Residence - All LATAs

- No time of day discount - 7:00 AM to 7:00 PM* - Monday through Friday - Evening Discount Period - 12:00 AM to 7:00 AM* and 7:00 PM to 12:00 AM* - Monday through Friday - Night and Weekend Discount Period - 12:00 AM – Saturday to 12:00 AM* - Monday (and Holidays)

Schedule B - Non-Residence - All LATAs

- No time of day discount - 7:00 AM to 7:00 PM* - Monday through Friday - Evening Discount Period - 12:00 AM to 7:00 AM* and 7:00 PM to 12:00 AM* - Monday through Friday - Night and Weekend Discount Period - 12:00 AM – Saturday to 12:00 AM* - Monday (and Holidays)

Schedule C - Residence - All LATAs

- No time of day discount - 7:00 AM to 7:00 PM* - Monday through Friday - Evening Discount Period - 12:00 AM to 7:00 AM* and 7:00 PM to 12:00 AM* - Monday through Friday - Night and Weekend Discount Period - 12:00 AM – Saturday to 12:00 AM* - Monday (and Holidays)

* To, but not including

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PART 9 - Message Toll Services Original Sheet 19 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont'd)

I. Schedule of Rates (cont’d)

3. Rate Centers of Miscellaneous Common Carrier Mobile Stations

The rate center of mobile stations served by a MCC, with whom the Company has made arrangements for the interchange of telephone traffic, is the wire telephone rate center of the Company exchange in which is located the point of connection of the system of the particular MCC, used by the mobile station on the particular toll message, with the system of the Company.

4. Messages Placed by Hearing and/or Speech Impaired Persons

The regulations and rate discounts set forth in a. and b. following will apply to direct distance dialed messages placed by a hearing and/or speech impaired person.

a. Regulations

(1) For purposes of this Guidebook, the definition of impaired refers to those persons with communication impairments, including those hearing impaired, deaf, deaf/blind, or speech impaired persons who have an impairment that prevents them from communicating over the telephone without the aid of a telecommunications device for the deaf.

(2) Residential impaired customers or impaired members of a customer's household, upon written application and upon certification of their impaired status, which is evidenced by either a certificate from a physician, health care official, or state agency, or a diploma from an accredited educational institution for the impaired, are eligible to receive a discount off their message toll service rates, and, if they utilize telebraille devices, they are eligible to receive free access to local and intrastate long distance directory assistance. Additionally, TDD lines maintained by nonprofit organizations and governmental agencies, upon written application and verification that such lines are maintained for the benefit of the impaired are eligible to receive a discount off their message toll services rates.

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PART 9 - Message Toll Services Original Sheet 20 SECTION 1 - Message Telecommunications Services and Rate Schedules

2. TWO POINT SERVICE (cont'd)

I. Schedule of Rates (cont’d)

4. Messages Placed by Hearing and/or Speech Impaired Persons (cont'd)

b. Rate Discounts

Upon receipt of the appropriate application, and certification or verification, the following discounts off basic message toll service shall be made available for the benefit of the impaired:

Off the Schedule A day rates: a 40 percent discount off the intrastate, interexchange, customer-dialed, station-to-station calls occurring between 8:00 a.m. and 4:59 p.m. Monday through Friday; a 60 percent discount off the intrastate, interexchange, customer-dialed, station-to-station calls occurring between 5:00 p.m. and 10:59 p.m. Sunday through Friday, and on New Year's Day, Independence Day, Labor Day, Thanksgiving, and Christmas; and a 70 percent discount off the intrastate, interexchange, customer-dialed, station-to-station calls occurring between 11:00 p.m. and 7:59 a.m. any day, 8:00 a.m. and 4:59 p.m. Sunday, and all day Saturday; provided that, where the rates in the evening and night/weekend periods are the same, a 70 percent discount applies to both.

Off the Schedule B day rates: a 40 percent discount off the intrastate, interexchange, customer-dialed, station-to-station calls occurring between 8:00 a.m. and 4:59 p.m. Monday through Friday; and a 70 percent discount off the intrastate, interexchange, customer-dialed, station-to-station calls occurring between 5:00 p.m. and 7:59 a.m. Monday through Friday, all day Saturday, all day Sunday and on New Year's Day, Independence Day, Labor Day, Thanksgiving, and Christmas.

5. Message Toll Calls Placed through the Telephone Relay Service (TRS)

All message toll service calls placed through the Telephone Relay Service (TRS) are eligible to receive a discount off the message toll service rates. The rate discounts are the same as those set forth in paragraph 4.b. preceding. The discount shall not apply to sponsor charges associated with calls placed to pay-per-call services, such as 900, 976, or 900-Like services.

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PART 9 - Message Toll Services Original Sheet 21 SECTION 1 - Message Telecommunications Services and Rate Schedules

3. MOBILE TELEPHONE SERVICE

A. Regulations

1. General

a. Message Toll Mobile Telephone Service is a communication service through a base station between a mobile unit and a wire telephone located outside the mobile service area associated with such base station, or between two mobile units served through base stations having different rate centers.

b. Message Toll Mobile Telephone Service also includes service through a base station between a wire telephone or a mobile unit, and another unit which is authorized by the Federal Communications Commission to communicate with the base station, or between two such other units.

c. In the application of regulations and rates, units other than mobile units which are authorized by the Federal Communications Commission to communicate with a base station are considered as mobile units.

d. Message Toll Mobile Telephone Service is available to mobile units when within range of a base station through which such service is furnished, and subject to transmission, atmospheric and like limitations.

e. Calls may be filed either to a specified person or to a specified telephone.

2. Message toll mobile telephone is available through the base stations of the mobile service areas where the Company has arranged its facilities for such service.

Other carriers which concur in this Guidebook are:

Ashtabula Elyria Mansfield Bellefontaine Geneva Marion Chillicothe Hudson Medina Cincinnati Lima Orwell East Claridon Lorain

B. Rates

1. The method of determining mileage and message toll rates between the rate centers for the exchanges serving: (a) a base station and a wire telephone located outside the mobile service area, or (b) two base stations in different mobile service areas, is the same as that used in connection with message toll telephone service as set forth in Sections 1 and 3 of this Part 9.

2. The message toll rate applicable to a toll call to or from a mobile unit and a wire telephone, or another mobile unit, is determined as in B-1 preceding.

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PART 9 - Message Toll Services Original Sheet 22 SECTION 1 - Message Telecommunications Services and Rate Schedules

4. TRANSFER OF TOLL CHARGE SERVICE

A. Regulations

1. Transfer of toll charge service provides an arrangement in connection with message toll telephone service whereby a customer's patrons have the privilege of calling him without the payment of a charge for a message toll call and without having to request specific reversal of this charge.

2. This service is available only to customers having PBX service, Centrex service, or non- residence or residence individual line service.

3. A customer selects the exchanges in which he desires such service to be furnished, subject to the approval of the Company. Each exchange selected includes all of the other Company exchanges within its local service area. The Company assigns and lists in the alphabetical directory serving the local service area of each of the selected exchanges, a special telephone number designation for the use of patrons.

4. Calls for the special number are accepted only when originating at telephones located in the exchanges with which the special telephone number is associated, and only those toll calls placed by calling this special number are considered as coming within the scope of the service.

5. The customer assumes the message toll charges for all calls made to such special number.

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PART 9 - Message Toll Services Original Sheet 23 SECTION 1 - Message Telecommunications Services and Rate Schedules

4. TRANSFER OF TOLL CHARGE SERVICE (cont’d)

B. Rates and Charges

1. The customer to this service is charged the sent-paid operator handled station rate for each completed call.

2. In addition to such charges, the monthly rates included in a. and b. following apply for such service:

a. The following monthly rate applies for each telephone number designated by the customer to receive transfer to toll charge service calls

Monthly Rate USOC

Each selected exchange and all Company exchanges within its local service area $18.45 ENT

b. A primary listing for identification of transfer of toll charge service is provided in each alphabetical directory in which listings for the selected exchange and the exchanges in its local service area appear. Additional directory listings will be provided at the non-residence additional listing rate included in Part 12, Section 1.

3. Service in Exchanges of Other Telephone Companies

When transfer of toll charge service is requested in an exchange of another telephone company, the regulations, rates and charges applicable for such service under the tariff of the other telephone company apply.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 10 - Wide Area Telecommunications Services Original Sheet 1 SECTION 2 - Other 800 Services

1. SUCCESS 800 SERVICE

A. Description

Success 800 Service is the furnishing of dial type communications from stations within the LATA to a station associated with an 800 termination point within the same LATA. Success 800 will provide, where facilities are available, for the completion of 800 calls to a customer’s telephone number or Dedicated 800 Service access line. Success 800 will be arranged at the customer’s option for Common Line Termination Service or Dedicated 800 Service.

• Common Line Termination Service is a routing feature that provides for the completion of intraLATA 800 calls to a telephone number associated with the customer’s existing local service.

• Dedicated 800 Service provides for the completion of intraLATA 800 calls to the customer’s Dedicated 800 Service access line.

B. Terms and Conditions

The terms and conditions contained herein are specific to the service involved and are in addition to the General Regulations applicable to all services that are set forth in Part 2.

1. Success 800 Service can be provisioned with either an 800 or 888 service number.

2. Success 800 Service may be furnished in association with Interexchange Carriers for interLATA, intrastate and/or interstate calling. IntraLATA calls are completed by the Company and interLATA calls are completed by the Interexchange Carriers. When furnished in association with Interexchange Carriers, this service provides the customer access to a wide range of Data Base Services (see 3 following).

3. Customers may retain the same Success 800 Service telephone number when moving to another location.

4. Service is furnished subject to the availability of the service components required. The Company will (1) determine which of those components shall be used and (2) make modifications to those components at its option.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 10 - Wide Area Telecommunications Services Original Sheet 2 SECTION 2 - Other 800 Services

1. SUCCESS 800 SERVICE (cont’d)

B. Terms and Conditions (cont’d)

5. Success 800 Service is not available on semi-public, public, or COCOT service.

6. Success 800 Service provides for termination of calls only.

7. A one month minimum contract period applies to Success 800 Service.

8. Allowance for interruptions apply to each Success 800 Service as follows:

• When the Success 800 Service is interrupted for a period of less than 2 hours, no credit applies.

• When the Success 800 Service is interrupted for a period of more than 2 hours, a credit of 1/720 of the monthly charge applies for the access line for each hour or major fraction thereof.

• The credit preceding includes all credit to be applied for an interruption.

• No credit allowance will be made for the following conditions:

- non-completion of Success 800 Service messages due to busy network conditions;

- interruption of service due to customer-provided equipment or systems;

- interruption of service due to the negligence of the customer;

- interruption of service during any period in which the Company is not afforded access to the premises at which the Success 800 Service is terminated; or

- interruption of service during any period when the customer has released the Success 800 Service to the Company for maintenance purposes, or implementation of a customer order for a change in service arrangement.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 10 - Wide Area Telecommunications Services Original Sheet 3 SECTION 2 - Other 800 Services

1. SUCCESS 800 SERVICE (cont’d)

B. Terms and Conditions (cont’d)

9. Message toll telephone service furnished at a customer’s request when the customer’s Success 800 Service is interrupted, is charged for at the message toll telephone service rates specified in Part 9, Section 1 of this Guidebook.

10. Success 800 Service is available in Company exchange areas as set forth in Part 4, Section 1, of this Guidebook.

C. Prices

1. The monthly charges for Common Line Termination Service are determined as follows:

a. Determine the total number of calls for each Success 800 number.

b. Determine the equivalent hours used by applying the minimum average time requirement of 15 seconds, i.e., 1 call = 15 seconds.

c. Determine total actual hours used.

d. Determine the chargeable hours which is the greater of b. or c.

e. The usage charge is applied for Success 800 to the total hours of use over and above the first hour of use. Multiply the chargeable hours used by the usage charge (see 3 following), rounded to the highest penny.

f. Determine the charge for each Success 800 number by multiplying the monthly rate per 800 number (see 3 following) by the number of 800 numbers.

g. Determine the total charges by adding the amounts developed in e. and f. preceding.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 10 - Wide Area Telecommunications Services Original Sheet 4 SECTION 2 - Other 800 Services

1. SUCCESS 800 SERVICE (cont'd)

C. Prices (cont'd)

2. The monthly charges for Dedicated 800 Service are determined as follows:

a. Determine the total number of calls for each Dedicated 800 number.

b. Determine the equivalent hours used by applying the minimum average time requirement of 15 seconds, i.e., 1 call = 15 seconds.

c. Determine total actual hours used.

d. Determine the chargeable hours which is the greater of b. or c.

e. Multiply the chargeable hours used by the usage charge (see 3 following), rounded to the highest penny.

f. Determine the charge for each Dedicated 800 number by multiplying the monthly rate per Dedicated 800 number (see 3 following) by the number of 800 numbers.

g. Determine the total charges by adding the amounts developed in e. and f. preceding.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 10 - Wide Area Telecommunications Services Original Sheet 6 SECTION 2 - Other 800 Services

2. 800 CALLING PLAN

A. Description

800 Calling Plan (800CP) is an optional service which provides a per minute rate in lieu of the usage rates which are normally applicable to Common Line Termination and Dedicated 800 service.

B. Terms and Conditions

In addition to the regulations set forth in other sections of this Part 10, the following regulations apply to this service.

1. 800CP rates apply only to intraLATA portion of Common Line Termination and Dedicated 800 calls.

2. The 800CP rate is available 24 hours a day, seven days a week.

3. 800CP is offered on a 12- or 36-month payment plan.

4. A monthly rate applies to 800CP in addition to the per minute rate. Two different hours-of-use monthly plans, Plan 1 Fixed and Plan 2 Variable rate plans, are available which the customer may choose. The plans selected by the customer will have a Minimum Revenue Guarantee (MRG) charge for the service at the payment plan selected by the customer. The fixed plan is available to the customer whose monthly usage is predictable. The variable plan is available to the customers whose monthly usage may vary significantly from month to month.

5. Minimum Revenue Guarantee (MRG) is a guarantee by the customer to pay a minimum amount of hours-of-use each month for the 800CP.

6. The MRG applies only to service provided under a 800CP and applies to each account.

7. If in any month the actual hours-of-use for 800CP is less than the minimum hours selected by the customers, the customer will be billed the MRG as the usage charge for that month.

8. The MRG is equal to 75% of the minimum hours-of-use for the fixed rate 800CP selected by the customer or a minimum of 10 hours for 0-20 hours-of-use plan.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 10 - Wide Area Telecommunications Services Original Sheet 7 SECTION 2 - Other 800 Services

2. 800 CALLING PLAN (cont'd)

B. Terms and Conditions (cont'd)

9. The MRG is equal to 10 hours for the variable rate 800CP.

10. At the completion of the 12 or 36 month payment plan, the rates for Custom and Dedicated 800 service will apply, as applicable.

11. Customers may upgrade to a higher hours-of-use plan as long as the term of the new hours of use plan is equal to or longer than the current plan.

12. Customers may downgrade to a lower hours-of-use plan as long as the term of the new hours- of-use plan is equal to or longer than the time remaining with their current plan.

13. Customers who terminate their 12 or 36 month plan prior to the expiration of the term of the plan selected will be required to pay 50% of the full MRG and the monthly rate for the number of months remaining in the payment plan.

14. The monthly rates associated with Dedicated 800 Service are in addition to the 800CP monthly usage rates.

15. In the event of damage to terminating service location, or other emergencies, Custom and Dedicated 800 service with 3 year 800CP will be re-established at a new location if the following applies:

• Customer must place on file with the Company a predefined plan that the Company may activate. This plan describes alternate routing, specialized area of service, and carrier selection/allocation as described in the Ameritech Operating Companies Access Service Tariff, F.C.C. No. 2, Section 6.4.1. Customer is responsible for choice of, and maintenance of relationships with alternate carriers (if applicable).

• Predefined plan will be activated at customer's request when customer and Company determine that an emergency situation may exist.

• Rates and charges for re-establishing Custom and Dedicated 800 service and associated features may not apply.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 10 - Wide Area Telecommunications Services Original Sheet 8 SECTION 2 - Other 800 Services

2. 800 CALLING PLAN (cont'd)

C. Prices

The monthly usage charges apply to service provided under a 800CP based upon the hours of use and the 800CP selected by the customer.

If the 800CP usage is below the monthly MRG requirement in any given month, the full monthly MRG will apply.

1. Payment Plans

Monthly Price Term Payment Plan Description Hours of Use 12 Month 36 Month

Plan 1

Fixed Rate, monthly rate per account $20.00 $10.00

- Usage Rates, per minute 0 - 20 0.132 0.128 20.1 - 50 0.129 0.121 50.1 - 100 0.122 0.117 100.1 - 250 0.118 0.110 over 250 0.111 0.103 Plan 2

- Variable Rate, monthly rate per account N/A 20.00

- Usage Rates, per minute 0 - 20 N/A 0.138 20.1 - 50 N/A 0.132 50.1 - 100 N/A 0.129 100.1 - 250 N/A 0.122 over 250 N/A 0.118

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 10 - Wide Area Telecommunications Services Original Sheet 9 SECTION 2 - Other 800 Services

3. 800 DATA BASE SERVICES

A. Description

The description for the 800 Data Base Services are as provided in Ameritech Operating Companies Access Service Tariff, F.C.C. No. 2, Section 6.4.1 as it now exists and may be revised.

The following 800 Data Base Services may be provided on an intraLATA basis in conjunction with Custom 800 Service.

• Time of Day Routing - Allows Custom 800 Service calls to be routed to a different location, at the customer's request, based on the customer's time of day needs.

• Day of Week Routing - Allows Custom 800 Service calls to be terminated to a different location, at the customer's request, based on the day of the week.

• Specific Dates Routing - Allows Custom 800 Service calls to be terminated to a different location based, at the customer's request, on a specific date.

• Originating Location Routing - Allows Custom 800 Service calls originating in a predefined NPA, NXX, or 10-digit telephone number to be routed where facilities permit, at the customer's request, to a given destination while other calls complete to another destination.

• Specialized Area of Service Routing - Allows a Custom 800 Service customer to define a geographic location from which to accept Custom 800 Service calls, that is defined as other than a single 10-digit telephone number, NXX, NPA or the entire LATA.

B. Prices

The minimum rates and charges for the 800 Data Base Services are the rates specified in the Ameritech Operating Companies Access Service Tariff, F.C.C. No. 2, Section 6.9.4 as it now exists and may be revised.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 10 - Wide Area Telecommunications Services Original Sheet 1 SECTION 3 - 800 Directory Assistance Service

1. 800 DIRECTORY ASSISTANCE SERVICE

A. Description

800 Directory Assistance Service gives the Success 800 Service customers the option of having their 800 Service number listed in the directory assistance data base. This service allows callers, who access a directory assistance bureau, by dialing 1-800-555-1212, to obtain the 800 service number of a particular customer if that customer is an 800 Directory Assistance Service subscriber and if the area where the caller is located is served by the business customer's 800 service number.

B. Terms and Conditions

1. This service is available 24 hours a day, 7 days a week to callers located within the continental United States, Alaska, Hawaii, Puerto Rico and the U.S. Virgin Islands. There is no service provider charge to the caller for this service.

2. Success 800 customers have the option of listing their 800 service number in either a nationwide database or an Ohio specific database, depending on the service to which the customer has subscribed.

3. 800 Directory Assistance Service is available only in those situations where AT&T Ohio is the Responsible Organization, as described in the Ameritech Operating Companies Access Service Tariff, F.C.C. No. 2, Section 6.4.2.

4. Abuse of service as defined in Ameritech Operating Companies Access Service Tariff, F.C.C. No. 2, Section 9.2.3, may cause this service to be terminated.

C. Prices

The charges for a fractional part of a month will be billed at a rate equal to one-thirtieth (1/30th) of the monthly recurring charges times the actual number of days service was furnished.

Credit will be issued to the customer if the listing is unavailable to the Directory Assistance Bureau for a period of 1 day (24 continuous hours) or more and will be credited at the rate of 1/30th of the monthly recurring charge for each full day that the service listing is not available.

1. Service Elements

Description /Billing Code/ Monthly Price

Home State (Ohio) DA Listing /8DLSX/ $ 5.00

National DA Listing /8DLNX/ 20.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 1 SECTION 1 - Operator Service Charges

1. OPERATOR - HANDLED SERVICE

Operator-Handled service is that service requested of a Company operator, by the person (a non- residential customer) originating a call, which is in addition to the customer-dialed service specified in Part 9, Section 1 of this Guidebook.

A. Station-to-Station calls are those calls where the person originating the call specifies to a Company operator a particular telephone number to be reached.

B. Person-to-Person calls are those calls where the person originating the call specifies to a Company operator a particular person to be reached, a particular mobile station to be reached through a MCC operator, or a particular station, department or office to be reached through a private branch exchange attendant.

1. When, after the telephone, MCC operator, or private branch exchange system called has been reached and while the connection remains established, the person originating the call requests or agrees to talk to any person other than the person specified, or to any other person or mobile station to be reached through a MCC, or to any other station, department or office to be reached through a private branch exchange attendant, the call is charged for as person-to- person.

2. Where the person originating the call wishes arrangements made in advance with a particular party or station for the establishment of a connection at a specified time (appointment call), the call is charged for as person-to-person.

3. When at the request of the calling party the Company employs a messenger or other means to bring the called party to a telephone (messenger call), the call is charged for as person-to- person, and in addition to the charges for the message, a charge is made for the exact amount expended, if any, for messenger service.

C. Third Number Billed calls are those calls where the person originating the call specifies to a Company operator to bill the call to an authorized station, as determined by the Company, other than the station originating the call, or the station where the call is terminated.

D. Service Charges

A service charge applies to each automated calling card station-to-station and customer dialed - operator assisted - calling card station-to-station call and to each operator handled station-to- station, third number billed and person-to-person call. This charge is added to the initial minute and additional minute charges. Discounts do not apply to the service charge.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 2 SECTION 1 - Operator Service Charges

1. OPERATOR - HANDLED SERVICE (cont’d)

D. Service Charges (cont’d)

Description Charge

1. Automated Calling Card Station-to-Station $ .95

2. Customer Dialed - Operator Assisted - Calling Card Station-to- Station 1.95

3. Operator Handled - Station-to-Station 1.75

4. Operator Handled - Person-to-Person 2.75

5. Operator Handled - Third Number Billed 2.25

6. Inmate Collect - Station-to-Station 2.75

E. Local Non-Coin Messages

1. The appropriate service charge as set forth in D. preceding is applicable whenever the assistance of a Company operator is required to complete the local call and the calling party requests collect, billed to a third telephone number, billed to a calling card number or person- to-person special handling. The service charge is in addition to the appropriate local message charge.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 1 SECTION 2 - Directory Assistance (DA) Service

1. DIRECTORY ASSISTANCE SERVICE - LOCAL

A. Regulations

1. The Company will offer directory assistance service to non-residential customers on an interim basis, subject to P.U.C.O alteration or cancellation.

2. The regulations and charges in this Paragraph 1. apply to calls placed to directory assistance to obtain telephone numbers of services located within the home NPA or LATA. Customers desiring more than one listing must inform the operator at the beginning of the call that they want multiple listings. The number of such telephone numbers furnished on each call shall be limited to ten. Each listing request is subject to the rates listed in 1.B.1 following.

Local Directory Assistance (DA) consists of providing listing information (address and published telephone number, or an indication of "non-published status") for the home NPA and/or the local/intraLATA serving area to callers who dial 411, 1/0+411, 555-1212, or 1/0-NPA-555-1212 or other dialing arrangements.

3. Except as otherwise specified in c.(2)(c) following, directory assistance calls from the following are not subject to the regulations and charges in this Paragraph 1.

a. Services furnished to hospitals and skilled nursing homes.

For the purpose of this paragraph, the term "skilled nursing homes" applies to those nursing homes that provide around-the-clock professional nursing care.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 2 SECTION 2 - Directory Assistance (DA) Service

1. DIRECTORY ASSISTANCE SERVICE - LOCAL (cont’d)

A. Regulations (cont’d)

b. Services furnished to the handicapped as follows:

(1) Impaired persons

(a) For purposes of this Guidebook, the definition of impaired refers to those persons with communication impairments, including those hearing impaired, deaf, deaf/blind, and speech impaired persons who have an impairment that prevents them from communicating over the telephone without the aid of a telecommunications device for the deaf.

(b) Residential impaired customers or impaired members of a customers' household, upon written application and upon certification of their impaired status, which is evidenced by either a certificate from a physician, health care official, or state agency, or a diploma from an accredited educational institution for the impaired, may receive a discount off their message toll service rates, and, if they utilize telebraille devices, they may receive free access to local and intrastate long distance directory assistance. Additionally, TDD lines maintained by nonprofit organizations and governmental agencies, upon written application and verification that such lines are maintained for the benefit of the impaired may receive a discount off their message toll services rates.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 3 SECTION 2 - Directory Assistance (DA) Service

1. DIRECTORY ASSISTANCE SERVICE - LOCAL (cont’d)

A. Regulations (cont'd)

3. (cont'd)

b. Services furnished to the handicapped as follows: (cont'd)

(2) Visual or other physical handicapped

(a) One residence service designated by a handicapped person who is unable to use a directory due to a visual or other physical handicap. Such person must make application to the Company for exemption and will be required to provide suitable proof of handicap. Such application shall be established by the following procedures:

A letter to the Company from a professional familiar with the person's visual or physical impairment stating that the person qualifies for the exemption; or

The filling out of a prepared form made available by the Company by a professional familiar with the person's visual or physical impairment.

(b) Exemption may be extended to one non-residence service, in lieu of a residence service where the handicapped person subscribes only to non-residence service which is located in the residence of said person.

(c) In addition to the exemption provided in (a) above, exemption also may be extended to any telephone service used by the handicapped person when he is away from his residence. Such exemption is provided by means of special arrangements which must be made in advance with the Company. This exemption provides for the first 100 calls per month at no charge. Each additional call per month is charged for at the rate set forth in B-2 following.

(d) For the purpose of this paragraph, a visual handicap may be defined as follows:

Visual acuity of 20/60 or worse with best refractive correction with best eye, or

Visual field of 20 or less in diameter.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 4 SECTION 2 - Directory Assistance (DA) Service

1. DIRECTORY ASSISTANCE SERVICE - LOCAL (cont’d)

B. Charges

Directory assistance calls will be charged for as follows:

Non-Residence Description Charge

1. Where customer direct dials directory assistance number, per listing request $1.75

2. Where customer requests operator assistance to place a call to Directory Assistance, the surcharge is shown in Part 11, Section 1 of this Guidebook as appropriate, is applicable in addition to the charge listed above.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 5 SECTION 2 - Directory Assistance (DA) Service

2. DIRECTORY ASSISTANCE SERVICE - TOLL

Directory Assistance Service shall not be construed to be a part of Message Toll Telephone Service for the purpose of concurrences by other companies as set forth in Part 9, Section 1 of this Guidebook except such other companies as shall have a Directory Assistance Service charging plan approved by The Public Utilities Commission of Ohio.

A. Regulations

1. The Company will offer Directory Assistance Service to non-residential customers on an interim basis, subject to P.U.C.O. alteration or cancellation.

2. The regulations and rates set forth in this Paragraph 2. apply to calls placed to directory assistance for the purpose of obtaining telephone numbers of services located outside the local service area but within the same numbering plan area. Customers desiring more than one listing must inform the operator at the beginning of the call that they want multiple listings. The number of such telephone numbers furnished on each call shall be limited to ten. Each listing request is subject to the rates listed in 2.B.1. following.

a. A numbering plan area, as set forth above, is the territory which shares a common area code.

3. Except as otherwise specified in (c)-(2)-(c) following, the following are not subject to the regulations and rates set forth in this Paragraph 2:

a. Service furnished to hospitals and skilled nursing homes.

For the purpose of this paragraph, the term "skilled nursing homes" applies to those nursing homes that provide around-the-clock professional nursing care.

b. Services furnished to the handicapped.

(1) Impaired persons

(a) For purposes of this Guidebook, the definition of impaired refers to those persons with communication impairments, including those hearing impaired, deaf, deaf/blind, or speech impaired persons who have an impairment that prevents them from communicating over the telephone without the aid of a telecommunications device for the deaf.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 6 SECTION 2 - Directory Assistance (DA) Service

2. DIRECTORY ASSISTANCE SERVICE - TOLL (cont’d)

A. Regulations (cont'd)

3. (cont'd)

c. Services furnished to the handicapped. (cont'd)

(1) Impaired persons (cont'd)

(b) Residential impaired customers or impaired members of a customers' household, upon written application and upon certification of their impaired status, which is evidenced by either a certificate from a physician, health care official, or state agency, or a diploma from an accredited educational institution for the impaired, are eligible to receive a discount off their message toll service rates, and, if they utilize telebraille devices, they are eligible to receive free access to local and intrastate long distance directory assistance. Additionally, TDD lines maintained by nonprofit organizations and governmental agencies, upon written application and verification that such lines are maintained for the benefit of the impaired are eligible to receive a discount off their message toll services rates.

(2) Visual or other physical handicapped

(a) One residence service may be designated by a handicapped person who is unable to use a directory due to a visual or other physical handicap. Such person must make application to the Company for exemption and will be required to provide suitable proof of handicap. Such application shall be established by the following procedures:

A letter to the Company from a professional familiar with the person's visual or physical impairment stating that the person qualifies for the exemption; or

The filling out of a prepared form made available by the Company by a professional familiar with the person's visual or physical impairment.

(b) Exemption may be extended to one non-residence service, in lieu of a residence service where the handicapped person subscribes only to non-residence service which is located in the residence of said person.

(c) In addition to the exemption provided in (i) preceding, exemption also may be extended to any telephone service used by the handicapped person when he is away from his residence. Such exemption is provided by means of special arrangements which must be made in advance with the Company. This exemption provides for the first 100 calls per month at no charge. Each additional call per month is charged for at the rate set forth in A-2-a (2) following.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 7 SECTION 2 - Directory Assistance (DA) Service

2. DIRECTORY ASSISTANCE SERVICE - TOLL (cont’d)

A. Regulations (cont'd)

3. (cont'd)

c. Services furnished to the handicapped. (cont'd)

(2) Visual or other physical handicapped (cont'd)

(d) For the purpose of this paragraph, a visual handicap may be defined as follows:

Visual acuity of 20/60 or worse with best refractive correction with best eye, or

Visual field of 20 or less in diameter.

B. Rates

Non-Residence Description Charge

1. Directory assistance calls

a. Where customer direct dials directory assistance number, per listing request $1.75

b. Where customer requests operator assistance to place a call to Directory Assistance, the surcharge as shown in Part 11, Section 1 of this Guidebook as appropriate, is applicable in addition to the charge listed above.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 8 SECTION 2 - Directory Assistance (DA) Service

3. NATIONAL DIRECTORY ASSISTANCE CALL SERVICE

A. Description

1. National Directory Assistance Call Service consists of providing listed telephone numbers to non-residential callers for locations outside the LATA and Home NPA for residential, business and government accounts throughout the 50 states. Information Call Completion is not offered with National Directory Assistance Call Service. The service is available where facilities permit.

2. Telephone calls by customers for telephone number listings will be answered and numbers given by an Audio Response Unit (ARU) or an operator.

3. Customers desiring more than one listing must inform the operator at the beginning of the call that they want multiple listings. A maximum of ten requested telephone numbers will be provided for each National Directory Assistance call. Each listing request is subject to the rates listed in 3.B.1. following.

4. The PRICES in Paragraph B. following apply for all calls to National Directory Assistance transported solely by the Company to a National Directory Assistance operator.

5. The Company shall not be liable for any errors or omissions, whether arising through negligence or otherwise, in the information furnished; and the customer shall indemnify and save the Company harmless against all claims (including costs and reasonable attorneys' fees) that may arise from the use of such information.

6. No exemptions apply for National Directory Assistance Call Service.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 9 SECTION 2 - Directory Assistance (DA) Service

3. NATIONAL DIRECTORY ASSISTANCE CALL SERVICE (cont’d)

B. Prices

Rates Direct Dialed Alternate Description Calls Billed Calls

1. National Directory Assistance, per listing request $1.99 $1.99

2. Where a customer requests operator assistance to place a call to National Directory Assistance, the surcharge as shown in Part 11, Section 1 of this Guidebook is applicable in addition to the price specified in Paragraph B.1. above.

3. National Directory Assistance is not provided on WATS service, Feature Group A service, Alternate Billed Collect-Inmate (Operator Assisted Calls from a correctional institution), or to customers that have Toll Restriction.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 10 SECTION 2 - Directory Assistance (DA) Service

4. BUSINESS CATEGORY SEARCH

A. Description

1. Business Category Search will provide non-residential customers with the ability to request business listings for a specified category of businesses, when they do not know the name of the business they are seeking. Requested listings can be searched for in the local calling area, as described in Part 4, Sections 1 and 2, of this Guidebook and/or P.U.C.O. Tariff No. 20, or outside the customer's home numbering plan area (HNPA), as described in Part 9, Section 4 of this Guidebook. Information Call Completion is offered with Business Category Search for listings within the customer’s home numbering plan area. The service is available where facilities permit.

2. Telephone calls by customers for telephone number listings will be answered and numbers given by an Audio Response Unit (ARU) or an operator.

3. Customers desiring more than one listing must inform the operator at the beginning of the call that they want multiple listings. A maximum of ten requested telephone numbers will be provided for each Business Category Search call. Each listing request is subject to the rates listed in 4.B.1 following.

4. The Prices in Paragraph B. following apply for all calls for Business Category Search.

5. The Company shall not be liable for any errors or omissions, whether arising through negligence or otherwise, in the information furnished; and the customer shall indemnify and save the Company harmless against all claims (including costs and reasonable attorneys' fees) that may arise from the use of such information.

6. No exemptions apply for Business Category Search.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 11 SECTION 2 - Directory Assistance (DA) Service

4. BUSINESS CATEGORY SEARCH (cont’d)

B. Prices

Rates Direct Dialed Alternate Description Calls Billed Calls

1. Business Category Search, per listing request $1.99 $1.99

2. Where a customer requests operator assistance to place a call for Business Category Search, the surcharge as shown in Part 11, Section 1, of this Guidebook is applicable in addition to the price specified in Paragraph B.1. above.

3. Business Category Search is not provided on WATS service, Feature Group A service, Alternate Billed Collect-Inmate (Operator Assisted Calls from a correctional institution), or to customers that have Toll Restriction.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 1 SECTION 3 - Directory Assistance Call Completion Service

1. INFORMATION CALL COMPLETION SERVICE

A. General

Information Call Completion (ICC) Service will provide a non-residential customer, who has accessed the local information/directory assistance operator or has received a number from the Audio Response Unit (ARU), the option of having their call completed either by an operator or by depressing a specific digit on a Touch-Tone telephone.

B. Regulations

1. The calling number and the number requested to be dialed must be in the same LATA or the local calling area.

2. In addition to the call completion charge, normal existing directory assistance charges will apply and any toll charges for calls completed to telephone numbers outside of the customer's local calling area will also apply.

3. Only the second provided directory-assisted telephone number will be completed if two Directory Assistance requests are made by the customer during the same call.

4. If a call is not completed, no charge for the service is applicable. Only the appropriate charge for the Directory Assistance call will apply.

5. Mobile Telephone Service and Customer-Owned, Coin-Operated Telephone (COCOT) Service customers will only be eligible for ICC service if an alternate billing option is used, i.e., calling card, billed-to-third party, collect and person-to-person special handling.

6. Cellular Phone Users will only be eligible for ICC service if an alternate billing option is used, i.e., calling card, billed-to-third party, collect and person-to-person special handling, or if the carrier allows for sent-paid billing.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 1 SECTION 4 - Other Operator Services

1. VERIFICATION AND INTERRUPT SERVICE

A. Non-residential customers may obtain assistance in verifying if a called line is in use, or in interrupting a conversation in progress, by calling the Company operator.

B. Verification and interrupt service is furnished where facilities permit. Person-to-person service is not offered and collect billing is not permitted.

C. Verification and interrupt service is furnished to coin and non-coin customers.

D. Centrex-CU numbers may not be verified or interrupted.

E. Application of Charges

1. A verification charge is applicable each time a customer requests a Company operator to determine whether or not a line is in use.

2. An interrupt charge is applicable each time a customer requests a Company operator to interrupt a conversation or to verify that a line is in use and interrupt a conversation.

3. No verification or interrupt charge will apply if the Company operator determines that there is trouble on the line, or if the requesting customer identifies that the call is from an Official Public Emergency Agency. An Official Public Emergency Agency is a government agency which is operated by the Federal, State or local government and has the capability and legal authority to provide prompt and direct aid to the public in emergency situations.

4. An interrupt charge applies whenever the operator interrupts the conversation even though one or both of the parties interrupted refuses to terminate the conversation in progress.

5. If the number verified is not in use, or as a result of interrupt the line is cleared, and, at the calling party's request, the operator completes the call, the applicable service charges apply as specified in Part 11, Section 1 of this Guidebook in addition to the verification or interrupt charges.

6. Time of day discounts and unused allowances, e.g., Measured Service and Message Service, will not be applied against Verification and Interrupt charges.

F. Charges

Description Non-Residence

Verification $6.00

Interrupt 6.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 2 SECTION 4 - Other Operator Services

2. TEMPORARY INTERCEPTION

A. At the request of a non-residential customer and where equipment arrangements will permit, any grade of non-residence service will be intercepted temporarily without termination of contract. Calling persons will be informed that the service is being temporarily intercepted at the request of the customer and, if desired by the customer, the telephone number at which he may be reached or the telephone number at which his calls will be received during the period of interception.

B. The liability of the Company for damages arising when it fails to inform or makes errors in advising calling persons of the telephone number at which the customer may be reached, or the telephone number at which his calls are to be received during the period of interception, shall in no event exceed an amount equivalent to the interception charge for the month during which the failures or errors occur. The maximum amount for continuing damages shall not exceed an amount equivalent to the interception charges for the entire period of interception.

C. The service is furnished subject to receipt of the customer's request in sufficient time to permit the Company to effect the necessary arrangements.

D. No outward or inward service is contemplated during the period interception.

E. Rates

1. Regular service charges are applicable during the period of interception.

2. In addition to the regular service charges, for each period of interception, the following interception charges apply:

Monthly Rate USOC

Non-residence service...... $15.85 TYS

3. The minimum interception charge for each period of interception shall be a charge equal to one month at the monthly rate specified in 2. preceding, as appropriate.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 11 - Operator Services Original Sheet 3 SECTION 4 - Other Operator Services

3. INTERCEPT REFERRAL EXTENSION SERVICE

A. General

Intercept Extension service is provided to business customers for the purpose of notifying calling parties about changes in the status of the business customer’s access line when the access line has been called.

1. Intercept Referral Extension Service is provided as facilities permit at the discretion of the Company.

2. Intercept Referral Extension Service is available only for business line access customers and is not available on Centrex service.

3. Intercept Referral Extension Service is available for a maximum of nine months following the initial period of regular intercept referral service. Subsequent to the initial three months, Intercept Referral Extension Service will be charged on a per month basis. Upon transfer, telephone number change or disconnection of the business access line, the customer will specify the number of months which the Intercept Referral Extension Service is required.

B. Rates and Charges

No service charge will be applied for Intercept Referral Extension Service when requested on the same order for a disconnection of service, telephone number change or a transfer to another address. If a subsequent request is made to add or change the duration of the Intercept Referral Extension Service, a subsequent service order charge is applicable.

Nonrecurring Monthly Description /Billing Code/ Charge Rate

Intercept Referral Extension Service Per account intercepted /1/ $6.00

/1/ A service order charge as specified in Part 3, Section 1 of this Guidebook is applicable to add or change the length of months requested for the Intercept Extension Service. A change request is not available for services which have been terminated.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 1 SECTION 1 - General

A. APPLICATION OF GUIDEBOOK

This section contains general regulations applicable to Dedicated Communications Service (Private Line Service) furnished by the Company (herein after referred to as “the Company”) for intraLATA communications between specified customer (the word “customer”, as used in this Guidebook is used to refer to the customer, authorized user, or joint user of the service) locations and are in addition to other regulations, Nonrecurring Charges and Prices specified elsewhere in this Guidebook. When reference is made in this Guidebook to regulations and prices specified elsewhere in the Company’s Guidebook, such regulations and prices as they now exist, or as they may be revised, added to or supplemented, are hereby adopted and made a part of this Guidebook.

1. Private line services are provided between specified customer locations twenty-four hours daily, seven days per week, with a minimum service period of one month (from date of installation) except as otherwise specifically stated. For Guidebook purposes, every month is considered to have thirty days.

2. Wherever facilities are provided jointly by the Company and one or more other telephone companies, the regulations, and prices of such other telephone companies apply for the equipment and facilities furnished by them for use in connection with the interexchange service provided by the Company.

When the Company and one or more other telephone companies involved in provisioning these services operate under a meet point multiple billing arrangement, the circuits provided by the other telephone companies shall be multiple billed. Under the meet point multiple billing arrangement, the other telephone companies involved shall bill at their tariffed rates for the portion of the circuits located in their company territory.

3. Connections involving private line service may not be made except as authorized in the Connections Section of P.U.C.O. Tariff No. 20 and as described in Part 68 of the Federal Communications Commission’s Rules and Regulations.

4. Private line services are provided between two or more points, either:

a. all points within the Company's local exchange areas; or

b. one or more points within the Company's local exchange areas and one or more points outside of the Company's local exchange areas.

5. Private line services are subject to the interLATA traffic restriction for as long as that restriction remains in effect.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 2 SECTION 1 - General

A. APPLICATION OF GUIDEBOOK (cont’d)

6. Each Company wire center has been assigned to a rate zone. A list of the rate zone assignments can be found in Paragraph X of this Section (Rate Zone Wire Center Assignment). For services in Section 3 with rate elements subject to zone pricing, the following conditions apply:

• Local Distribution Channel, Channel Mileage and Channel Mileage Termination rates are dependent upon the zone assignment of the serving wire center.

• Channel Mileage that is computed between wire centers in different rate zones will be assessed the rates in the higher rate zone.

• Multiplexing rates will be determined by the location of the multiplexing arrangement.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 3 SECTION 1 - General

B. LIMITATIONS

1. When it is necessary to use interexchange private lines of another telephone company in order to furnish a private line service, such private line service will be furnished only if satisfactory arrangements can be made with such other telephone company.

2. All prices listed in this Guidebook provide for the furnishing of the specified service subject to the availability of suitable facilities and equipment or where the construction of such facilities or placement of equipment does not involve unusual costs. When the revenue to be derived from the service does not warrant the Company assuming the unusual costs, the customer may be required to pay all or a portion of such costs and/or to contract for the service for a sufficient period of time to warrant the construction, depending on the circumstances in each case.

3. Any equipment offered herein which has grandfathered status under the FCC’s Registration Program is offered and provided only to the extent of available stock, unless otherwise specified elsewhere in this Guidebook (or P.U.C.O. Tariff No. 20). The Company will maintain the item of equipment only as long as it is repairable. When the Company determines the equipment is no longer repairable, the customer must forego further use of the equipment which will be removed by the Company.

4. For items of equipment, other than those with grandfathered status, which are no longer offered to new customers but which are continued in service for existing customers at the location or locations specified in the regulations for these items, the Company cannot assure that it will continue to maintain these items for more than one year beyond the date when the equipment can no longer be provided to new customers. After one year, the Company will maintain the item of equipment only as long as it is repairable. When the Company determines the equipment is no longer repairable, the customer must forego further use of the equipment which will be removed by the Company.

5. Customers may use customer provided equipment to derive additional channels from a channel furnished by the Company as long as the channel so used remains within the specifications of the channel type provided to the customer. However, the Company does not guarantee the suitability of the channel provided by it for such subdivision into additional channels by the customer.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 4 SECTION 1 - General

C. PROVISION OF SERVICE

1. All of the facilities used in providing a private line service shall be provided by the Company or by the Company and connecting telephone companies, except as stated elsewhere in this Guidebook. Such facilities will be provided up to the point of minimum penetration at the customer’s premises. Premises wiring beyond the point of minimum penetration will be provided by the customer in accordance with FCC regulations. Terminal equipment or communications systems for use with private line services will be customer provided.

2. All use of Company provided facilities not otherwise defined in this Guidebook (or P.U.C.O. Tariff No. 20) or FCC regulations remain for the exclusive use of the Company in the provision of its service.

3. Transmission parameters for private line services will be measured at the network interface. Transmission parameters for sub-voice and voice grade channels are defined for a single point of termination on the customers premises. While multiple terminations of a channel beyond the network interface (utilizing inside wire) are permitted, transmission parameters for a channel so terminated cannot be assured. Equipment that regenerates circuit transmission for multiple terminations and/or longer than inside wiring design standards will be provided by the customer in accordance with FCC regulations.

4. If the Company provided interface must, for regulatory or other Company reasons, be located closer to the customer’s equipment than the point of minimum penetration, inside wire between the point of minimum penetration and the interface must meet appropriate Company standards, otherwise, transmission parameters will not be supported beyond the point of minimum penetration.

5. Facilities furnished by the Company on the premises of a customer are the property of the Company.

6. Equipment located on the Company’s premises used to provide a private line service will be provided by the Company.

7. Special equipment and service arrangements for which provision is not otherwise made in this Guidebook will be furnished whenever practicable, if in connection with and not detrimental to any of the services furnished by the Company under this Guidebook, at charges based on cost when such special service arrangements are to meet the unique requirements of a small number of customers.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 5 SECTION 1 - General

D. UNLAWFUL USE OF SERVICE

1. Termination of service shall take place after reasonable notice is provided the customer, or as ordered by the Court.

2. If communications facilities have been physically disconnected by law enforcement officials at the premises where located, and if there is not presented to the Company the written findings of a judge, then upon written request of the subscriber, and agreement to pay restoral of service charges and other applicable Service charges, the Company shall promptly restore such service.

3. Service shall not be used to:

• Make any oral or written comment, request, suggestion or proposal, or to transmit any non- verbal material, which is obscene, lewd, lascivious, filthy or indecent

• Impersonate another person with fraudulent or malicious intent

• Call another person so frequently or at such times of day or in any other manner so as to annoy, abuse, threaten, or harass such other person

• Transmit a message, to locate a person, or to give or obtain information without payment of the charges applicable to such use.

4. No device shall be used by a customer with the service or facilities of the Company for the purpose of avoiding payment of the applicable charge.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 6 SECTION 1 - General

E. LIABILITIES OF THE COMPANY

1. The Company’s failure to provide or maintain services under this Guidebook shall be excused by circumstances beyond the Company’s reasonable control, subject to the Credit Allowance for a service interruption as set forth elsewhere in this Guidebook.

2. The Company does not undertake to transmit messages, but furnishes the use of its facilities for its customers to communicate.

3. The Company is not liable for any defacement of or damage to the premises or property of a customer resulting from the existence of facilities furnished by the Company on the premises, or the installation or removal of such facilities, unless such defacement or damage is the result of negligence of the Company.

4. When facilities or equipment of another telephone company are used in establishing connections to points not reached by the facilities or equipment of the Company, the Company is not liable for any act or omission of the other company.

5. The Company shall not be liable for damage arising out of mistakes, omissions, interruptions, delays, errors or defects in transmission or other injury, including but not limited to injuries to persons or property from voltages or currents transmitted over the service of the Company;

• Caused by customer-provided equipment (except where a contributing cause is the malfunctioning of a Company-provided connecting arrangement, in the event the liability of the Company shall not exceed an amount equal to a proportional amount of the Company billing for the period of service during which such mistake, omission, interruption, delay, error, defect in transmission or injury occurs), or

• Not prevented by Customer Provided Equipment (CPE), but which would have been prevented had Company-provided equipment been used. No other liability shall in any case attach to the Company.

6. Approval of the above language by the PUCO does not constitute a determination by the Commission that the limitation of liability made a condition of service by the Company should be upheld by a court of law. Approval by the Commission merely recognizes that since it is a court’s responsibility to adjudicate damage claims, it is also the court’s responsibility to determine the validity of the limitation clause.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 7 SECTION 1 - General

F. INDEMNIFICATION

1. The Company shall be indemnified and saved harmless, including costs and reasonable attorney’s fees, by the customer or customers against:

• Claims for libel, slander, or the infringement of copyright arising directly or indirectly from material transmitted over the facilities or the use thereof;

• Against claims for infringement of patents arising from combining with, or using in connection with, facilities furnished by the Company, apparatus and systems of the customer;

• Against all other claims arising out of any act or omission of the customer, in connection with the facilities provided by the Company;

• Any liability arising out of the use of broadcast television material picked up and retransmitted to an educational television system;

• Any and all losses from damage to the customer’s facilities or equipment attached or connected to facilities furnished by the Company.

2. The Company will refuse to provide, maintain or restore service at outdoor locations unless the customer agrees in writing to indemnify and save harmless the Company from and against any and all loss or damage that may result to facilities or equipment furnished by the Company at such locations.

3. The Company does not guarantee nor make any warranty with respect to services provided by it for use in an explosive atmosphere. The customer indemnifies and holds the Company harmless from any and all loss, claims, demands, suits, or other action, or any liability whatsoever, whether suffered, made, instituted or asserted by the customer or by any other party or persons, for any personal injury to or death of any person or persons, and for any loss, damage or destruction of property, whether owned by the customer or others, caused or claimed to have been caused directly or indirectly by the installation, operation, failure to operate, maintenance, removal, presence, condition, location or use of said service so provided. The Company may require each customer to sign an agreement for the furnishing of such service as a condition precedent to the furnishing of such service.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 8 SECTION 1 - General

G. INSTALLATION, MAINTENANCE AND REPAIR

1. The Company assumes all ordinary expense of installation, maintenance and repair of the facilities on the network side of the network interface for the service provided. The customer may not install, rearrange, disconnect, remove or attempt to repair or permit others to install, rearrange, disconnect, remove or attempt to repair any equipment installed by the Company on the network side of the network interface except upon written consent of the Company.

2. The customer agrees to notify the Company promptly in writing whenever alterations or new construction on premises owned or leased by the customer, or an authorized user, will necessitate changes in the Company’s equipment, and the customer agrees to pay the Company’s current charges for such changes. The Company will move the equipment to any point where the Company furnishes similar service accessible with its facilities upon written order, provided the customer agrees to pay the Company’s current charges.

3. Special protection may be required for private line services furnished at power generating stations, substations, or other locations which may be subject to high ground potential during fault conditions. When the Company determines that such protective equipment is required, it will be furnished, installed and maintained by the Company at the appropriate prices as set forth elsewhere in this Guidebook (or P.U.C.O. Tariff No. 20).

4. Nonrecurring Charges specified in this Guidebook contemplate work being performed by the Company during usual working hours on normal working days. When, at the specific request of a customer or applicant for service, work is performed at other times, either for the convenience of the customer or applicant for service or for other reasons not under control of the Company, the expense incurred by the Company in excess of the normal expense of such work, when performed during usual working hours on normal working days, may be billed to the customer or applicant for service, in addition to the charges otherwise applicable.

5. When a customer requests that Company personnel be available at a customers premises on a “stand-by” basis (e.g. at sporting events, one-time entertainment events, etc.), time, including travel time and overtime premiums (as appropriate), will be charged to the customer in addition to any other appropriate prices applicable to the service ordered.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 9 SECTION 1 - General

H. CUSTOMER OBLIGATIONS AND RESPONSIBILITIES

1. Customer-provided equipment must operate within the transmission parameters of the channel facilities furnished.

2. If a customer’s use of service interferes unreasonably with the service of other customers, the interfering customer will be required to take service in sufficient quantity or of a different class or grade.

3. The customer must fully compensate the Company for damages to Company provided facilities caused by negligence or willful act of the customer. The customer must also reimburse the Company for any loss through theft of facilities, equipment or apparatus on the customer’s premises.

4. The customer is responsible for making all arrangements for the necessary authorizations for the off-the-air pickup and use for retransmission of television program material.

5. The customer shall provide a route and support structure suitable to the Company for the entrance facility.

6. When a customer is so located that it is necessary for the Company to obtain right-of-way to furnish and maintain service, the customer may be required to pay the cost (including rental) of securing and retaining such right-of-way.

7. The Company’s obligation to furnish service, or to continue to furnish service, is dependent on its ability to obtain, retain and maintain suitable rights and facilities and to provide for installation and maintenance of the necessary poles, rooftop antennas and associated mounting structures and facilities, lines, circuits and equipment.

8. When, at the request of the customer, the Company rearranges, moves or replaces existing facilities or equipment within a building or entering a building, the customer will pay all associated costs.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 10 SECTION 1 - General

H. CUSTOMER OBLIGATIONS AND RESPONSIBILITIES (cont’d)

9. When and where Company equipment and facilities are installed on a customers premises and the equipment and facilities requires floor and/or wall space, the customer shall provide, maintain and bear the expense of the following:

• Floor and wall space and any other structure or housing required for the installation, operation, maintenance, and removal of Company equipment and facilities.

• An environment to include HVAC and power as outlined in paragraph 10 below.

• Company access to such spaces for installing, testing, inspecting, operating, repairing or removing Company equipment, facilities and services.

• When required, conduit and all other support structure in buildings to meet applicable building and electrical codes.

• When required, the penetration of floors and walls and the fire stopping and sealing of pathways through floors and walls. The work must be performed in compliance with all applicable federal and state building, electrical, and safety codes.

• The path and connection from the buildings main electrical ground and the Company protector.

• Provide and maintain a suitable space, housing, and environment to protect equipment and facilities from damage, harm, or interference from the surrounding environment, weather or other hazards during installation, operation, maintenance, and removal of equipment and facilities.

10. When and where Company equipment is installed on a customers premises and the equipment requires power for its operation, the customer is responsible for providing a suitable supply of commercial power, including convenience outlets and lighting, at no cost to the Company.

11. See Special Construction Charges for additional obligations and responsibilities of the customer.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 11 SECTION 1 - General

I. ADVANCE PAYMENTS AND DEPOSITS

1. The Company reserves the right to require applicants to make a deposit, to be held by the Company as a guarantee of payment of charges. The fact that a deposit has been made in no way relieves the applicant or customer from complying with Company regulations as to advance payments and the prompt payment of bills on presentation. When the contract is terminated such amount of the deposit as is necessary will be applied to any indebtedness to the Company for outstanding charges. At the option of the Company, such deposit may be refunded or credited to the customer at any time prior to termination of contract.

2. The Company may at its sole discretion, in lieu of a deposit, accept a bond, in form and amount satisfactory to the Company and with sureties satisfactory to the Company, or accept other arrangements to safeguard its interests such as a guarantee by an individual or by a corporation having power under its charter to act as a guarantor.

3. In case of a cash deposit, simple interest at the rate of 3% annum will be paid for the period during which the deposit is held by the Company.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 12 SECTION 1 - General

J. CANCELLATION OF APPLICATION FOR SERVICE

When an applicant cancels an order for service, other than those provided by Special Construction:

1. Prior to the issuance of an order, no charges apply.

2. After the issuance of an order, Nonrecurring Charges apply as follows:

• Canceled before the Record Issue Date (RID), the Administrative Charge applies.

• Canceled on or after the RID, but before the Plant Test Date (PTD), the Administrative Charge and the Design and Central Office Connection Charge apply.

• Canceled on or after the PTD, the Administrative Charge, Design and Central Office Connection Charge and Customer Connection Charge apply.

When an applicant cancels an order for service involving Special Construction:

1. Prior to the issuance of an order, no charges apply.

2. After the issuance of an order, but prior to the start of construction, all Nonrecurring Charges associated with the design of the Special Construction and the Administrative Charge will apply.

3. After construction has begun:

• If there is another requirement for the specially constructed facilities, the Administrative Charge, Design and Central Office Connection Charge, and the Customer Connection Charge will apply.

• If there is no other use for the specially constructed facilities, a charge equal to all the costs incurred in the special construction (including overheads), less net salvage, applies in addition to the Administrative Charge, Design and Central Office Connection Charge, and the Customer Connection Charge.

4. Installation or special construction of facilities for a customer starts when the Company incurs any expense in connection therewith which would not otherwise have been incurred and the customer has advised the Company to proceed with the installation or special construction.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 13 SECTION 1 - General

K. DISCONNECTION OR REFUSAL OF SERVICE

The Company may disconnect or refuse service for any of the reasons stated below:

1. If the applicant is indebted to the Company for a service previously rendered or furnished.

2. Upon objection to the furnishing of service made by or on behalf of any governmental authority.

3. For failure to provide access to Company-owned service or equipment, after the Company has made a written request to do so.

4. For violation of or noncompliance with any Company rules or regulations for which the Company is authorized by this Guidebook to deny or refuse service.

5. Without notice in the event that the customer’s use of equipment adversely affects the Company’s service to others.

6. Without notice in the event that the customer’s use of equipment will endanger public safety or health.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 14 SECTION 1 - General

L. TERMINATION OF SERVICE

1. Service is considered terminated by discontinuance or relocation prior to the expiration of the minimum service period, except where otherwise stated in this Guidebook.

2. If specific termination charges are defined in the Guidebook, these charges apply.

3. If no specific termination charges are defined, full service charges apply for the unexpired portion of the minimum service period.

4. Service may be terminated after expiration of the minimum service period upon notice being given to the Company a reasonable period in advance and upon agreement to pay the charges due to the date of termination of service.

5. For multiple like items, termination charges will be applied treating the last like item installed as the first item removed.

6. Except as provided above, no charges are applied for removal of service or equipment.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 15 SECTION 1 - General

M. ASSIGNMENT OR TRANSFER OF SERVICE

The service of a customer, or any rights associated therewith, may be assigned or transferred, with the customers consent, only under the following conditions:

1. There is no interruption or relocation of the service.

2. The assignee or transferee assumes all outstanding indebtedness for the service and the unexpired portion of the service period originally contracted for.

3. All regulations and conditions contained in this Guidebook shall apply to the assignee or transferee.

N. CHANGE IN SERVICE ARRANGEMENT

If a modification of use causes a service to be re-designated from an Exchange to an Access status, such a change is allowed without incurring Termination Charges, given the following conditions are met:

- There must be no change in service locations - The new Term Payment Plan (TPP) must be equal to or longer than the remaining time in the existing TPP

Upgrades are permitted subject to underlying product Guidebooks.

Nonrecurring charges associated with the service under the new jurisdiction may apply.

O. RESALE

The Company will permit resale or sharing of private line service under the terms and conditions of this Guidebook. The Customer of Record shall be liable for all charges, and the Company shall not be responsible for the allocation of usage or charges for resold/shared service. In the event of the failure of the Customer of Record to pay all charges by the due date, the users shall be jointly and severally liable for such charges.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 16 SECTION 1 - General

P. MILEAGE CALCULATIONS USING V&H COORDINATES

Mileage measurements (Channel Mileage) for purposes of Dedicated Communications Services (digital) is defined as the distance between two serving wire centers, a serving wire center and a Carrier Point of Presence (POP), or a serving wire center and either a Company hub, multiplexing location or ring node. In order to calculate mileage measurements, a mathematical process using V&H Coordinates is used.

V & H Coordinates

V&H grid lines have been established across the state. The spacing between adjacent vertical grid lines represents a distance of one coordinate unit. This unit is the square root of 0.1 (approximately 0.3), expressed in statute miles. A vertical (V) and horizontal (H) coordinate is computed for each wire center from its latitude and longitude location by use of appropriate map projection equations. A pair of V&H coordinates locates a wire center at the intersection of its vertical grid line with its horizontal grid line.

The National Exchange Carrier Association (NECA) Tariff F.C.C. No. 4 lists the V&H coordinates for all state wire centers.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 17 SECTION 1 - General

P. MILEAGE CALCULATIONS USING V&H COORDINATES (cont’d)

Calculation When computing mileage distances (Channel Mileage) for Dedicated Communications Services, the following process should be used:

Example Step 1 V H Obtain the V&H coordinates for each wire center (from NECA #4). Wire Center #1 5574 2543 Wire Center #2 5495 2508

Step 2 V H Calculate the difference between the V coordinates of Difference 79 the two wire centers.

Calculate the difference between the H coordinates of Difference 35 the two wire centers.

NOTE: The difference is always obtained by subtracting the smaller coordinate from the larger coordinate. Step 3 V H Square the V and H difference found in STEP 2. Square 6,241 1,225

Step 4 Add the squares of the V and H differences found in Add 7,466 STEP 3.

Step 5 Divide the sum of the squares determined in STEP 4 by Divide by 10 746.6 10.

Step 6 Obtain the square root of the result obtained in STEP 5. Square Root 27.3

Step 7 The result obtained in STEP 6 is the distance in miles Distance 28 miles between wire centers. Since fractional miles are considered full miles, round the result up to the next integer value.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 18 SECTION 1 - General

Q. SHARED NETWORK ARRANGEMENT

A Shared Network Arrangement is a service offering that enables a customer (the Service User) to connect subtending services to the higher speed multiplexed service of another customer (the Host Subscriber).

The following terms and conditions apply to Shared Network Arrangements:

1. The Company will maintain separate records and billing for each customer. Each customer will be billed for those elements associated with their own portion of the service configuration. Under no circumstances will the charges for individual elements be split.

2. Under the Shared Network Arrangement, the Company may share record information with the Host Subscriber pertaining to the services of other users of the shared network. Such disclosure will be under the sole discretion of the Company as is necessary to perform billing reconciliation and/or other functions required in connection with maintaining account records.

3. When establishing service under a Shared Network Arrangement, the Host Subscriber and the Service User must coordinate with each other the design, testing and maintenance of the service; additionally, the Service User must provide to the Company the Connecting Facility Assignment (CFA) and the High Capacity Billing Account Number (HBAN) of the Host Subscriber.

4. Upon receipt of a letter of authorization for a Shared Network Arrangement from the Host Subscriber, the Company will undertake to connect the Service User’s circuits to the Host Subscriber’s service and to establish and maintain separate billing for the Service User’s portion of the service. In the event that the Service User is requesting a subtending circuit from a Host Shared Network Arrangement with a third-party host (a cascading Shared Network Arrangement), the Service User must also obtain and provide to the Company the appropriate HBAN and CFA of the third-party host, in order to identify the complete circuit for purposes of maintenance and testing continuity.

5. Each customer entering into a Shared Network Arrangement is solely responsible to the Company for charges associated with that customer’s portion of the shared network. Disconnection of service by the Host Subscriber does not relieve another user of the network of any obligation to pay access charges associated with the portion of the shared network to which that user subscribes. Billing for services and facilities will continue until a disconnect request from the Service User has been received by the Company. The Host Subscriber is solely responsible for notifying the connecting Service User in the event of disconnection of the host service which affects that portion of the shared network service to which the Service User has subscribed.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 19 SECTION 1 - General

Q. SHARED NETWORK ARRANGEMENT (cont’d)

6. For administrative purposes, one “arrangement” under the Shared Network Arrangement offering shall be limited to the agreement between one Host Subscriber and one Service User permitting the Service User to connect a specified number of subtending circuits to one specified multiplexer on the host’s service. Agreements between one Host Subscriber and two (or three, etc.) Service Users shall be deemed to comprise two (or three, etc. respectively) separate “Arrangements”. However, an agreement to expand the scope of an existing Arrangement by subsequently increasing the number of subtending circuits on the same multiplexer shall not constitute a new or separate “Arrangement”.

7. Shared Use as described elsewhere in this Guidebook will apply to both the Host Subscriber’s and Service User’s portion of the service for which they are billed. Any reconciliation of shared use must be negotiated between the Host Subscribers and Service Users.

8. A Shared Network Arrangement shall be established between a Host Subscriber and a Service User upon the completion of the service order for the first circuit(s) in the arrangement. No Shared Network Arrangement shall be deemed to be in effect until at least one subtending circuit has been installed for the Service User. A Shared Network Arrangement shall be deemed canceled when the last subtending circuit has been disconnected.

9. When a Service User places an order that requests the connection of a subtending circuit(s) to a Host Subscriber’s multiplexed service, a Processing Charge will be applied to each service connection requested. The Processing Charge applies in addition to all other applicable charges.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 20 SECTION 1 - General

R. TERM PAYMENT PLANS

The following services are offered under a Term Payment Plan (TPP):

Base Rate Service/1/ 128, 256 and 384 Service DS1 Service DS3 Service OC-n Point-to-Point Service OC-n Dedicated Ring Service ProtectPath® Service Fiber Distributed Data Interface (FDDI) Service LAN Interconnect Service (ALIS) Central Office Multiplexing and Cross Connect Services Network Reconfiguration Service (NRS) GigaMAN® Service FibreMAN® Service Multi-service Optical Network Ring (MON Ring) Service

During the length of the selected TPP, monthly prices for service ordered under the plan will automatically change (increase or decrease) as Company-initiated price changes become effective. However, under no circumstances will any price change cause the monthly price for the service to exceed the price that was in effect at the beginning of the selected TPP term.

/1/ Effective December 1, 2006, Term Payment Plans (TPP) for Base Rate Service are grandfathered. Existing customers may remain on their current plan until the existing term expires. Upon expiration, customers will be charged the current monthly rates.

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PART 15 - Dedicated Telecommunications Services Original Sheet 21 SECTION 1 - General

R. TERM PAYMENT PLANS (cont’d)

In addition to other regulations of this Guidebook, the following terms and conditions apply to Term Payment Plans:

Term Payment Plans for Base Rate Service will not be offered on circuits that are single billed with a location in an Independent Telephone Company territory.

Term Payment Plans for 128, 256, 384, and DS1 Service will not be offered on circuits that have both locations in an Independent Telephone Company territory.

For DS3 Service, only a twelve-month Term Payment Plan will be offered on circuits that have both locations in an Independent Telephone Company territory.

When the telephone companies involved in provisioning service change to meet point multiple billing, the TPP rates associated with the portion of the circuit in the Independent Telephone Company territory become null and void. Under the meet point multiple billing arrangement, the Independent Telephone Company(s) involved will provide billing at their tariffed rates for the portion of the circuit in their territory. The TPP for the AT&T Ohio portion of the circuit will remain intact. A 60-day advance notice will be sent to customers prior to a change from a single bill to multiple bills.

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PART 15 - Dedicated Telecommunications Services Original Sheet 22 SECTION 1 - General

R. TERM PAYMENT PLANS (cont'd)

In the event the billing is changed to meet point multiple billing and the customer chooses not to keep the TPP in effect, the customer can terminate the TPP and termination liability charges will not apply.

1. With the written permission of the Company, the obligation to pay the TPP charges may be assumed by another customer if the service has not been terminated and if the other customer intends to continue using the service at the present location and actually continues such use. Such assumption of service does not relieve or discharge the original customer from remaining jointly or severally liable with the transferee for any and all obligations existing at the time of the transfer.

2. During a customer's TPP term, conversion may be made to a new TPP term of the same or different length or to a higher speed service so long as any product-specific upgrade criteria are met (refer to the applicable product Guidebook), if the expiration date for the new service or TPP term is beyond the end of the original TPP term. The new TPP becomes effective upon execution. Customers may also change from a Month-to-Month Payment Plan to an TPP. No credit for months under the previous TPP or under the month-to-month plan may be transferred to the new TPP. The customer incurs no liability for the remaining months on the original TPP, since the change is not considered a termination of service. Nonrecurring Charges, as appropriate, will apply for changes to the customer’s service. For example, if a customer converts to a higher speed service, nonrecurring charges will apply. The prices applicable for the new term are those currently in effect for new customers.

3. If a customer requests additional Primary Termination(s) and/or a Central Office Multiplexer Termination be added to an existing TPP, there are two methods available:

• The addition(s) to the circuit may be added at the month-to-month or monthly extension price (if applicable) currently in effect, or • The addition(s) will be governed by the original TPP date of the circuit and will be billed at the then current price for the TPP items being added for the TPP term length the customer originally specified.

A customer may combine both methods on the same circuit.

4. If a modification of use causes a service to be re-designated to an Access Service status, the remaining length of the contract continues to apply.

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PART 15 - Dedicated Telecommunications Services Original Sheet 23 SECTION 1 - General

R. TERM PAYMENT PLANS (cont'd)

5. During a customer's DS3 Service TPP term/1/, conversion may be made from one DS3 Service or DS3 Service package to a higher speed service, if the expiration date for the new TPP term is beyond the end of the original TPP term. The new TPP becomes effective upon execution. The customer incurs no liability for the remaining-months on the original TPP, since the change is not considered a termination of service. Nonrecurring Charges, as appropriate, will apply for changes to the customer's service.

Renewal Options

1. Six months prior to completion of the customer TPP term, any term then available under the TPP may be selected at the prices currently in effect for new customers at the time of the renewal. The Customer will be charged the then current price for the renewal payment period upon execution of the new TPP.

Term Payment Plan Renewal Program Option

The Term Payment Plan (TPP) Renewal Program offers DS1 and DS3 customers who are within six months of completing an existing 36-month or 60-month TPP term, a one-time renewal credit in return for committing to a new TPP term of either 36 months or 60 months. The amount of the one-time credit will be dependent upon the customer’s existing (completed) TPP term and the length of the new/renewed TPP term.

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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PART 15 - Dedicated Telecommunications Services Original Sheet 24 SECTION 1 - General

R. TERM PAYMENT PLANS (cont'd)

Renewal Options (cont'd)

1. (cont’d)

Term Payment Plan Renewal Program Option (cont’d)

To qualify for the TPP Renewal Program, customers must complete their existing 36-month or 60-month term and commit to a consecutive 36-month or 60-month TPP term beginning with the expiration of their existing 36-month or 60-month TPP. Customers who wish to participate in the TPP Renewal Program will receive a renewal credit for each DS1 Local Distribution Channel and each DS3 Channel Mileage Termination, Channel Mileage, and Multiplexing service component renewed under the TPP Renewal Program. The renewal credit will be applied to the customer’s monthly bill beginning with the renewed TPP term.

The TPP Renewal Program is an optional offering. Customers may choose not to renew their qualifying services under the program, in which case no credit will be provided. Customers who choose to renew qualifying services under the program will receive a credit applied automatically to their monthly bill in the amount of the monthly charges for the qualifying service until the renewal credit amount is exhausted. The renewal credit will be applied to the account under which the renewed service is billed at the time the renewed TPP term begins.

Except as provided for in Moves, customers terminating a service component that was renewed under the TPP Renewal Program prior to the expiration of the renewed TPP term shall be liable for a TPP renewal termination charge. The charge will be equal to the renewal credit originally provided plus the dollar difference between the current TPP rate for a TPP term that could have been completed during the time the renewed service was actually in service, or the monthly rate for services in place less than 12 months, and the customer’s current TPP rates for each month the renewed service was provided.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 25 SECTION 1 - General

R. TERM PAYMENT PLANS (cont'd)

Renewal Options (cont'd)

1. (cont’d)

Term Payment Plan Renewal Program Option (cont’d)

The following renewal credits will apply to existing 36-month TPP service components renewed under the TPP Renewal Program.

TPP Renewal Credit Service Component 36 Months 60 Months

DS1 Local Distribution Channel $170.00 $330.00 DS3 to DS1 Multiplexer 490.00 970.00 DS3 Channel Mileage (per mile) 40.00 80.00 DS3 Channel Mileage Termination 270.00 540.00

The following renewal credits will apply to existing 60-month TPP service components renewed under the TPP Renewal Program.

TPP Renewal Credit Service Component 36 Months 60 Months

DS1 Local Distribution Channel $270.00 $ 550.00 DS3 to DS1 Multiplexer 810.00 1,620.00 DS3 Channel Mileage (per mile) 70.00 130.00 DS3 Channel Mileage Termination 450.00 900.00

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R. TERM PAYMENT PLANS (cont'd)

Renewal Options (cont'd)

2. If the customer does not elect a new TPP after completion of a TPP and does not request discontinuance of service, service will be continued at the monthly price then currently in effect for the Month-to-Month Payment Plan (or monthly extension price for DS3 Service, OC-n Point-to-Point Service, ProtectPath® Service, GigaMAN® Service, FibreMAN® Service, or Multi-service Optical Network Ring (MON Ring) Service). At a later date, the customer may elect any TPP option currently in effect for new customers.

3. Monthly extension prices for DS3 Service, OC-n Point-to-Point Service, ProtectPath Service, GigaMAN® Service, FibreMAN® Service, or Multi-service Optical Network Ring (MON Ring) Service will apply only after a customer has completed a TPP term.

4. The monthly TPP prices applicable for the new term are those currently in effect for new customers.

5. There are no Nonrecurring Charges associates with renewing a TPP.

Moves

During a TPP term a customer may move one Local Distribution Channel (LDC) of a Base Rate/1/, 128, 256 and 384, DS1 or DS3 Service to another location in the same LATA and keep the TPP in force, provided no lapse in service occurs. Nonrecurring Charges, as appropriate, will apply.

NRS

During a customer's TPP term, a customer may elect to include DS3, DS1, 128, 256 and 384 or a Base Rate Service into the customer's Network Reconfiguration Service (NRS) database. The customer may opt to convert to a new TPP term of the same or different length or to continue the current TPP term to the original expiration date. If the expiration date for the new TPP term is beyond the end of the original TPP term, termination charges for the original term will not apply. Adding an existing service to the customer's Network Reconfiguration Service database requires that all nonrecurring charges applicable to the installation of the service apply.

/1/ Effective December 1, 2006, Term Payment Plans (TPP) for Base Rate Service are grandfathered. Existing customers may remain on their current plan until the existing term expires. Upon expiration, customers will be charged the current monthly rates.

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PART 15 - Dedicated Telecommunications Services Original Sheet 27 SECTION 1 - General

R. TERM PAYMENT PLANS (cont'd)

Termination Charges

Customers requesting termination of the service (or a leg(s) of a multi point circuit) provided under the Term Payment Plan (TPP) prior to the expiration of TPP term will remain liable for payment of a termination charge not to exceed the remaining obligation under the TPP. The termination charge shall become due and payable in its entirety immediately upon any such termination and will be calculated as a percentage of the monthly TPP charges for the remainder of the term as indicated below.

For service term agreements which become effective on or after May 3, 2004, customer termination liability for cancellation of service shall be equal to:

• Any unpaid Special Construction or nonrecurring charges (excluding any waived charges); plus • Fifty percent (50%) of all recurring charges for the remaining months of the customer’s term

1. The termination charge for all TPP terms subscribed to prior to November 10, 1997, discontinued prior to the expiration of the selected TPP term except for:

• DS3 Service Packages/1/ - termination charges - see 3. following

• OC-n Dedicated Ring Service - termination charges - see 4. following

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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PART 15 - Dedicated Telecommunications Services Original Sheet 28 SECTION 1 - General

R. TERM PAYMENT PLANS (cont'd)

Termination Charges (cont'd)

1. (cont'd)

• Fiber Distributed Data Interface (FDDI) Service and LAN Interconnect Service (ALIS) - termination charges - see 6. following

• Multi service Optical Network Ring (MON Ring) Service and GigaMAN® Service - termination charges - see 7. following

will be calculated as follows:

The dollar difference between the current monthly TPP price for the TPP term that could have been completed during the time the service was actually in service or the monthly price for service in place less than 12 months and the customer’s current TPP price for each month the service was provided.

Example:

A customer subscribed to a 60-month TPP term and disconnected service during the 37th month. This customer’s termination charge would be:

(36-month TPP price - 60-month TPP price) x 37 = Termination Charge

The 36-month TPP term could have been completed during the months the service was actually in service.

All recurring rate termination charges will be based on the TPP prices in effect at the time of termination.

2. The termination charge for all TPP terms subscribed to after November 10, 1997, but prior to May 3, 2004, discontinued prior to the expiration of the selected TPP term except for:

• DS1 and DS3 TPP terms subscribed to under the TPP Renewal Program - As described in Renewal Options (preceding)

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R. TERM PAYMENT PLANS (cont'd)

Termination Charges (cont’d)

2. (cont'd)

• DS3 Service Packages/1/ - termination charges – see 3. following • ProtectPath Service - termination charges – see 5. following • Fiber Distributed Data Interface (FDDI) Service and LAN Interconnect Service (ALIS) - termination charges – see 6. following • Multi service Optical Network Ring (MON Ring) Service, GigaMAN® Service and FibreMAN® Service - termination charges – see 7. following • OC-n Dedicated Ring Service - termination charges – see 4. following

will be calculated as the lesser of Method A or Method B as follows:

METHOD A:

• Service discontinued in first through 11th month

(40% x 12-month TPP rate x [12 – number of months in service] + [12-month TPP rate - subscribed to TPP rate] x number of months in service) = Termination Charge

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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R. TERM PAYMENT PLANS (cont'd)

Termination Charges (cont’d)

2. (cont'd)

METHOD A (cont'd)

Example:

A customer subscribed to a 36-month TPP term and disconnected service at the end of the fifth month. This customer’s termination charge would be:

(40% x 12-month TPP rate x [12 - 5 months] + [12-month TPP rate 36-month TPP rate] x 5 months) = Termination Charge

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

• Service discontinued in 12th through 60th month

The dollar difference between the current TPP price for the TPP term that could have been completed during the time the service was actually in service and the customer’s current TPP price for each month the service was provided.

Example:

A customer subscribed to a 60-month TPP term and disconnected service during the 37th month. This customer’s termination charge would be:

(36-month TPP price - 60-month TPP price) x 37 = Termination Charge

The 36-month TPP term could have been completed during the months the service was actually in service.

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

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R. TERM PAYMENT PLANS (cont'd)

Termination Charges (cont’d)

2. (cont'd)

METHOD B

The total monthly payments remaining under the Term Payment Plan.

(Number of subscribed to TPP months - number of months in service) x (subscribed to TPP price) = Termination Charge

Example:

A customer subscribed to a 36-month TPP term and disconnected service at the end of the 34th month. This customer’s termination charge would be:

(36 - 34 months) x (36-month TPP price) = Termination Charge

3. DS3 Service Packages

• Service discontinued in the first through 11th month

((.85 x 12-month TPP price) x (12 - number of months in service)) + ((12-month TPP price - subscribed to TPP price) x number of months in service) = Termination Charge

Example:

A customer subscribed to a 36-month TPP term and disconnected service at the end of the fifth month. This customer’s termination charge would be:

((.85 x 12-month TPP price) x (12 - 5 months)) + ((12-month TPP price - 36-month TPP price) x 5 months) = Termination Charge

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

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R. TERM PAYMENT PLANS (cont'd)

Termination Charges (cont’d)

3. (cont'd)

• Service discontinued in the 12th through 60th month

The dollar difference between the current TPP price for the TPP term that could have been completed during the time the service was actually in service and the customer’s current TPP price for each month the service was provided.

Example:

A customer subscribed to a 60-month TPP term and disconnected service during the 37th month. This customer’s termination charge would be:

(36-month TPP price - 60-month TPP price) x 37 = Termination Charge

The 36-month TPP term could have been completed during the months the service was actually in service.

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

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R. TERM PAYMENT PLANS (cont'd)

Termination Charges (cont’d)

4. For OC-n Dedicated Ring Service purchased prior to October 20, 2000, Termination Charges will apply for the Node only as described below by paying a percentage of the monthly charges for the remainder of the term as indicated below:

Terms in Months Termination Percentage 36 75% 60 60%

Effective October 20, 2000, Termination Charges for new OC-n Dedicated Ring Service customers shall not exceed:

All waived and/or unpaid nonrecurring charges, plus;

50% of all recurring charges for the balance of the customer's term.

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

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R. TERM PAYMENT PLANS (cont'd)

Termination Charges (cont’d)

5. Termination Charges for ProtectPath Service are determined as follows:

• For a 36-month Term Payment Plan (TPP) terminated prior to the 36th month, the customer shall be liable for payment of the monthly charges for the remaining months of the TPP.

• For a 60-month TPP terminated prior to the 36th month, the customers termination liability will be computed as follows:

The dollar difference between the 36-month TPP price and the 60-month TPP price times the number of months that the service was actually in service, plus, 36 minus the number of months the service was actually in service times the 36-month price.

Example:

A customer subscribed to a 60-month TPP term and disconnected service during the 21st month. This customer’s termination charge would be:

((36-month TPP price - 60-month TPP price) x 21 months) + ((36 - 21 months) x 36-month TPP price) = Termination Charge

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

• For a 60-month TPP terminated after the 36th month, the customers termination liability will be computed as follows:

The dollar difference between the 36-month TPP price and the 60-month TPP price times the number of months the service was actually in service.

Example:

A customer subscribed to a 60-month TPP term and disconnected service during the 41st month. This customer’s termination charge would be:

(36-month TPP price - 60-month TPP price) x 41 = Termination Charge

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

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R. TERM PAYMENT PLANS (cont'd)

Termination Charges (cont’d)

6. Termination charges for Fiber Distributed Data Interface (FDDI) Service and LAN Interconnect Service (ALIS) will be calculated as follows:

• Service discontinued in first through 35th month

((40% x 36-month TPP price) x (36 - number of months in service)) + ((36-month TPP price - subscribed to TPP price) x number of months in service) = Termination Charge

Example:

A customer subscribed to a 60-month TPP term and disconnected service at the end of the fifth month. This customer’s termination charge would be:

((40% x 36-month TPP price) x (36 - 5 months)) + ((36-month TPP price - 60-month TPP price) x 5 months) = Termination Charge

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

• Service discontinued in the 36th through 84th month

The dollar difference between the current TPP price for the TPP term that could have been completed during the time the service was actually in service and the customer’s current TPP price for each month the service was provided.

Example:

A customer subscribed to a 60-month TPP term and disconnected service during the 37th month. This customer’s termination charge would be:

(36-month TPP price - 60-month TPP price) x 37 = Termination Charge

The 36-month TPP term could have been completed during the months the service was actually in service.

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

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PART 15 - Dedicated Telecommunications Services Original Sheet 36 SECTION 1 - General

R. TERM PAYMENT PLANS (cont'd)

Termination Charges (cont'd)

7. In addition to any special construction liabilities, customer termination liability for cancellation of a Multi-service Optical Network Ring (MON Ring) Service, GigaMAN® Service and FibreMAN® Service shall be equal to:

- All waived and/or unpaid nonrecurring charges; plus

- Fifty (50) percent of all recurring charges for the balance of the customer's term.

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R. TERM PAYMENT PLANS (cont’d)

Single Payment Option (SPO)

The customer may, at any time under a Term Payment Plan (TPP), elect to prepay all of the remaining monthly payments in a single payment. The prepayment in no way constitutes a purchase and the Company retains full ownership of all equipment and facilities covered by the prepayment.

The following conditions apply:

1. Customers who prepay will have an allowance applied. The prepayment allowance is calculated based upon the number of monthly payments remaining (excluding any taxes) using the loan amortization method at an annual percentage rate of 9.9% for a 12 month TPP, of 10.30% for a 36 month TPP, or 10.90% for a 60 month TPP. Once the amount is calculated, all applicable taxes are applied.

2. Customers may extend the length of their current Term Payment Plan. A new allowance will be calculated utilizing the method described above for the new Term Payment Plan selected. A credit for any unused portion of the previously prepaid allowance will be credited to their bill.

3. Once a customer elects to prepay, the prepayment amount is not adjusted for Company initiated price changes that occur during the period for which the customer has prepaid.

4. Customers who prematurely disconnect will have Termination Charges deducted from the prepaid amount and any balance credited to their bill.

5. Monthly recurring charges will cease for the remainder of the Term Payment Plan period. If the service is not disconnected at the end of the Term Payment Plan, the prices will revert to the monthly price currently in effect, or if no monthly or monthly extension price exists, the TPP price for the shortest contract length period applies.

6. Customer’s selection of the prepayment option does not alter any other conditions of the service contract.

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S. CREDIT ALLOWANCES

1. Installation of Service

A failure to meet the installation interval service date, as specified in Ameritech Interval Guide Publication AM TR-MKT-000066, will result in a customer credit of the nonrecurring charges (consisting of Administrative Charge, Design and Central Office Connection Charge and Customer Connection Charge only) billed to the customer for that service, where the responsibility for the failure is solely that of the Company.

This guarantee does not apply to any installation involving the following circumstances:

• The customer requests expedited orders. • Other Telephone Companies are involved in the service installation. • The customer’s premises is inaccessible. • The customer changes interface requirements. • The customer is not ready to accept service. • Building facilities are not ready (includes space, cable support structures, building risers and entrance facilities to be provided by builder or owner or owner’s subcontracted vendors). • The customer orders termination beyond the Network Interface.

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S. CREDIT ALLOWANCES (cont’d)

2. Interruption of Service

A credit allowance will be given for interruptions of service when the outage consists of 30 consecutive minutes, or more, from the time that the Company is notified, or the outage is discovered by the Company, whichever is earlier.

For credit allowance calculation purposes, each month is considered to have 1,440 half hours (30 days). Major fractions of the last additional half hour, consecutive with each first half hour, or more, of outage, is considered a full half hour.

In any month, as a result of an interruption, the total credit per element of the interrupted service may not exceed 100 percent of the monthly price for that particular element.

Performance parameters can be found in Ameritech Technical Reference AM TR-TMO-000101.

Credit allowances are subject to the general liability provisions set forth previously in this Guidebook. In addition, no credit allowance will be made for:

1. Interruption caused by negligence of the customer, failure of equipment, systems or facilities provided by the customer or others.

2. Interruption of a service during any period in which Company access to the premises (where the service is terminated) is required and is denied.

3. Interruption of a service when the customer has released that service to the Company for routine maintenance purposes, to make rearrangements, or for the implementation of an order for a change in the service during the time that was negotiated with the customer prior to the release of the service.

4. Interruption of a service which continues because of the failure of the customer to authorize replacement of any element of special construction. The period for which no credit allowance is made begins on the seventh day after the customer receives the Company’s written notification of the need for such replacement and ends on the day after receipt by the Company of the customer’s written authorization for such replacement.

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S. CREDIT ALLOWANCES (cont’d)

The following steps should be used to calculate a credit allowance:

Step 1

The interruption percentage is the proportion of the consecutive half hours of each outage, based on the preceding rules, to 1440 half hours.

Step 2

• For two-point services, determine all of the monthly price elements associated with the service, excluding charges for all equipment that may be optionally provided by the Company, the customer or another provider (i.e. - Channel Service Units).

• For multi-point services, determine all of the price elements associated with those points affected by the outage, excluding charges for all equipment that may be optionally provided by the Company, the customer or another provided (i.e. - Channel Service Units). If common equipment or services do not permit a determination of affected points, an average station point value will be calculated by dividing the total monthly charge for all of the elements utilized to provide the service by the total number of stations on the service, then multiplying the average station value by the number of stations affected by the outage.

• For multiplexed services, determine all the monthly element charges associated with the portion of the service that is inoperative.

Step 3 The Credit Allowance is calculated by multiplying the amount determined in Step 2 above by the percentage calculated in Step 1 above.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 41 SECTION 1 - General

T. DEFINITIONS

Accessories Devices which are mechanically attached to, or used with, the facilities furnished by the Company and which are independent of, and not electrically, acoustically, or inductively connected to, the conductors in the communications path of the Company facilities. These devices may not replace any of the component parts of the Company facilities or equipment, nor be injurious to the telecommunications network.

Authorized User Denotes an individual, partnership, association or corporation (other than the customer) who is authorized by the customer to be connected to the service of the customer and on whose premises a station of the dedicated communications service must be located.

Baud Denotes a unit of signaling speed. It is the reciprocal of the time duration in seconds of the shortest signal element (mark or space) within a code signal. The speed in bauds is the number of signal elements per second.

Channel A path for electrical communication, between two or more stations or Company offices furnished in such manner as the Company may elect, whether by wire, radio or a combination thereof and whether or not by means of a single physical facility or route.

Channel Mileage Provides for the transmission facilities between the serving wire centers associated with two customer designated premises, or between a serving wire center associated with a customer designated premises and a Company hub, or between two Company hubs.

Channel Mileage Termination Provides for the termination of transmission facilities between the serving wire centers associated with two customer designated premises, between a serving wire center associated with a customer designated premises and a Company hub, or between two Company hubs.

Dedicated Communications Service Dedicated Communications Service is that of furnishing the requisite facilities including channels and network terminating equipment, to enable the customer and authorized users to communicate between specified locations for continuous use.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 42 SECTION 1 - General

T. DEFINITIONS (cont’d)

Distributing Center Amplifying and bridging equipment employed to connect the various local sections of a multi-point loud speaker network.

Duplex Service Also known as Full Duplex Service. Service which provides for simultaneous transmission in both directions.

Equalization The term "Equalization" as used in connection with program transmission channels refers to the process applied to a program transmission channel so that the component frequencies of the program material transmitted have about the same relationship at the two ends of the channel.

Four-Wire The term "Four-wire" describes a facility comprised of four wires used to form an electrical path between terminations. Four-wire facilities may be arranged for half-duplex or duplex operation.

Full Duplex Service See Duplex Service above.

Half-Duplex Service The arrangement of a channel which provides for transmission alternately in either direction or for transmission in one direction only, but not for transmission in both directions simultaneously.

Interexchange Channel The term "Interexchange Channel" as used in conjunction with interexchange private line service denotes that portion of a through channel which connects exchange areas in which stations or channel terminations in Company offices are located, excluding, however, those portions which are defined as a "Local Channel" or an "interoffice Channel".

Interface The point at which facilities or services of one type are connected with facilities or services of another type.

Interoffice Channel The term "Interoffice Channel" as used in connection with private line service denotes that portion of a through channel which interconnects central office areas in which stations are located.

Interoffice Transport Interoffice Transport facilities, comprised of Channel Mileage and Channel Mileage Terminations, provide the transmission paths between Serving Wire Centers associated with two customer- designated premises or between a Serving Wire Center associated with a customer-designated premises and a Company hub location.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 43 SECTION 1 - General

T. DEFINITIONS (cont’d)

Isochronous Transmission "Isochronous Transmission" denotes that timing is recurring at regular intervals and is derived from the signal carrying the data at the rate of 1.544 Megabits per second (i.e., no timing or clock lead is provided at the customer interface).

Joint User A person, firm or corporation who is designated by the customer as a user of a dedicated communications service of the customer and to whom a portion of the charge for the service will be billed under a joint use arrangement.

Local Channel "Local Channel" as used in connection with private line services is that portion of a through channel which is provided within a central office area to connect a station with an interexchange channel, an interoffice channel, or another local channel serving a station within the same central office area.

"Local Channel" as used in connection with private line High Capacity Transport Service denotes a path for isochronous transmission furnished between the customer's premises and the serving central office.

Local Distribution Channel Provides interconnection between the Company Serving Wire Center (SWC) and the customer premises.

Local Service Area Private Line Service A "Local Service Area Private Line Service" is a service which connects two or more station locations within an exchange area, or connects two or more such locations in Company exchange areas each of which is in the local service area of the other or others, and is not connected to an interexchange service.

Non Loaded Circuit A circuit without regularly spaced inductors which are normally provided to control frequency loss. These circuits are suitable for limited distance data transmission.

Service Area Function A "Service Area Function" includes those necessary items which are added to the basic loop to provide the type of service involved (e.g., voice, data, etc.). It consists of circuit terminating equipment, equalizers, amplifiers, etc., wherever required to provide the designated service.

Service Terminal "Service Terminal" used in connection with Series 1000, 2000 and 3000 channels includes the facilities required to terminate an interexchange channel at the rate center.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 44 SECTION 1 - General

T. DEFINITIONS (cont’d)

Serving Wire Center The wire center from which a customer or user would normally be served for local exchange telecommunications service.

Signal Source The term "Signal Source" when used in connection with channels for television transmission denotes a location at which video and audio baseband signals are supplied to a local distribution system.

Synchronous A data transmission method where sending and receiving devices operate continuously in step with each other and are maintained by means of correction if necessary, in a desired timing.

Synchronous Optical Network (SONET) A set of international standards for fiber optic based transmission systems. SONET defines standard optical carrier transmission rates and utilizes a modular multiplexing approach based on the application of Synchronous Transport Signals (STS).

Synchronous Transport Signal (STS-1) A 51.84 Mbps signal within a SONET optical carrier signal. The STS-1 signal consists of overhead and synchronous payload envelope (SPE). The overhead part of the signal is used for controlling, framing and maintaining the signal. The SPE is used to transport the customer’s data.

Two-Wire "Two-wire" describes a facility comprised of two wires used to form an electrical path between terminations.

Wire Center A building in which one or more central offices, used for the provision of telephone exchange services, are located.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 45 SECTION 1 - General

U. CHARGES FOR INSTALLATIONS, MOVES AND CHANGES (cont’d)

1. General Terms and Conditions

• The application of charges for installations, moves and changes of private line channels and equipment is covered below. The elements of charge, other than nonrecurring charges, included in such paragraphs are further defined in Part 3, Section 1 of this Guidebook.

• All changes in location of private line services which involve non-continuous property locations are considered new installations for purpose of charge applications.

• When an existing two point service involving non-continuous property is converted to a multipoint service, credit is allowed for charges paid in connection with the two point service. When an existing multipoint service is converted to a two point service, no charges apply.

2. Application of Charges

Service and Equipment (S&E) Charge

The S&E charge applies per local channel, i.e., channel furnished between a service (continuous property) location and the central office serving such locations, where central office work is required to comply with the customer's request.

The S&E charges associated with private line local channels are as follows:

Local Service Area (LSA) Channels

S&E Charge All Terminations in Terminations in Description Same CO Area Different CO Areas

Type 1001 $ 93.45 $110.75

Type 1002A, 1002AA, 1002B, 1002C, 1005, 1006, 1102 189.20 222.65

Type 2001, 2002, 2013, 2014, 2020, 2021, 2024, 2025, 2026 189.20 222.65

Type 3001, 3002, 3040, 3041, 3080, 3081, 3083 189.20 222.65

Type 6003 189.20 222.65

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 46 SECTION 1 - General

U. CHARGES FOR INSTALLATIONS, MOVES AND CHANGES (cont’d)

2. Application of Charges (cont’d)

Service and Equipment (S&E) Charge (cont’d)

Interexchange Channels

Description S&E Charge

Type 1001 $ 185.75

Type 1002A, 1002AA, 1002B, 1002C, 1005, 1006, 1102 282.65

Type 2001, 2002, 2013, 2014, 2020, 2021, 2024, 2025, 2026 282.65

Type 3001, 3002, 3040, 3041, 3080, 3081, 3083 282.65

Type 6003 282.65

High Capacity Transport Service

The S&E Charges associated with private line High Capacity Transport Service are as follows:

Description S&E Charge

Local Channel $ 93.75

Additional Channel 28.90

Interoffice 118.40

Channelization - Initial 38.10 - Subsequent to the initial order 81.95

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 47 SECTION 1 - General

U. CHARGES FOR INSTALLATIONS, MOVES AND CHANGES (cont’d)

2. Application of Charges (cont’d)

Network Wiring Charge/1/

The Network Wiring Charge as specified in Part 3, Section 1 of this Guidebook applies to all customer requested installations, moves, changes of private line channels performed by the Company on the network side of the network interface.

Interface Jacks

See Part 3, Section 1 of this Guidebook.

3. Application of Nonrecurring Charges (NRC)

Certain items of service and equipment (other than telephones) included in Part 15, Section 3 (Channels) are subject to nonrecurring charges which apply, in addition to the S&E Charges specified above for installations, moves and changes of the associated private line channel.

/1/ Installations, moves and changes of private line channels performed after January 1, 1987 by the Company on the customer's side of the network interface will be performed on a non-regulated Premises Work and Material charges basis.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 48 SECTION 1 - General

V. RATE ZONE WIRE CENTER ASSIGNMENT

Each Company wire center has been assigned to a Rate Zone. This table lists wire centers assigned to Rate Zones 1 and 2. All other Company wire centers are assigned to Zone 3.

Zone 1 Zone 2

AKRNOH25 BCWDOH46 CLEVOH62 BKPKOH26 CLMBOH11 BKPKOH97 DYTNOH22 CLEVOH25 CLEVOH42 CLEVOH43 CLEVOH53 CLEVOH64 CLEVOH74 CLHGOH32 CLMBOH27 CLMBOH29 DYTNOH25 LKWDOH52 MPHGOH66 SHHGOH92 TOLDOH21 WOTNOH88

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 49 SECTION 1 - General

W. EXPEDITED ORDER CHARGE

The following services can be Expedited for an additional Order Charge:

Analog Channel Services Series 1000, 2000, 3000 and 6000 Base Rate Service 128, 256 and 384 Service DS1 Service

If a customer desires that service be provided on a due date less than the standard interval (7-10 days), which has been established for the order or the provision of the Service, the customer may request that service be provided on an expedited basis.

The provisioning of the expedited request is based upon available facilities and is limited to twelve (12) two-point or six (6) multi-point Analog/DS0 circuits at the same location; and a limit of four (4) DS1 Circuits at the same location. Expedited order requests do not apply to services that are jointly provided by the Company and an Independent Telephone Company.

If the Company determines that service can be provided on the requested expedited date and spare facilities are available, the following charges will apply:

Description /Billing Code/ Expedite Order Charge

Analog Channel Services and Base Rate Service /EODDO/ $650.00

DS1, 128K, 256K, and 384K Service /EODD1/ 650.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 1 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS

1.1 General

1.1.1 Classification of Channels

Analog Channels Facilities consisting of channels, channel terminals and channel arrangements are classified by series and further classified within each series by types. The various series and types are described in terms of circuit characteristics and use.

Digital Channels Facilities consisting of channels employing isochronous transmission at a speed of 1.544 Mbps.

Facilities consisting of channel terminations employing synchronous speeds of 2.4, 4.8, 9.6 and 56 Kilobits (Kbps) per second.

1.1.2 Mileage Measurement

A. Mileage for Series 6000 channels is determined as set forth in 1.2.6.

B. Mileage for a Type 1002AA channel is determined as set forth in 1.2.4.D.

C. Interexchange Channel

The interexchange mileage for Series 1000, 2000 and 3000 channels is determined as follows:

1. Two Point Service

The rate mileage is the airline distance between the rate centers of the service points determined in accordance with the Mileage Calculation Using V & H Coordinates procedure set forth in Part 15, Section 1. Rate center V & H coordinates are contained in Part 9, Section 2.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 2 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont’d)

1.1 General (cont’d)

1.1.2 Mileage Measurement (cont’d)

C. Interexchange Channel (cont’d)

2. Multipoint Service

a. For connection of customer-provided terminal equipment or communications systems, the rate mileage is the combination, specified by the customer, of two point mileages determined in the same manner as for two point services.

b. All others

The rate mileage is the sum of two point mileages determined in the same manner as for two point services using the shortest continuous airline measurement connecting the rate centers.

3. Each interexchange channel connected to a switching arrangement is considered as a separate channel for which the interexchange mileage is independently computed.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 3 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont’d)

1.1 General (cont’d)

1.1.2 Mileage Measurement (cont’d)

D. Interoffice Channels - Series 1000, 2000 and 3000

1. The interoffice rate mileage is the airline distance between central offices (wire centers) of the service points determined in accordance with the Mileage Calculation Using V & H Coordinates procedure set forth in Part 15, Section 1. Central office/wire center V & H coordinates are set forth in the National Exchange Carrier Association (NECA) Tariff FCC No. 4.

2. Where service points are located in more than two central office areas, the interoffice rate mileage is the sum of the two point interoffice rate mileages using the shortest continuous airline measurement connecting the central offices.

E. Local Channels - Series 1000, 2000 and 3000

1. For a local channel, a local channel charge applies in lieu of mileage, except as set forth in 2 following, and such charge is set forth in 1.2.4.B following.

2. For a local channel associated with an interexchange channel for a Type 1002AA channel, mileage is determined as set forth in 1.2.4.D.

F. Local Channel - High Capacity Transport Service

Local Channel Mileage is the airline distance between the customer's premises and the serving central office.

G. Interoffice Channel - High Capacity Transport Service

Interoffice Channel Mileage is the airline distance between central offices.

H. Channel Mileage - Basic Digital Service

Channel mileage is the airline distance between central offices.

I. Channel Mileage - Direct Digital Service

Channel mileage is the airline distance from the DDS hub to the serving central office.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 4 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.1 General (cont'd)

1.1.3 Continuous property locations

A. Buildings located on separate plots of ground and occupied by various customers shall be treated as being on continuous property, when such plots are situated so as to constitute continuous property were they occupied by a single customer. In such cases, conduit shall be provided and maintained in its entirety between buildings by the customer or another person, such as a building owner, contractor, etc.

B. Whenever the Company's general distributing plant is used by the customer to connect terminations or stations within a building or on the same continuous property the stations or terminations are considered to be on non-continuous property for purposes of rate and charge applications.

1.1.4 Joint Use Arrangement

A. Joint use arrangements are offered in connection with private line services furnished on a twenty-four hour per day, seven day per week basis for private line voice, teletypewriter, data transmission or remote metering, supervisory control and miscellaneous signaling purposes under the provisions of 1.2.1 through 1.2.4 for

1. Series 1000 channels and equipment (except Type 1002AA)

2. Series 2000 channels and equipment

3. Series 3000 channels and equipment

Joint use arrangements are not offered in connection with such private line services when those services are furnished for use in connection with composite data service.

B. A joint user of a private line service must have a local channel and station on such service located on his premises, except that such requirement does not apply to a joint user of private line service with respect to his use of additional channels created by the customer from the private line in accordance with 2.2.5.B, provided such joint user has a station on a channel connected under the provisions of Part 2, Section 9 of P.U.C.O. Tariff No. 20 to the additional channel created by the customer.

C. The customer shall be solely responsible for the manner in which the joint use of the service will be allocated. Applications for service and requests involving additions, rearrangements, relocations, modifications or discontinuance of service will be accepted by the Company only from the customer.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 5 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.1 General (cont'd)

1.1.4 Joint Use Arrangement (cont’d)

D. Where a customer requests that his service be arranged for joint use, the rates and charges for such service shall be determined as provided in this Guidebook (and P.U.C.O. Tariff No. 20) and, in addition, the following monthly rates will apply:

Monthly Rate USOC

Each service arranged for joint use, per joint user $16.75 JNP

Each local channel used to meet the communications requirements of a joint user 22.20 JNS

E. All charges for the service, including the additional charges for the joint use arrangement and for local channels furnished for the joint users as part of the private line service, will be computed as though the service were to be billed to the customer. The customer and each joint user will be billed for the components of the service which are furnished exclusively to each of them for his individual use. The charges for components of the service which are jointly used will be allocated for billing purposes in accordance with percentages of use specified by the customer. The specified percentages shall remain in effect for a minimum of one month and such percentages on file on the first day of the customer's billing cycle will be used in computing that month's billing. Without affecting the customer's ultimate responsibility for payment of all charges for the service, each joint user shall be responsible for the payment of the charges billed to him in accordance with this sub-paragraph.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 6 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.1 General (cont'd)

1.1.5 Customer Operating Center Service

A. Description of Service

1. Customers who utilize large quantities of channels between their premises and their normal serving central office (i.e., local channels) in connection with burglar alarm channels which terminate at such customer's premises may optionally subscribe to Customer Operating Center (COC) Service. COC Service is an arrangement under which the Company will provide dedicated complements of cable pairs between the customer's premises and the normal serving central office, and will charge for such dedicated complements of cable pairs under the provisions of Paragraph 1.1.5.B.1 and 2 in lieu of local loop charges in Paragraph 1.2.4 of this Guidebook. In addition, the COC customer will be billed for the appropriate Service Area Function and S&E charges as specified in B.3 following for each local channel activated.

2. The customer of COC Service will also be billed for all patron's lines connected through the COC which includes local channels and interoffice mileage, where applicable, between the patron's premises and their normal serving central office at the rates specified in Paragraph 1.1.5.B.4 of this Guidebook.

3. The rates and charges in B.2 following for each complement of cable pairs are based on the specific quantity, size and length of cable dedicated to the customer's use.

a. At the time COC Service is initially requested, the customer is responsible for furnishing to the Company an estimate of the number of dedicated cable pairs which will be required. The rates specified in B. following apply for each dedicated cable pair, whether activated or not.

b. Complements are available in 100, 200, 300, 600, 900 or 1200 pair sizes.

c. Length is measured in one quarter mile increments from the customer's premises to the normal serving central office. The maximum length which will be furnished under the provisions of 1.1.5. is one mile.

d. Type 1001, 1102, 3001, 3002 and 3041 local channels may be activated for COC Service.

4. Provided no physical modification of circuits is required for existing burglar alarm customers that convert to COC Service, the S&E charge to convert to COC Service as specified in Section 1 preceding will be waived.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 7 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.1 General (cont'd)

1.1.5 Customer Operating Center Service (cont’d)

B. Rates and Charges

Nonrecurring Charge

1. To establish and to convert to or from COC Service $56.00

2. Each dedicated complement of cable pairs

Monthly Nonrecurring Rate Charge USOC

(a) Within 1/4 mile

100 pair cable $470.00 $4,718.00 1LZ1A 200 pair cable 611.00 6,121.00 1LZ2A

3. In addition to the rates and charges in 1 and 2 preceding, the following rates and charges apply to activate each local channel within the dedicated complement of cable pairs from the normal serving central office to the customer's premises:

a. The monthly rate as specified in Paragraph 1.2.4.A following for the appropriate Service Area Function.

4. In addition to the rates for the appropriate dedicated complements of cable pairs as covered in 1, 2 and 3 preceding, the following rates and charges apply to activate each local channel from the normal serving central office to the patron's premises:

a. The S&E charges specified in Section 1 preceding.

b. The monthly rates specified in Paragraph 1.2.4.A following for the local loop and the appropriate Service Area Function and the interoffice mileage, if applicable.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 8 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates

1.2.1 Series 1000 Channels

A. Types and Description

Series 1000 channels are unconditioned channels capable of transmitting signals at rates up to 150 bauds. These channels are furnished for half-duplex or duplex operation. Duplex service is furnished on an entire channel, or on a portion thereof, where facility conditions permit.

The transmission characteristics and the various types of services furnished within this series are as follows:

1. Type 1001 - Transmission of frequencies of up to 15 Hertz or impulses per second for remote metering, supervisory control and miscellaneous signaling purposes.

2. Type 1102 - Transmission up to 30 baud, for remote metering, supervisory control, and miscellaneous signaling purposes; for local service area multipoint service and interexchange two-point or multipoint service.

3. Type 1002A - Transmission of miscellaneous signaling frequencies up to 60 Hertz per second for remote metering, supervisory control and miscellaneous signaling purposes.

4. Type 1002AA - Special - similar in transmission characteristics of Type 1002A to be used only for Civil Air Defense Warning Systems.

5. Type 1002B - Transmission up to 45 bauds for teletypewriter or data purposes.

6. Type 1002C - Transmission up to 55 bauds for teletypewriter or data purposes.

7. Type 1005 - Transmission up to 75 bauds for teletypewriter or data purposes.

8. Type 1006 - Transmission up to 150 bauds for teletypewriter or data purposes.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 9 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.1 Series 1000 Channels (cont’d)

B. Regulations

In addition to the regulations set forth in 2., the following regulations apply to Series 1000 channels.

1. Types 1001, 1002A and 1102

a. These channels may be used for such purposes as indicating readings of meters at distant locations, operating switches which in turn perform some desired operation, or operating special signaling devices of the customer.

(1) Channel facilities of the types available in the telephone plant are furnished for this service.

(2) Channels of similar grade furnished by the Company for these purposes may be interconnected by the customer on his premises. When such interconnection is made, the Company's responsibility is limited to providing and maintaining satisfactory transmission capabilities only between the terminal points of each individual channel which it furnishes.

(3) These channels may be used by the customer, in accordance with the normal transmission characteristics of such channels, to transmit more than one signal in sequence or simultaneously except when used in connection with private land radiotelephone stations established for communication with mobile units. The use of these channels is available on two point services; such use on a multipoint service is available only where facility conditions permit.

(4) All equipment and facilities at station locations, other than equipment necessary for suitably terminating the channel facilities on the premises of or within the building occupied by the customer or authorized user, shall be provided by the customer except that upon the customer's request, the Company will furnish at station locations, signaling and selective equipment and facilities of the kind ordinarily furnished by the Company for use with channels for remote metering, supervisory control or miscellaneous signaling purposes.

(5) The rates and charges specified for channels contemplate the furnishing of normal facilities suitable for the transmission of frequencies within the range specified; where channel facilities of a different type than would normally be furnished are required by the customer for reasons other than the basic frequency requirements, the rates or charges based upon costs incurred apply for such channels.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 10 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.1 Series 1000 Channels (cont’d)

B. Regulations (cont’d)

1. Types 1001, 1002A and 1102 (cont’d)

b. Local service area channels are furnished on a half-duplex basis only. However, where the customer desires grounded channel facilities, the Company will undertake, if possible, to make such channels available by subdividing a metallic channel to create two grounded channels.

c. These channels are furnished on a twenty-four hour per day, seven day per week basis only.

d. Where these channels are furnished between equipment at airports and equipment used in providing flying aids for air navigation, such as radiotelephone and radiotelegraph stations, markers, beacons, etc., and the location of the latter equipment is in the same LATA and is in an exchange area contiguous to the exchange area in which the airport is located and is not more than five airline miles from the location of the equipment at the airport, the rates for local service area channels apply for the portion of the channel furnished by the Company. Where construction is required in connection with such channels, the same rates and regulations as apply in connection with channels confined to a single exchange area are applicable.

e. Multipoint service for Type 11O2 channels is limited to a maximum of 26 points served from a total of no more than 3 different serving central offices and may be further limited by the transmission distance limitations of customer-provided terminal equipment.

2. Types 1001, 1002A, 1002B, 1002C, 1005, 1006 and 1102

For Types 1001, 1002A and 1102 channels, in addition to the regulations set forth in 1. preceding, the following regulations apply. These regulations are also applicable to Types 1002B, 1002C, 1005 and 1006 channels:

a. Channels, including channels created by the customer, may not be connected with other private line services or, except as set forth in Part 2, Section 9 of P.U.C.O. Tariff No. 20, with the exchange or toll network.

b. In those cases where conditions are encountered that involve abnormal costs in deriving the channel, additional rates or charges based upon costs incurred apply.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 11 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.1 Series 1000 Channels (cont’d)

B. Regulations (cont’d)

3. Type 1002AA

These channels are furnished between the control station and the receiving stations of a customer's Civil Air Defense Warning System and may not be directly or indirectly connected with any other facilities of the Company nor with other customer-provided equipment or facilities.

4. Types 1002B, 1002C, 1005 and 1006

a. Where a station of an intrastate interexchange private line teletypewriter service furnished by the Company or of an interstate service furnished by the Company or furnished under contract with a Bell Company is located in an exchange area of a connecting company, the Company will furnish private line teletypewriter service between points within such exchange area if one of such points is in the building or on the continuous property where the station of the interexchange service is located, and provided satisfactory arrangements can be made with the connecting company involved.

(1) Where the stations are on non-continuous property, the charges of the connecting company involved apply.

b. Switching Arrangements for Teletypewriter Service

(1) Switching arrangements are provided to permit the customer to connect two or more separate interexchange channels to form through two point or multipoint connections. Such arrangements will be furnished where facility conditions permit at rates and charges based upon costs incurred.

Note: Each interexchange channel connected to a switching arrangement is priced as a separate service but remains as an integral part of customer's network.

(2) When duplex service is furnished on a portion of an interexchange channel, switching arrangements are required at the junction points of the half-duplex and duplex sections and are charged for as provided in (1) above.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 12 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.1 Series 1000 Channels (cont’d)

B. Regulations (cont’d)

5. Type 1006

a. Station arrangements are required for stations or terminations on a Type 1006 channel when such stations or terminations are located on different premises (i.e., in same building or on same or non-continuous property). The monthly rates for these arrangements are set forth in 1.2.4 following.

b. Transmission between only two stations at the same time is normally contemplated, however, arrangements may be made to provide for transmission between more than two stations at the same time, for which special equipment and arrangements are furnished at rates or charges based upon costs incurred.

1.2.2 Series 2000 Channels

A. Types and Description

This series is furnished for voice transmission within the approximate bandwidth of 300-3000 Hertz and is provided in the following types:

1. Type 2001 - Furnished primarily for intercommunication for one customer, or for two or more customers.

2. Type 2002 - Furnished in connection with remote operation of private mobile radiotelephone systems.

May also be used for combined voice transmission and control purposes.

3. Type 2013 - Furnished for PBX or similar off-premise main station use.

4. Type 2014 - Furnished as a two-wire interface with effective two-wire facilities furnished for PBX (or similar) off-premises main stations capable of operating over loops with resistance up to 1300 ohms with Signaling Arrangements as specified in 1.2.2.B.8.

5. Type 202 - Furnished for tie line use between PBX's (or similar) systems.

6. Type 2021 - Furnished as a two-wire or four-wire transmission interface with four-wire facilities for tie line use between PBX's (or similar) systems with Signaling Arrangement as specified in Section 1.2.2.B.7 following.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 13 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.2 Series 2000 Channels (cont’d)

A. Types and Description (cont’d)

7. Type 2024 - Furnished for tie line use between a PBX (or similar) systems and a Centrex central office system.

8. Type 2025 - Furnished as a two-wire or four-wire transmission interface with four-wire facilities for tie line use between a PBX (or similar) systems and a Centrex CO; with Signaling Arrangement as specified in Paragraph 1.2.2.B.8 following.

9. Type 2026 - Furnished for tie line use in connection with Centrex.

B. Regulations

In additions to the general regulations set forth in Section 1, preceding, the following regulations apply to Series 2000 channels:

1. General

a. Series 2000 channels are furnished for half-duplex operation.

b. Communicating between only two stations at the same time is contemplated with Series 2000 channels; however, to permit communication for more than two stations at the same time, special equipment and arrangements may be furnished at rates and charges based on costs incurred.

2. Type 2001

a. Terminations of Type 2OO1 channels can be in facilities provided by the Company or by the customer or in equipment provided by the customer.

Where stations are not permanently connected to an interexchange service, it is contemplated that they be located on the same premises or continuous property as the equipment on which service is terminated.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 14 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.2 Series 2000 Channels (cont’d)

B. Regulations (cont’d)

2. Type 2001 (cont’d)

b. Signaling

(1) Signaling on a two point interexchange service may be arranged for ring-down operation; automatic ringing; dial signaling; automatic signaling; key signaling; a combination of one-way magneto signaling - one-way key signaling or one-way key signaling - one-way automatic signaling.

Signaling on a multipoint interexchange service is arranged for magneto or key operation, or a combination thereof.

(2) Signaling on channels confined to a local service area may be arranged for magneto signaling; key signaling; one-way magneto - one-way key signaling; automatic signaling; and one-way key - one-way automatic signaling.

c. The connection of Type 2001 channels at any one point but not simultaneously at more than one point, with exchange service is permitted, subject to the following conditions:

(1) The Company will not warrant that standard operation and transmission can be obtained when such connections are established. When standard operation and transmission would normally not be obtained and the necessary facilities to do so can be provided, the Company will, upon the request of the customer, provide the necessary equipment and facilities at additional rates and charges based upon costs incurred.

(2) Connections to exchange service, in situations involving two or more telephone companies, will be made only with the concurrence of all of the telephone companies participating in the provision of the service.

d. Channel facilities for Homebound-Student School service are furnished for an intercommunicating service designed for two-way communication for instruction to students who are unable to attend school.

Channel facilities are provided at rates and charges specified for local service area channels on a twenty-four hour per day, seven day per week basis only.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 15 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.2 Series 2000 Channels (cont’d)

B. Regulations (cont’d)

3. Type 2002

a. These channels furnished for voice transmission or for combined voice transmission and control purposes may be interconnected at the customer's private land radiotelephone station with channels of the customer established for communication with mobile units.

b. Type 2002 channels, in addition to being used in accordance with the normal characteristics for combined voice transmission and control purposes, may be used by the customer to transmit more than one signal alternately or simultaneously or to create additional channels for remote metering, supervisory control and miscellaneous signaling purposes. The use of these channels is available on two point services; such use on a multipoint service is available only where facility conditions permit.

c. All equipment and facilities at station locations, other than equipment necessary for suitably terminating the channel facilities on the premises of or within the building occupied by the customer or authorized user, shall be provided by the customer.

d. Channels, including channels created by the customer, may not be connected with other private line services or with the exchange or toll network.

4. Types 2013 and 2014

These channels are furnished to connect the customer's off-premises PBX stations located outside the local service area of such customer's serving PBX system, subject to the following:

a. Off-premises stations located on other premises of the same customer may be used for communication with other stations directly connected to the PBX system and located on the same premises as the PBX attendant position. Off-premises station lines may also be used in connection with trunk lines, tie lines, other off-premises station lines or private lines, subject to the condition that the Company does not warrant that standard operation and transmission can be obtained when such connections are established.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 16 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.2 Series 2000 Channels (cont’d)

B. Regulations (cont’d)

4. Types 2013 and 2014 (cont’d)

a. (cont’d)

In cases where standard operation and transmission would normally not be obtained, the Company will, if the necessary facilities and equipment are available to furnish standard operation and transmission, provide these facilities and equipment at additional rates and charges based on costs incurred.

b. Channels to connect off-premises stations located on premises of someone other than the customer are furnished with the understanding that such stations will be used only for communication with other stations directly connected to the PBX system and located on the same premises as the attendant position and ordinarily only on condition that separate exchange service is also furnished at the same off-premises location.

5. Types 2020 and 2021

These channels are furnished as tie lines to connect PBX (or similar) systems of the same or different customers on different premises, subject to the following:

a. Tie lines connecting systems which are located on two different premises of the customer are furnished for communication between stations directly connected to and located on the same premises as the dial switching equipment of PBX attendant positions involved. Tie lines may be used in connection with PBX trunk lines, off-premises station lines, other tie lines, or interexchange private lines, subject to the condition that the Company does not warrant that standard operation and transmission can be obtained when such connections are established.

In cases where standard operation and transmission would normally not be obtained, the Company will, if the necessary facilities and equipment are available to furnish standard operation and transmission, provide these facilities and equipment at additional rates and charges based on cost incurred.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 17 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.2 Series 2000 Channels (cont’d)

B. Regulations (cont’d)

5. Types 2020 and 2021 (cont’d)

b. Tie lines connecting PBX systems of different customers are furnished with the understanding that such tie lines are to be used only for communication between stations directly connected to and located on the same premises as the dial switching equipment or PBX attendant positions involved. Such tie lines are provided only if each of the PBX systems involved is connected to the central office by PBX trunk lines.

6. Types 2024, 2025 and 2026

These channels are furnished as tie lines to connect PBX (or similar) systems and Centrex CO services or in connection with Centrex CO service as described in 1.2.2.A preceding. Such channels are subject to the provisions in 5. above and the "Tie Line" provisions in Part 5, Section 1 of this Guidebook.

7. Signaling Arrangements

a. The following Signaling Arrangements are furnished for registered and grandfathered PBX (or similar) systems in accordance with Part 68 of the Federal Communications Commission's Rules and Regulations.

(1) Signaling Arrangements for use with Type 2014 channel which connect off-property stations of PBX (or similar) systems;

Type A - Furnished for use with Class A PBX (or similar) station ports capable of operation over loops with resistance in the range of 0-199 ohms.

Type B - Furnished for use with Class B PBX (or similar) station ports capable of operation over loops with resistance in the range of 200-899 ohms.

Type C - Furnished for use with Class C PBX (or similar) station ports capable of operation over loops with resistance in the range of 900 ohms or more.

(2) Signaling Arrangements for use with Type 2021 and 2025 channels furnished as PBX to PBX or PBX to Centrex CO tie lines with E and M signaling interfaces.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 18 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.2 Series 2000 Channels (cont’d)

B. Regulations (cont’d)

7. Signaling Arrangements (cont'd)

b. The following regulations apply to the Signaling Arrangements for off-property stations as described in a-(1) preceding.

(1) For new connections of off-property stations to registered PBX (or similar) systems, the customer must specify the equipment capability, i.e., Type A, B or C port, of the system.

(2) Customers with grandfathered PBX (or similar) systems may either

(a) continue to provide their own off-property station signaling capability and utilize only Company-provided channels, or

(b) specify the equipment capability of their system and request the Company to provide the Signaling Arrangement.

c. The following regulations apply to the Signaling Arrangement for tie lines as described in a-(2) preceding.

(1) An E and M Signaling Arrangement is required for each dial repeating tie line termination in a registered PBX (or similar) system.

(2) An E and M Signaling Arrangement is required for each tie line termination in a grandfathered PBX (or similar) system only when the tie line is arranged with an E and M signaling interface.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 19 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.3 Series 3000 Channels

A. Types and Description

1. The following Series 3000 channels which are designed to meet certain specifications based upon Company standards of measurement for the various purposes set forth below, are furnished within the approximate bandwidth of 300-3000 Hertz for half duplex or duplex operation. Duplex service, however, which may be furnished either on an entire channel or on a portion thereof, is available only where facility conditions permit.

a. Type 3001 - Furnished for remote metering, supervisory control and miscellaneous signaling purposes.

b. Type 3002 - Furnished for data transmission.

2. The following Series 3000 channels known as Local Area Data Channels are suitable for baseband transmission of digital data signals between two stations within the same serving central office area, and are offered only for balanced transmission of data signals conforming to the signal power limitations and other parameters specified in the applicable Bell System Technical Reference(s). Service is limited to stations that are not more than six route miles apart, as determined by the Company, using normal cable routing between the stations to be served. The Local Area Data Channels available are of the following types.

a. Type 3080 - Two-wire facilities

b. Type 3081 - Four-wire facilities

3. The following Series 3000 channels are furnished as access lines of DATAPHONE® Select- A-Station Service:

a. Type 3040 - Two-wire access lines between a Data Station Selector (DSS) and remote stations.

b. Type 3041 - Four-wire access lines between a DSS and either the master station or remote stations or between DSS's.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 20 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.3 Series 3000 Channels (cont'd)

B. Regulations

In addition to the regulations set forth in Section 1 preceding, the following regulations apply to Series 3000 channels:

1. General

a. Channels including channels created by the customer may not be connected with other private line services or with the exchange or toll network.

b. In those cases where conditions are encountered that involve abnormal costs in deriving the channel, additional rates or charges based upon costs incurred apply.

2. Type 3001 and 3002

a. These channels are not suitable for the transmission of direct current pulses.

b. The number of stations that may be connected and the distance over which satisfactory transmission is possible may be limited by operating and transmission factors on channels furnished for data transmission.

3. Type 3001

a. These channels are furnished for such purposes as reading meters at distant locations, operating switches which in turn perform some desired operation, or operating special signaling devices of the customer.

(1) Channel facilities of the types available in the telephone plant are furnished for this service.

(2) Channels of similar grade furnished by the Company for these purposes may be interconnected by the customer of his premises. When such interconnection is made, the Company's responsibility is limited to providing and maintaining satisfactory transmission capabilities only between the terminal points of each individual channel which it furnishes.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 21 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.3 Series 3000 Channels (cont'd)

B. Regulations (cont’d’)

3. Type 3001 (cont’d)

a. (cont’d)

(3) All equipment and facilities at station locations, other than equipment necessary for suitable termination of the channel facilities on the premises of or within the building occupied by the customer or authorized user, shall be provided by the customer except that upon the customer's request, the Company will furnish at station locations, signaling and selective equipment and facilities of the kind ordinarily furnished by the Company for use with channels for remote metering, supervisory control or miscellaneous signaling purposes.

(4) The rates and charges specified for channels contemplate the furnishing of normal facilities suitable for the transmission of frequencies within the range specified. Where channel facilities of a different type than would normally be furnished are required by the customer for reasons other than the basic frequency requirements, the rates or charges based upon costs incurred apply for such channels.

b. Where Type 3001 channels are furnished between equipment at airports and equipment used in providing flying aids for air navigation, such as radio telephone and radiotelegraph stations, marke beacons etc., and the location of the latter equipment (1) is in the same LATA and in an exchange area contiguous to the exchange area in which the airport is located, and (2) is not more than five airline miles from the location of the equipment at the airport, the rates for local service area channels apply for the portion of the channel furnished by the Company. Where construction is required in connection with such channels, the same rates and regulations as apply in connection with channels confined to a single exchange area are applicable.

4. Type 3002

Data sets are required to condition signals generated by apparatus furnished by the customer to signals suitable for transmission on a channel and to condition signals received from such a channel to signals for delivery to apparatus furnished by the customer.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 22 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.3 Series 3000 Channels (cont'd)

B. Regulations (cont’d)

5. Local Area Data Channels (Type 3080, 3081)

a. These channels require the use of cable facilities having neither load coils nor bridge-tap. In the event such facilities are not available, the Company will, at the customer's request, remove load coils and bridge-tap from facilities at cable opening charges as shown in 1.2.4.F. following.

b. Provision of such channels is subject to the availability of existing facilities.

6. Types 3040 and 3041

A Type 3041 channel may be used between a DSS and a remote station where transmission limitations preclude using a Type 3040 channel.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 27 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.4 Rates and Charges - Series 1000, 2000 and 3000 Channels (cont'd)

B. Application of Monthly Rate Elements to Local Service Area Private Line Services

1. Private line services between non-continuous property locations

a. Private line services between non-continuous property locations are provided in the channel types specified in 1.2.1, 1.2.2 and 1.2.3 preceding.

b. The monthly charge for private line service when all service locations are within the same central office area is the appropriate monthly rate set forth in A.1 preceding for the number of local channels required to provide such service.

c. The monthly charge for private line service with service locations in two or more central office areas is

(1) the appropriate monthly rate specified in A.2 or A.3 preceding for interoffice channels between the central offices of the service locations involved, computed in accordance with the provisions of 1.1.2.D preceding; plus

(2) the appropriate monthly rate specified in A.1 preceding for a local channel between each service location and its serving central office.

C. Application of Monthly Rate Elements to Interexchange Private Line Services

1. The monthly charge for interexchange private line service is

a. the appropriate monthly rate specified in A.2 or A.3 preceding for the interexchange channels between the rate centers of the service points, computed in accordance with the provisions of 1.1.2.C preceding; plus

b. the monthly rate specified in A.2 or A.3 preceding for a service terminal per two point section, per rate center in which an interexchange channel terminates or connects to one or more service locations.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 28 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.4 Rates and Charges - Series 1000, 2000 and 3000 Channels (cont'd)

C. Application of Monthly Rate Elements to Interexchange Private Line Services (cont’d)

2. In addition, whenever the interexchange channel connects to one or more service locations within the exchange area of a rate center, the monthly charge for that portion of the service between the rate center and the service locations is as follows:

a. All service locations in rate center central office area:

b. Service locations in two or more central office areas:

The appropriate monthly rate specified in A.2 or A.3 preceding for an interoffice channel(s) between the rate center central office and the central office(s) of the service locations, computed in accordance with the provisions of 1.1.2.D preceding plus the appropriate monthly rate specified in A.1 preceding for a local channel between each service location and its serving central office.

Description /Billing Code/ Monthly Rate

D. Civil Air Defense Warning Systems

Type 1002AA

1. Channel Facilities

a. Interexchange Channels

Where all stations are in Company exchange areas which are not in the local service area of the other or others

Each mile or fraction thereof (Mileage is determined as set forth in 1.1.2.C.1. preceding) /1L334/ $9.90

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 29 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.4 Rates and Charges - Series 1000, 2000 and 3000 Channels (cont'd)

D. Civil Air Defense Warning Systems (cont’d)

Type 1002AA (cont’d) Monthly Rate USOC

1. Channel Facilities (Cont’d)

b. Local channels provided in connection with interexchange channels

Each 1/4 mile or fraction thereof $2.75 1L33R

(Measured airline between each receiving station and the rate center of the exchange area in which the receiving station is located)

c. Local Service Area Channels

Where all stations are in a Telephone Company exchange area or in Telephone Company exchange areas which are in the local service area of the other or others

Each 1/4 mile or fraction thereof 2.75 1L33M

(Measured airline between each receiving station and the normal central office of the receiving station)

E. Miscellaneous Channel Arrangements

1. Type 1006 Channel Station Arrangements

Station arrangements are required under the conditions specified in 1.2.1.B.6, and at the following rates: Monthly Rate USOC

a. Two stations, each station $31.15 4GTMS b. More than two stations, each station 61.15 4GTMP

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 30 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.4 Rates and Charges - Series 1000, 2000 and 3000 Channels (cont'd)

E. Miscellaneous Channel Arrangements (cont'd)

2. Switching arrangements - Type 2001 Interexchange Channels

Switching arrangements are provided to permit a customer with a PBX system to connect two separate two point private line services so as to form through connections, the provision of which contemplates satisfactory transmission over such private line services.

Monthly Rate USOC

a. Per service point, per service arranged $31.75 SWA

Note: Each private line connected to a switching arrangement is provided as a separate service but remains as an integral part of the customer's network.

b. Other types of switching arrangements will be furnished where facility conditions permit at rates and charges based upon costs incurred.

c. A switching arrangement associated with a PBX system requires an interexchange private line terminal.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 31 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.4 Rates and Charges - Series 1000, 2000 and 3000 Channels (cont'd)

F. Moves and Changes

1. Bridging of terminations of local and interoffice portions of local service area channels (Types 1001, 1002A, 3001 and 3002)

a. Bridging equipment at bridging points

Bridging equipment provided by the Company at bridging points in connection with multipoint channels is furnished at rates or charges based upon costs incurred except for Types 3001 and 3002 channels, in which event standard bridging equipment provided by the Company at bridging points in connection with multipoint channels is furnished without additional charge.

b. Rearrangements of terminations at bridging points

(1) No charge applies to terminations left in place on a channel when terminations are added or when terminations are removed.

(2) For transfer of one or more terminations from a given channel to another, apply a charge equal to the charge to move one channel termination.

Nonrecurring Charge 2. Removal of load coils and bridge-tap for Local Area Data Channels, per cable opening $520.30

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 32 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.5 Series 6000 Channels

A. Types and Description

Series 6000 channel facilities are specially equipped and operated for program transmission in connection with loudspeakers and sound recording and are furnished for the transmission in one direction of music or speech. In addition, where facilities are suitable, these channel facilities can be operated for facsimile transmission.

1. Interexchange Type 6003 Channels

Interexchange Type 6003 channels provide for the continuous use of program transmission facilities, without special operation and supervision, for the transmission of audio within an approximate bandwidth of 200-3500 Hertz. Transmission limitations permit the satisfactory transmission of the above frequency range only over limited distances. Type 6003 covers the provisions of interexchange channel facilities and services, including the necessary station connections.

2. Station Connection

The amplifying equipment and services required for a Type 6003 channel at various points of connection.

3. Local channels and local service area channels are furnished as specified in C. following.

B. Regulations

In addition to the regulations set forth in Section 1 preceding, the following regulations apply to series 6000 channels.

1. Series 6000 channel facilities are the only channel facilities furnished by the Company for program transmission in connection with loudspeaker and sound recording equipment. Facilities furnished in connection with exchange, message toll or private line service for voice transmission may neither be connected with program transmission channels nor be connected directly or indirectly with loudspeaker or sound recording equipment associated with program transmission channels. Channels furnished in connection with loudspeakers may be connected with paging systems. Channels furnished in connection with loudspeakers and sound recording equipment may be interconnected with channels furnished in connection with radio broadcasting.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 33 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.5 Series 6000 Channels (cont’d)

B. Regulations (cont’d)

2. The customer may interconnect at his studio the channels provided by the Company with channels other than those provided by the Company, provided such interconnection will not result in the connection, either directly or indirectly, of the interexchange channels of the Company with interexchange facilities of others.

3. Mileage Measurements

a. Interexchange Channels

Mileage measurements for interexchange channels are determined in accordance with the procedure specified for two point and multipoint service as set forth in 1.1.2.C.1 and 2 preceding.

b. Local Channels associated with Interexchange Channels

The mileage is the airline distance between the rate center and the station.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 34 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.5 Series 6000 Channels (cont’d)

B. Regulations (cont’d)

3. Mileage Measurements

c. Local Service Area Channels

(1) Two point channel

The mileage is the airline distance between the stations involved.

(2) Multipoint Channel

The mileage is the airline distance of each section of a multipoint channel between distributing centers or between a station and its distributing center. However, when a station's distributing center is not its serving central office, the mileage is the airline distance between the station and the distributing center measured via the serving central office.

Note: The distributing center is the central office designated by the customer as the location at which sections of the multipoint channel which serve stations located in the central office area served by the designated central office are to be connected to (1) a section or sections of the multipoint channel extending between the designated central office and another distributing center, (2) to stations in another central office area or (3) where practicable, to the point of connection with an interexchange channel.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 35 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.5 Series 6000 Channels (cont’d)

C. Rates

1. Interexchange Channels

a. Channel facilities for occasional use are furnished on an interexchange basis only at rates and charges based upon costs incurred.

b. Channel facilities for continuous use

Monthly Rate USOC Type 6003 Each mile or fraction thereof $13.25 1LGN4 Station connection, per connection 71.55 5FT

c. Local channels associated with interexchange channels

(1) A local channel used to serve one station in an exchange area

- Rates and charges specified in C.2 following apply.

(2) A local channel used to serve two or more stations in an exchange area.

- Rates and charges specified in C.2 following apply.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 36 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.5 Series 6000 Channels (cont’d)

C. Rates (cont’d)

2. Local Service Area Channels (cont’d)

a. Where the stations are on non-continuous property

Monthly Rate USOC

(1) Two point channels

(a) Non-equalized First 1/4 mile or fraction thereof $12.70 1LNH4 Each additional 1/4 mile or fraction thereof 4.80

(b) Equalized with approximate frequency range of (i) 100 to 5,000 Hertz First 1/4 mile or fraction thereof 13.85 1LG3Y/1/ Each additional 1/4 mile or fraction thereof 5.30 1LUGR/1/

(ii) 50 to 8,000 Hertz First 1/4 mile or fraction thereof 13.85 1LG4Y/1/ Each additional 1/4 mile or fraction thereof 5.70 1LNH7/1/

(iii) 50 to 15,000 Hertz First 1/4 mile or fraction thereof 15.00 1LG7Y/1/ Each additional 1/4 mile or fraction thereof 6.25 1LNH8/1/

/1/ Additional codes appear in departmental practices.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 37 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.5 Series 6000 Channels (cont’d)

C. Rates (cont’d)

2. Local Service Area Channels (cont’d)

a. Where the stations are on non-continuous property (cont'd)

Monthly Nonrecurring Rate Charge USOC

(2) Multipoint channel, per channel Plus - $ 7.50 - 677 Circuit rate per section, each 1/4 mile, or fraction thereof

(a) Non-equalized 4.80 - 1LGUY/1/ (b) Equalized with approximate frequency range of (i) l00 to 5,000 Hertz 5.30 - 1LG5R/1/ (ii) 50 to 8,000 Hertz 5.70 - 1LG8R/1/ (iii) 50 to l5,000 Hertz 6.25 - 1LG1R/1/

Distribution 140.75 $864.10 67R

(3) Where the necessary facilities are not available and cannot be provided by the Company without incurring abnormal expense, the applicant shall also be required to pay such portion of the abnormal expense, in excess of the nonrecurring charge, incurred by the Company in providing such facilities.

/1/ Additional codes appear in departmental practices.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 38 SECTION 2 - Channel / Analog Private Line (APL) Services

1. CHANNELS (cont'd)

1.2 Classification and Rates (cont'd)

1.2.5 Series 6000 Channels (cont’d)

C. Rates (cont’d)

3. Moves and Changes

Equalization charge

Nonrecurring Charge

Each two point channel and each section of a multi-point channel or two such channels or sections between the same points and equalized at the same time $100.35

4. Amplifiers

Amplifiers, where required, will be furnished with local or local service area channels at rates or charges based upon costs incurred.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 39 SECTION 2 - Channel / Analog Private Line (APL) Services

2. ALTERNATE USE ARRANGEMENTS (cont'd)

Subject to the provisions in Section 1 preceding, the Company will provide private line service to permit different types of transmission on an alternate use basis. The type of transmission for which such service may be used and the charges applicable for such use are as set forth below. The customer must provide a transfer key to permit the customer to switch from one type of operation to another. Generally only one type of operation can be used at one time. Regulations applicable to a particular type of operation apply during the period the service is used for that type of operation. The alternate use charges specified are in addition to all other charges applicable for the type of channel required. The charges applicable for the type of channel are those specified for monthly service.

2.1 Series 1000 Channels

A. Alternate use of Teletypewriter up to 75 Bauds and Remote Metering, Supervisory control and Miscellaneous Signaling Purposes (Type 1001 and Type 1002A)

1. Channel type required: 1002B/1002C/1005

2. This alternate use, furnished only where channel terminal facilities are provided by the Company, is available on two point services. On services involving more than two points, it will be permitted where facility conditions permit.

Monthly Nonrecurring Rate Charge USOC

3. Alternate use, per termination $ 3.05 $39.20 TYW/1/

4. Additional facilities required on multipoint service will be furnished based upon costs incurred by the Company.

B. Alternate use of Teletypewriter up to 75 Bauds and Data up to 75 Bauds

1. Channel type required: 1002B/1002C/1005

2. This alternate use is available on two-point half duplex service only. It may be provided for the same or lesser grade of transmission

3. Each station arranged for alternate use 46.15 - TYV/1/

/1/ Additional codes appear in departmental practices.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 40 SECTION 2 - Channel / Analog Private Line (APL) Services

2. ALTERNATE USE ARRANGEMENTS (cont’d)

2.2 Series 2000 Channels (cont’d)

A. Alternate use of Voice and Remote Metering, Supervisory Control and Miscellaneous Signaling Purposes (Type 1001, 1002A and 3001)

1. Channel type required: 2001

2. This alternate use, furnished only where channel terminal facilities are provided by the Company, is available on two-point services. On services involving more than two points alternate use will be permitted where facilities permit.

3. For rate and charge, see 2.1.A preceding.

4. Additional facilities required on multipoint service, if not detrimental to any of the services furnished by the Company, will be furnished based upon costs incurred.

B. Alternate use of Voice and Teletypewriter up to 75 Bauds

1. Channel type required: 2001

2. This alternate use is available on two point half duplex services. On services involving more than two points, it will be permitted where facility conditions permit.

3. For monthly rate, see 2.1.B preceding.

4. Additional facilities required on multipoint service, if not detrimental to any of the services furnished by the Company, will be furnished based upon costs incurred.

C. Alternate use of Voice and Teletypewriter up to 150 Bauds

1. Channel type required: 2001

2. This alternate use is available on half-duplex interexchange two-point services. Where such services involve more than two points, alternate use is permitted where facility conditions permit.

3. For monthly rate, see 2.1.B preceding.

4. Additional facilities required on multipoint service, if not detrimental to any of the services furnished by the Company, will be furnished based upon costs incurred.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 41 SECTION 2 - Channel / Analog Private Line (APL) Services

2. ALTERNATE USE ARRANGEMENTS (cont'd)

2.2 Series 2000 Channels (cont’d)

D. Alternate use of Voice and Data up to 75 Bauds

1. Channel type required: 2001

2. This alternate use is available on half-duplex interexchange two point services only.

3. For monthly rate, see 2.1.B preceding.

E. Voice private line service used alternately as interexchange circuit in connection with Foreign Exchange Service

1. Channel type required: 2001

2. Foreign exchange operation is available only between two points on interexchange private line service.

3. In addition to the rates and charges specified in this Guidebook for private line service, this alternate use arrangement requires the application of regulations, rates and charges for foreign exchange service (except the rates and charges related to the interexchange circuits) set forth in Part 4, Section 3 of this Guidebook (or P.U.C.O. Tariff No. 20), plus the following:

Monthly Nonrecurring Rate Charge USOC

Manual Operation

a. Each station of private line service connected for alternate use $40.40 $21.05 37J Type 1001 control channel, per transfer key See 1.2.4 preceding

b. Foreign exchange service intercept channel between the central office from which the foreign exchange service is furnished and the customer's premises, at rates specified in Part 4, Section 3 of this Guidebook (or P.U.C.O. Tariff No. 20). In lieu of an intercept channel, at the customer's option, trunk make busy equipment may be provided on the exchange service line under the provisions of Part 8, Section 8 of this Guidebook (or P.U.C.O. Tariff No. 20).

(1) Circuit busy visual indicating arrangement 34.60 528.35 37H (2) Type 1001 control channel per arrangement See 1.2.4 preceding

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 42 SECTION 2 - Channel / Analog Private Line (APL) Services

2. ALTERNATE USE ARRANGEMENTS (cont'd)

2.3 Series 3000 Channels

A. Alternate Use - Voice and Data - Type 3002

1. Channel type required: 3002

2. This alternate use is available on interexchange two point services only.

3. Alternate use, per station Monthly Nonrecurring Rate Charge USOC

Duplex $5.40 $70.35 3AG

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 43 SECTION 2 - Channel / Analog Private Line (APL) Services

3. CHANNEL CONDITIONING

3.1 Channel conditioning is provided on Types 2001 and 3002 channels

Monthly Nonrecurring Rate Charge USOC A. Type C1 conditioning 1. On a two point or multipoint channel within the same exchange area, each channel $ 30.00 $25.40 QA9 2. On a two point or multipoint channel with stations in 2 exchange areas a. First station in an exchange area 30.00 25.40 QAB b. Additional stations and additional terminations in the same exchange areas as the first station, each 17.60 25.40 QAC 3. On a multipoint channel with stations in 3 or more exchange areas a. First station in an exchange area 60.00 61.15 QAD b. Additional stations and additional terminations in the same exchange area as the first station, each 17.60 25.40 QAE

B. Type C2 conditioning 1. On a two point or multipoint channel within the same exchange area, each channel 110.75 61.15 QAF 2. On a two point or multipoint channel with stations in 2 exchange areas a. First station in an exchange area 110.75 61.15 QAG b. Additional stations and additional terminations in the same exchange areas as the first station, each 17.60 25.40 QAH 3. On a multipoint channel with stations in 3 or more exchange areas a. First station in an exchange area 140.75 125.75 QAJ b. Additional stations and additional terminations in the same exchange area as the first station, each 17.60 25.40 QAK

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 44 SECTION 2 - Channel / Analog Private Line (APL) Services

3. CHANNEL CONDITIONING (cont’d)

3.1 Channel conditioning is provided on Types 2001 and 3002 channels (cont'd)

C. Type C4 conditioning

Type C4 conditioning is limited to channels with a maximum of 3 terminations, i.e., a two point channel with 1 additional termination or a 3 point multipoint Channel without additional terminators. One termination is designated by the customer as the point and each of the other 2 terminations.

Monthly Nonrecurring Rate Charge USOC

a. On a channel within the same exchange area, each channel $166.15 $125.75 QA3 b. On a channel between exchange areas, each station or termination 166.15 125.75 QA7

D. Type D1 (high performance) conditioning

Type D1 (high performance) conditioning for Type 3002 duplex channels

Monthly Nonrecurring Rate Charge USOC

On a two point channel not arranged for switching, each channel 45.00 281.50 QHA

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 1 SECTION 3 - Digital Private Line Services

1. BASE RATE SERVICE

A. Description

Base Rate Service provides for the simultaneous two-way transmission of synchronous digital signals at speeds of 2.4, 4.8, 9.6, 19.2, 56, or 64 Kbps. The service is available in either two- point or multi-point configurations, except for 64 Kbps service which is available only in a two- point configuration. The service is available between:

• Customer-designated premises.

• Customer-designated or Other Telecommunications Carriers (OTC) premises to the premises of an OTC for connection to the services or facilities of the OTC.

• Company wire centers for interconnecting Base Rate Services, 128, 256 and 384 Services, DS1 Service and DS3 Service channels of two NRS systems via channel mileage and channel mileage terminations.

• Company wire centers for interconnecting central office multiplexers.

• Customer-designated premise and a Company wire center;

- where multiplexing, bridging, hubbing, or cross-connection functions are performed. - for connection to Optical Interconnection Service via central office multiplexing. - for connection to Network Reconfiguration Service (NRS).

Multi-point bridging is an optional broadcast polling arrangement which consists of a single master station and two or more remote stations. Transmissions from the master station are received by all remote stations. Transmissions from the remote stations are received only by the master station.

For the optional secondary channel feature, the following transmission speeds as they relate to Base Rate Service apply:

Base Rate Service Secondary Channel 2.4 Kbps 133.0 Bps 4.8 Kbps 266.0 Bps 9.6 Kbps 533.0 Bps 19.2 Kbps 1.066 Kbps 56.0 Kbps 2.66 Kbps

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 2 SECTION 3 - Digital Private Line Services

1. BASE RATE SERVICE (cont’d)

B. Definitions

Multipoint Bridging This capability provides communications between three or more Base Rate Service locations.

Secondary Channel Secondary channel provides a companion channel over the same facility used to provide the primary channel, but at a lower bit rate.

C. Terms and Conditions

1. Multi-point bridging for Base Rate Services at speeds of 2.4, 4.8, 9.6, 19.2 and 56 Kbps are only available from appropriately equipped wire centers. Customers must choose their bridging locations from those equipped offices. A service inquiry must be made to determine availability of service.

2. Multi-point bridging is not available for Base Rate Service at 64 Kbps.

3. For multi-point bridging, the mileage to be used in determining the monthly rate for the channel mileage is calculated on the airline distance between the serving wire center of each customer designated premises and a wire center bridging location, plus the airline distance between multiple bridging locations, where applicable. When a multi-point service is connected to a central office multiplexer, the mileage calculation will also include the airline distance between a bridging location and a central office multiplexer location.

4. Base Rate Service is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction charges may apply.

5. For optional Secondary Channel:

• Secondary channel is not available with 64 Kbps service.

• While the primary and secondary channels operate independent of each other, they must co-terminate in common customer equipment.

• When a multi-point circuit is provisioned to utilize secondary channel, all stations on the multi-point circuit must be equipped with secondary channel capability.

• The secondary and primary channels operate independently of each other, over the same facilities, and must be co-terminated in customer common equipment.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 3 SECTION 3 - Digital Private Line Services

1. BASE RATE SERVICE (cont’d)

D. Features

1. Optional Features

Network Reconfiguration Service Base Rate Service is available for use with Network Reconfiguration Service.

Central Office Multiplexing and Cross Connect Services These optional services are available with Base Rate Service. Refer to Central Office Multiplexing and Cross Connect Services later in this Section.

Error Correction This feature is available in conjunction with an Base Rate Service channel operating at a speed of 2.4, 4.8, 9.6 or 19.2 Kbps. It is available in either point-to-point or multipoint configurations, except for 19.2 Kbps service which is available only in a point-to-point configuration.

Multi-Point Bridging Provides for communications capability between three or more Base Rate Service locations.

Secondary Channel This feature is available in conjunction with an Base Rate channel operating at a speed of 2.4, 4.8, 9.6, 19.2 or 56 Kbps (considered the primary channel) and provides a companion channel over the same facility used to provide the primary channel, but at a lower speed.

Shared Network Arrangement Base Rate Service is available under a Shared Network Arrangement.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 4 SECTION 3 - Digital Private Line Services

1. BASE RATE SERVICE (cont’d)

E. Technical References

Performance parameters for Base Rate Service may be found in the Technical References listed below.

All signals generated by Network Channel Terminating Equipment (NCTE) must meet the signal and format constraints contained in Telcordia Technologies (formerly known as Bellcore) Publication GR-54-CORE. This document also contains the specifications for Clear Channel Capability.

Subject Technical Reference

Ameritech OPTINET 64 Interface Specifications AM TR-OAT-000070

Ameritech Digital Service Transmission Parameters AM TR-TMO-000101

Digital Data Special Access Service Transmission Parameters TR-NWT-000341 (Telcordia) and Interface Combinations

High-Capacity Digital Service (1.544 Mbps) Interface Generic Requirements for End Users

The Technical Reference(s) can be obtained from:

APEX Support Team (734) 523-7348

The Telcordia Publication(s) can be obtained from:

Telcordia Technologies, Inc. 8 Corporate Place, PYA 3A-184 Piscataway, New Jersey 08854-4156

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 5 SECTION 3 - Digital Private Line Services

1. BASE RATE SERVICE (cont'd)

F. Prices

1. Service Elements (cont’d) Nonrecurring Description /Billing Code/ Charge

Administrative Charge - per order /ORCMX/ $ 60.00

Design and Central Office Connection Charge - per circuit /NRBCL/ 187.00

Customer Connection Charge - per termination /NRBBL/ 240.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 7 SECTION 3 - Digital Private Line Services

1. BASE RATE SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont’d)

Description/Billing Code/ Nonrecurring Charge

Optional Features and Functions

Shared Network Arrangement - processing charge, per order /NRBOP/ $36.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 8 SECTION 3 - Digital Private Line Services

1. BASE RATE SERVICE (cont'd)

F. Prices (cont'd)

2. Payment Plans

• Month to Month Base Rate Service is available on a month to month basis.

• Term Payment Plans/1/ Base Rate Service is available under the Term Payment Plan (TPP) whereby customers must select either a 12, 36 or 60 month period. After the selected Term Payment Plan period is satisfied, the monthly rate will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A Single Payment Option is available for this service. Refer to Term Payment Plans - Single Payment Option in Part 15, Section 1.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. The termination charge for all TPP terms/1/ for Base Rate Service will be calculated as described in Term Payment Plans - Termination Charges in Part 15, Section 1.

4. Credit Allowance

A credit allowance will be given for failure to meet the installation interval service date or for interruption of service. Refer to Credit Allowances in Part 15, Section 1 for calculating credit allowances.

/1/ Effective December 1, 2006, Term Payment Plans (TPP) for Base Rate Service are grandfathered. Existing customers may remain on their current plan until the existing term expires. Upon expiration, customers will be charged the current monthly rates.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 9 SECTION 3 - Digital Private Line Services

2. 128, 256 and 384 SERVICE

A. Description

128, 256 and 384 Service provides for the simultaneous two-way transmission of a serial, bipolar, return-to-zero, isochronous digital signal at speeds of 128, 256 and 384 Kbps. The service is available in a two-point configuration only between;

• Two customer-designated premises.

• A customer designated premise and a Company wire center where cross-connection or hubbing is performed.

• A customer designated premise and a Company wire center for termination in a DS3 or DS1/128, 256 or 384 Central Office Multiplexer, NRS system, or for connection to Optical Interconnection Service.

• Two Company offices when connecting two NRS systems via Base Rate Service, 128, 256 or 384 Service, DS1 Service, and DS3 Service channel mileage and channel mileage terminations to interconnect Base Rate Services, 128, 256 or 384 Services, DS1 Service, DS3 service channels included in the customer’s database for the NRS.

B. Definitions

DS1 A service which provides for the simultaneous two-way transmission of a serial, bipolar, return-to- zero, isochronous digital signal at a terminating bit rate of 1.544 megabits per second (Mbps). Timing is provided by the Company through the Company’s facilities to the customer in the receiving bit stream.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 10 SECTION 3 - Digital Private Line Services

2. 128, 256 and 384 SERVICE (cont’d)

C. Terms and Conditions

1. 128, 256 and 384 Service is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction charges may apply.

2. Rate Zone Wire Center Assignment Each Company wire center has been assigned to a Rate Zone. A table listing all Rate Zone assignments can be found in Part 15, Section 1, Paragraph V.

D. Features

1. Optional Features

Network Reconfiguration Service 128, 256 and 384 Service is available for use with Network Reconfiguration Service.

Central Office Multiplexing and Cross Connect Services These optional services are available with 128, 256 and 384 Service. Refer to Central Office Multiplexing and Cross Connect Services later in this Section.

Shared Network Arrangement 128, 256 and 384 Service is available for connection to a host’s central office multiplexer.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 11 SECTION 3 - Digital Private Line Services

2. 128, 256 and 384 SERVICE (cont’d)

E. Technical References

Performance parameters for 128, 256 and 384 Service may be found in the Technical References listed below.

All signals generated by Network Channel Terminating Equipment (NCTE) must meet the signal and format constraints contained in Telcordia Technologies (formerly known as Bellcore) Publication GR-54-CORE. This document also contains the specifications for Clear Channel Capability.

Subject Technical Reference

Service Description and Interface AM TR-TMO-000106 Requirements for Ameritech FT-1 Digital Service

High-Capacity Digital Service (1.544 Mbps) GR-54-CORE (Telcordia) Interface Generic Requirements for End Users

The Technical Reference(s) can be obtained from:

APEX Support Team (734) 523-7348

The Telcordia Publication(s) can be obtained from:

Telcordia Technologies, Inc. 8 Corporate Place, PYA 3A-184 Piscataway, New Jersey 08854-4156

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 12 SECTION 3 - Digital Private Line Services

2. 128, 256 and 384 SERVICE (cont’d)

F. Prices

1. Service Elements

Description/Billing Code/ Nonrecurring Charge

Administrative Charge/1/ - per order Zone 1 /NRBA1/ $ 60.00 Zone 2 /NRBA2/ 60.00 Zone 3 /NRBA3/ 60.00

Design and Central Office Connection Charge/1/ - per circuit Zone 1 /NRBD1/ 144.00 Zone 2 /NRBD2/ 144.00 Zone 3 /NRBD3/ 165.00

Customer Connection Charge/1/ - per termination Zone 1 /NRBB1/ 213.00 Zone 2 /NRBB2/ 213.00 Zone 3 /NRBB3/ 240.00

/1/ For those customers who choose a Term Payment Plan (TPP) period of 36 months or greater in length for new installations, the Administrative Charge, Design and Central Office Connection Charge and Customer Connection Charge will not apply. However, customers requesting termination of service prior to the completion of a minimum of 36 months of a 36 month or greater TPP term will become liable for payment of Nonrecurring Charges described above.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 13 SECTION 3 - Digital Private Line Services

2. 128, 256 and 384 SERVICE (cont’d)

F. Prices (cont’d)

1. Service Elements (cont’d)

Monthly Payments Term Payment Plans Description /Billing Code/ 12 Months 36 Months 60 Months Monthly

Local Distribution Channel - per point of termination

Zone 1 /TZ4X1/ $265.00 $157.50 $140.00 $395.00 Zone 2 /TZ4X2/ 275.00 162.50 145.00 415.00 Zone 3 /TZ4X3/ 290.00 175.00 155.00 440.00

Channel Mileage Termination - per point of termination

Zone 1 /CZ4X1/ 50.00 Zone 2 /CZ4X2/ 50.00 Zone 3 /CZ4X3/ 50.00

Channel Mileage - per mile

Zone 1 /1YZX1/ 12.00 Zone 2 /1YZX2/ 12.00 Zone 3 /1YZX3/ 12.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 14 SECTION 3 - Digital Private Line Services

2. 128, 256 and 384 SERVICE (cont’d)

F. Prices (cont’d)

1. Service Elements (cont’d)

Nonrecurring Description /Billing Code/ Charge

Optional Features and Functions

Shared Network Arrangement - processing charge, per order /NRBOP/ $36.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 15 SECTION 3 - Digital Private Line Services

2. 128, 256 and 384 SERVICE (cont'd)

F. Prices (cont’d)

2. Payment Plans

• Month to Month 128, 256 and 384 Service is available on a month to month basis.

• Term Payment Plans 128, 256 and 384 Service is available under the Term Payment Plan (TPP) whereby customers must select either a 12, 36 or 60 month period. After the selected Term Payment Plan period is satisfied, the monthly rate will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A Single Payment Option is available for this service. Refer to Term Payment Plans - Single Payment Option in Part 15, Section 1.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. The termination charge for all TPP terms for 128, 256 and 384 Service will be calculated as described in Term Payment Plans - Termination Charges in Part 15, Section 1.

4. Credit Allowance

A credit allowance will be given for failure to meet the installation interval service date or for interruption of service. Refer to Credit Allowances in Part 15, Section 1 for calculating credit allowances.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 16 SECTION 3 - Digital Private Line Services

3. DS1 SERVICE

A. Description

DS1 Service provides for the simultaneous two-way transmission of a serial, bipolar, return-to- zero, isochronous digital signal at a terminating bit rate of 1.544 megabits per second (Mbps).

The service is available in a point-to-point configuration between;

• Two customer-designated premises

• A Company wire center or customer-designated premise and a Company wire center where multiplexing, hubbing or cross-connection functions are performed

• Two Centrex locations

• The patron of an Interconnector and a Company wire center for connection to Optical Interconnection Service

• A customer-designated or Other Telecommunications Carriers (OTC) premises to the premises of a OTC for connection to the services or facilities of the OTC

• A customer-designated premise and an Network Reconfiguration Service (NRS) system location, or between two NRS system locations

• A customer-designated premise and a Company wire center;

- For access to Centrex

- For digital trunk access with Digital Trunking Service or ISDN Prime Service

- For interconnection to Voice Gateway type network equipment

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 17 SECTION 3 - Digital Private Line Services

3. DS1 SERVICE (cont'd)

B. Definitions

Extended Superframe (ESF) Format A signaling framing format for DS1 services consisting of frames with 192 information digit time slots preceded by a one digit time slot containing a Frame (F) bit. The ESF framing format consists of 24 consecutive frames as above in a structure where the F bits are divided into three groups used for framing, monitoring and datalink functions according to detailed specifications contained in industry standard ANSI T1.403-1995.

Superframe (SF or D4) Format A signal framing format for DS1 services consisting of frames with 192 information digit time slots preceded by a one digit time slot containing a Frame (F) bit. The SF or D4 framing format consists of twelve consecutive frames as above in a structure where the F bits are used for framing only and are divided into two groups used for terminal framing and signaling framing functions according to detailed specifications contained in industry standard ANSI T1.403-1995.

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PART 15 - Dedicated Telecommunications Services Original Sheet 18 SECTION 3 - Digital Private Line Services

3. DS1 SERVICE (cont'd)

C. Terms and Conditions

1. DS1 Service is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction charges may apply.

2. Rate Zone Wire Center Assignment

Each Company wire center has been assigned to a Rate Zone. A table listing all Rate Zone assignments can be found in Part 15, Section 1, Paragraph V.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 19 SECTION 3 - Digital Private Line Services

3. DS1 SERVICE (cont'd)

D. Features

1. Optional Features

Network Reconfiguration Service DS1 Service is available for use with Network Reconfiguration Service.

Central Office Multiplexing and Cross Connect Services These optional services are available with DS1 Service. Refer to Central Office Multiplexing and Cross Connect Services later in this Section.

Clear Channel Capability Is an arrangement which allows a customer to transport 1.536 Mbps of information on a DS1 Service with no constraint on the quantity or sequence of one and zero bits. Clear Channel Capability is a required option when 64 Kbps channels are multiplexed onto DS1 Service. Clear Channel Capability is only provided on non-channelized circuits between two customer premises where facilities permit.

Extended Super Frame Is available as a non-chargeable, customer specified option.

Shared Network Arrangement DS1 Service is available under a Shared Network Arrangement.

Special Facility Routing – Local Distribution Channel (LDC) Diversity Special Facility Routing – LDC Diversity provides a transmission path for services between the customers designated premises (exclusive of the entrance facility) and the serving wire center that is diverse from the normal transmission path. With this arrangement, one or more services will be provisioned over the normal route and one or more services will be provisioned over the diverse route. Special Facility Routing must be ordered at the same time as the DS1 Service is ordered. There are both nonrecurring and monthly charges associated with Special Facility Routing and they are in addition to the normal DS1 Service charges. The transmission specifications and credit allowances for service interruption of services provided via a special facility routing arrangement are the same as for services using normal routing. The minimum service period for a DS1 Service ordered with Special Facility Routing is 12 months. Termination Charges will apply to service terminated prior to the contracted period. The termination charge for Special Facility Routing will be calculated as described in Term Payment Plans - Termination Charges in Part 15, Section 1.

Super Frame Is available as a non-chargeable, customer specified option.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 20 SECTION 3 - Digital Private Line Services

3. DS1 SERVICE (cont'd)

E. Technical References

Performance parameters for DS1 Service may be found in the Technical References listed below.

All signals generated by Network Channel Terminating Equipment (NCTE) must meet the signal and format constraints contained in Telcordia Technologies (formerly known as Bellcore) Publication GR-54-CORE. This document also contains the specifications for Clear Channel Capability.

Subject Technical Reference

Digital Service Transmission Parameters AM TR-TMO-000101

High Capacity Digital Service (1.544Mbps) GR-54-CORE (Telcordia) Interface Generic Requirements For End Users

High Capacity Digital Special Access GR-342-CORE (Telcordia) Service Transmission Parameter Limits and Interface Specifications

The Technical Reference(s) can be obtained from:

APEX Support Team (734) 523-7348

The Telcordia Publication(s) can be obtained from:

Telcordia Technologies, Inc. 8 Corporate Center, PYA 3A-184 Piscataway, New Jersey 08854-4156

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3. DS1 SERVICE (cont'd)

F. Prices

1. Service Elements

Nonrecurring Description /Billing Code/ Charge

Administrative Charge/1/ - per order Zone 1 /NRBA1/ $ 60.00 Zone 2 /NRBA2/ 60.00 Zone 3 /NRBA3/ 60.00

Design and Central Office Connection Charge/1/ - per circuit Zone 1 /NRBD1/ 144.00 Zone 2 /NRBD2/ 144.00 Zone 3 /NRBD3/ 144.00

Customer Connection Charge/1/ - per termination Zone 1 /NRBB1/ 213.00 Zone 2 /NRBB2/ 213.00 Zone 3 /NRBB3/ 240.00

/1/ For those customers who choose a Term Payment Plan (TPP) period of 24 months or greater in length for new installations, the Administrative Charge, Design and Central Office Connection Charge and Customer Connection Charge will not apply. However, customers requesting termination of service prior to the completion of a minimum of 24 months of a 24-month or greater TPP term will become liable for payment of Nonrecurring Charges described above.

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3. DS1 SERVICE (cont'd)

F. Prices (cont’d)

1. Service Elements (cont’d)

Nonrecurring Description /Billing Code/ Charge

Optional Features and Functions

Clear Channel Capability - per circuit arranged Zone 1 /CLYX1/ $280.00 Zone 2 /CLYX2/ 280.00 Zone 3 /CLYX3/ 280.00

Shared Network Arrangement - processing charge, per service order Zone 1 /SRNX1/ 36.00 Zone 2 /SRNX2/ 36.00 Zone 3 /SRNX3/ 36.00

Nonrecurring Description /Billing Code/ Charge Monthly

Special Facility Routing – Local Distribution Channel (LDC) Diversity - per order /NRBOQ/ $525.00

- per channel First Channel $65.00 Zone 1 /DJV/ 65.00 Zone 2 /DJV/ 65.00 Zone 3 /DJV/

Additional Channel Zone 1 /DJW/ 35.00 Zone 2 /DJW/ 35.00 Zone 3 /DJW/ 35.00

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3. DS1 SERVICE (cont'd)

F. Prices (cont’d)

2. Payment Plans

• Month to Month DS1 Service is available on a month to month basis.

• Term Payment Plans DS1 Service is available under the Term Payment Plan (TPP) whereby customers must select either a 12, 24, 36 or 60 month period. After the selected Term Payment Plan period is satisfied, the monthly rate will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A Single Payment Option is available for this service. Refer to Term Payment Plans - Single Payment Option in Part 15, Section 1.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. The termination charge for all TPP terms for DS1 Service will be calculated as described in Term Payment Plans - Termination Charges in Part 15, Section 1.

4. Credit Allowance

A credit allowance will be given for failure to meet the installation interval service date or for interruption of service. Refer to Credit Allowances in Part 15, Section 1 for calculating credit allowances.

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4. DS3 SERVICE

A. Description

DS3 Service is a two-point dedicated service that provides for simultaneous two way transmission of serial, isochronous digital signals at a terminating bit rate of 44.736 Megabits per second (Mbps). The interface to the customer will be an electrical signal. The service is available in a point-to-point configuration between:

• Two customer-designated premises.

• A Company wire center or customer-designated premises and a Company wire center where multiplexing, hubbing or cross-connection functions are performed.

• Company wire centers for termination in central office multiplexers.

• The patron of an Interconnector and a Company wire center for connection to Optical Interconnection Service.

• A customer-designated or Other Telecommunications Carriers (OTC) premises to the premises of an OTC for connection to services or facilities of the OTC.

• A customer-designated premises and a Network Reconfiguration Service (NRS) system location, or between two NRS system locations.

B. Definitions

Local Distribution Channel Provides interconnection between the Company Serving Wire Center (SWC) and the customer premises. Consists of two rates elements: DS3 Service Packages and DS3 Service Channels.

C. Terms and Conditions

In addition to the Terms and Conditions set forth in Part 15, Section 1, the following applies to DS3 Service.

1. Rate Zone Wire Center Assignment

Each Company wire center has been assigned to a Rate Zone. A table listing all Rate Zone assignments can be found in Part 15, Section 1, Paragraph V.

2. DS3 Service is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction charges may apply.

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4. DS3 SERVICE (cont'd)

D. Features

1. Optional Features

Network Reconfiguration Service (NRS) DS3 Service is available for use with Network Reconfiguration Service (NRS).

Central Office Multiplexing and Cross Connect Services These optional services are available with DS3 Service. Refer to Central Office Multiplexing and Cross Connect Services later in this Section.

Shared Network Arrangement A Shared Network Arrangement is available with DS3 Service.

Special Facility Routing – Local Distribution Channel (LDC) Diversity Special Facility Routing – LDC Diversity provides a transmission path for services between the customers designated premises (exclusive of the entrance facility) and the serving wire center that is diverse from the normal transmission path. With this arrangement, one or more services will be provisioned over the normal route and one or more services will be provisioned over the diverse route. Special Facility Routing must be ordered at the same time as the DS3 Service is ordered. There are both nonrecurring and monthly charges associated with Special Facility Routing and they are in addition to the normal DS3 Service charges. The transmission specifications and credit allowances for service interruption of services provided via a special facility routing arrangement are the same as for services using normal routing. The minimum service period for DS3 Service ordered with Special Facility Routing is 12 months. Termination Charges will apply to service terminated prior to the contracted period. The termination charge for Special Facility Routing will be calculated as described in Term Payment Plans - Termination Charges in Part 15, Section 1.

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4. DS3 SERVICE (cont'd)

E. Technical References

The technical specifications and compatible channel interfaces are set forth in the following technical publications:

Subject Technical Reference

Digital Service Transmission Parameters AM TR-TMO-000101

Service Description and Interface Reqt’s for OPTINET Optical AM TR-TMO-000072 Service

High Capacity Digital Special Access Service - Transmission GR-342-CORE (Telcordia) Parameter Limits and Interface Specifications

The Technical Reference(s) can be obtained from:

APEX Support Team (734) 523-7348

The Telcordia (formerly known as Bellcore) Publication(s) can be obtained from:

Telcordia Technologies, Inc. 8 Corporate Place, PYA 3A-184 Piscataway, New Jersey 08854-4156

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4. DS3 SERVICE (cont'd)

F. Prices

1. Service Elements

Nonrecurring Description /Billing Code/ Charge

Administrative Charge/1/ - per order

Zone 1 /NRBA1/ $ 60.00 Zone 2 /NRBA2/ 60.00 Zone 3 /NRBA3/ 60.00

Design and Central Office Connection Charge/1/ - per circuit

Zone 1 /NRBD1/ 456.00 Zone 2 /NRBD2/ 480.00 Zone 3 /NRBD3/ 480.00

Customer Connection Charge/1/ - per termination

Zone 1 /NRBB1/ 800.00 Zone 2 /NRBB2/ 880.00 Zone 3 /NRBB3/ 900.00

/1/ For those customers who choose a Term Payment Plan (TPP) period of 24 months or greater in length for new installations, the Administrative Charge, Design and Central Office Connection Charge and Customer Connection Charge will not apply. However, customers requesting termination of service prior to the completion of a minimum of 24 months of a 24-month or greater TPP term will become liable for payment of Nonrecurring Charges described above.

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4. DS3 SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Nonrecurring Description /Billing Code/ Charge

Optional Features and Functions

Shared Network Arrangement - processing charge, per order

Rate Zone 1 /SRNX1/ $37.50 Rate Zone 2 /SRNX2/ 37.50 Rate Zone 3 /SRNX3/ 37.50

Nonrecurring Description /Billing Code/ Charge Monthly

Special Facility Routing - Local Distribution Channel (LDC) Diversity

- per order /NRBOQ/ $525.00

- per channel First Channel Zone 1 /DVJ/ $700.00 Zone 2 /DVJ/ 700.00 Zone 3 /DVJ/ 700.00

Additional Channel Zone 1 /DVW/ 300.00 Zone 2 /DVW/ 300.00 Zone 3 /DVW/ 300.00

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4. DS3 SERVICE (cont'd)

F. Prices (cont'd)

2. Payment Plans (cont'd)

• Term Payment Plans DS3 Service is only available under the Term Payment Plan (TPP) whereby customers must select either a 12, 24, 36 or 60 month period. After the minimum period is satisfied, the monthly extension price will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A Single Payment Option is available for this service. Refer to Term Payment Plans - Single Payment Option in Part 15, Section 1.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. The termination charge for all TPP terms for DS3 Service will be calculated as described in Term Payment Plans - Termination Charges in Part 15, Section 1.

4. Credit Allowance

A credit allowance will be given for failure to meet the installation interval service date or for interruption of service. Refer to Credit Allowances in Part 15, Section 1 for calculating credit allowances.

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5. OC-n POINT-TO-POINT SERVICE

A. Description

OC-n Point-to-Point Service (OC-n channels) provides high speed synchronous optical fiber- based full duplex data transmission capabilities. OC-n channels may be either channelized (non-concatenated) or non-channelized (concatenated) designated as OC-nc. This service provides optical data transmission with the following characteristics:

• OC-3/OC-3c Service provides channels operating at the terminating bit rate of 155.52 Mbps • OC-12/OC-12c Service provides channels operating at the terminating bit rate of 622.08 Mbps • OC-48/OC-48c Service provides channels operating at the terminating bit rate of 2488.32 Mbps • OC-192/OC-192c Service provides channels operating at the terminating bit rate of 9953.28 Mbps

OC-n channels may be used to connect:

• A customer-designated premises to another customer-designated premises. • A customer-designated premises to a Company location where Add/Drop Multiplexing, Add/Drop Functions and/or cross-connections are performed.

OC-n channels may be connected by:

• Using the appropriate OC-n Add/Drop Multiplexer (mux) along with the Add/Drop Function to an DS1 and/or DS3 at suitably equipped wire centers, i.e. non-concatenated, or • Using the full bandwidth premises to premises, i.e. concatenated.

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

A. Description (cont'd)

OC-n Point-to-Point Service, based on customer requirements, can be configured in any of the following ways:

OC-3 • Three STS-1 (Synchronous Transport Signals) channels which each contain: - One DS3 that is STS-1 mapped; - Up to 28 DS1s that are VT-mapped; - An STS-1 channel without constraint to payload mapping when the STS-1 channel does not terminate via an Add/Drop Function to DS1 or DS3 services within the Company network; • A single concatenated STS-3C channel • 1 Gbps Ethernet STS-1, 1v-2v

OC-12 • Twelve STS-1 channels which each contain: - One DS3 that is STS-1 mapped; - Up to 28 DS1s that are VT-mapped; - An STS-1 channel without constraint to payload mapping when the STS-1 channel does not terminate via an Add/Drop Function to DS1 or DS3 services within the Company network; • Four concatenated STS-3C channels; • From one to three STS-3C channels mixed with from three to nine STS-1 channels subject to utilization of the total OC-12 capacity; • A single concatenated STS-12C channel • 1 Gbps Ethernet STS-1, 1v-9v • 1 Gbps Ethernet STS-3c, 1v-3v

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

A. Description (cont'd)

OC-48 • Forty-eight STS-1 channels which each contain: - One DS3 that is STS-1 mapped; - Up to 28 DS1s that are VT-mapped; - An STS-1 channel without constraint to payload mapping when the STS-1 channel does not terminate via an Add/Drop Function to DS1 or DS3 services within the Company network; • Sixteen concatenated STS-3C channels; - From one to fifteen concatenated STS-3C channels mixed with from three to forty-five STS-1 channels subject to utilization of the total OC-48 capacity; • Four concatenated STS-12C channels; - From one to three concatenated STS-12C channels mixed with from twelve to thirty-six STS-1 channels subject to utilization of the total OC-48 capacity; - From one to three concatenated STS-12C channels mixed with from four to twelve concatenated STS-3C channels, also mixed with from three to thirty-three STS-1 channels subject to utilization of the total OC-48 capacity; - From one to three concatenated STS-12C channels mixed with from one to eleven concatenated STS-3C channels, also mixed with from three to thirty-three STS-1 channels subject to utilization of the total OC-48 capacity • 1 Gbps Ethernet STS-1, 1v-21v • 1 Gbps Ethernet STS-3c, 1v-7v

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

A. Description (cont'd)

OC-192

One hundred ninety two interleaved STS-1 channels which each contain:

• One DS3 that is STS-1 mapped;

• Up to 28 DS1s that are VT-mapped;

• An STS-1 channel without constraint to payload mapping when the STS-1 channel does not terminate via an Add/Drop Function to DS1 or DS3 services within the Company network;

Sixty four interleaved concatenated STS-3C channels:

• From one to sixty three interleaved concatenated STS-3C channels mixed with from three to one hundred and eighty nine STS-1 channels, subject to utilization of the total STS-192 capacity;

Sixteen interleaved concatenated STS-12C channels:

• From one to fifteen interleaved concatenated STS-12C channels mixed with from twelve to one hundred and eighty STS-1 channels subject to utilization of the total STS-192 capacity;

• From one to fifteen interleaved concatenated STS-12C channels mixed with from four to sixty concatenated STS-3C channels subject to utilization of the total STS-192 capacity.

• From one to fifteen interleaved concatenated STS-12C channels mixed with from one to fifty nine concatenated STS-3C channels, also mixed with from three to one hundred and seventy seven STS-1 channels subject to utilization of the total STS-192 capacity.

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

A. Description (cont'd)

OC-192 (cont’d)

Four interleaved concatenated STS-48C channels:

• From one to three interleaved concatenated STS-48C channels mixed with from forty eight to one hundred and forty four STS-1 channels subject to utilization of the total STS-192 capacity; • From one to three interleaved concatenated STS-48C channels mixed with from sixteen to forty eight STS-3c channels subject to utilization of the total STS-192 capacity; • From one to three interleaved concatenated STS-48C channels mixed with from four to twelve STS-12c channels subject to utilization of the total STS-192 capacity; • From one to three interleaved concatenated STS-48C channels mixed with from one to forty seven concatenated STS-3C channels, also mixed with from three to one hundred and forty one STS-1 channels subject to utilization of the total STS-192 capacity. • From one to three interleaved concatenated STS-48C channels mixed with from one to eleven concatenated STS-12C channels, also mixed with from twelve to one hundred and thirty two STS-1 channels subject to utilization of the total STS-192 capacity. • From one to three interleaved concatenated STS-48C channels mixed with from one to eleven concatenated STS-12C channels, also mixed with from four to forty four concatenated STS-3c channels subject to utilization of the total STS-192 capacity. • From one to three interleaved concatenated STS-48C channels mixed with from one to eleven concatenated STS-12C channels, also mixed with from three to one hundred and twenty nine STS-1 channels subject to utilization of the total STS-192 capacity.

1 Gbps Ethernet STS-1, 1v-21v 1 Gbps Ethernet STS-3c, 1v-7v

OC-n

The customer is responsible via the ordering process to identify what STS signal configuration is to be contained in each OC-n Point-to-Point service connection and each STS-1, STS-3 and/or STS-12 payload content. This information is needed for routing and connection purposes in the network.

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

A. Description (cont'd)

Channel Configuration

OC-n Channels consist of Local Distribution Channels (LDCs), Interoffice Transport (which consists of a combination of Channel Mileage and Channel Mileage Terminations), and optional features and functions.

• OC-n Local Distribution Channels

OC-n Local Distribution Channels provide optical interconnection between a Company Serving Wire Center (SWC) and the customer premises.

The following types of LDCs are available:

Terminating Bit Rate Loop Format Data Transmission Format 155.52 Mbps 4 fiber Synchronous 622.08 Mbps 4 fiber Synchronous 2488.32 Mbps 4 fiber Synchronous 9953.28 Mbps 4 fiber Synchronous

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

B. Definitions

Interoffice Transport Interoffice Transport facilities, comprised of Channel Mileage Termination (CMT) and Channel Mileage (CM), provide the transmission paths between Serving Wire Centers associated with two customer-designated premises or between a Serving Wire Center associated with a customer premises and a Company Hub location. Four interoffice transport types are available: OC-3 transport at a bit rate of 155.52 Mbps, OC-12 transport at a bit rate of 622.08 Mbps, OC-48 transport at a bit rate of 2488.32 Mbps and OC-192 at a bit rate of 9953.28 Mbps.

OC-3/OC-3c LDCs are interconnected to OC-3 transport, OC-12/OC-12c LDCs are interconnected to OC-12 transport, OC-48/OC-48c LDCs are interconnected to OC-48 transport and OC-192/OC- 192c LDCs are interconnected to OC-192 transport.

In addition, interoffice transport can be connected between wire centers with Add/Drop Multiplexing at a lower OC-n speed than the LDC, if the transport is between a lower speed Add/Drop Function and: • another lower speed Add/Drop Function; • another lower speed Local Distribution Channel; • a lower speed Dedicated Ring Port; • a lower speed Cross-Connect;

All of the above terminations must be the same speed as the transport.

SONET (Synchronous Optical Network) SONET is a set of international standards for fiber optic based transmission systems. SONET defines standard optical carrier transmission rates and utilizes a modular multiplexing approach based on the application of Synchronous Transport Signals (STS).

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

C. Terms and Conditions

1. The customer is responsible via the ordering process to identify what STS signal configuration is to be contained in each OC-n service connection and each STS-1, STS-3 and/or STS-12 payload content. This information is needed for routing and connection purposes in the network.

2. When OC-n Point-to-Point Service is provided, the customer is responsible for providing the Optical Line Termination (OLT) at the customer's premises. The OLT supplied at the customer premises must be compatible with the OLT used by the Company in the Serving Wire Center.

3. All LDCs comprising a channel must have the same terminating bit rate unless multiplexing is performed at a Company Hub location.

4. The options in Add/Drop Multiplexing and Add/Drop Function cannot be used with OC-3 or OC- 12 Service configured by the customer to contain a single non-channelized (concatenated) STS- 3C or STS-12C signal, respectively.

5. Service Rearrangement Charges

• If a change involves the rearrangement of an OC-n Point-to-Point Service (non-channelized) to an arrangement with an Add/Drop Multiplexer and an Add/Drop Function or vice-versa, an Administrative Charge, Design and Central Office Connection Charge and Customer Connection Charge will apply. • A change in payload mapping within an OC-n package will require a redesign of the OC-n Point-to-Point Service, and an Administrative Charge and Design and Central Office Connection Charge will apply.

6. When ordering the 1+1 Protection with Route Survivability option:

• The protect fiber will be charged on a distance sensitive basis, based on quarter route miles, from the customer premises to the serving wire. • Prior to confirming an order for service, the Company will provide a proposed route diagram to the customer. The diagram will include the number of quarter route miles and method used to support the number needed to provide the alternate route or route to the alternate wire center. In order to avoid compromising Route or Central Office Survivability information, the Company will provide this information only to the ordering customer. • Installation of the 1+1 Protection with Route Survivability option will not begin until the customer has accepted the proposed routing by the Company.

7. OC-n Point-to-Point Service is provided at the option of the Company where appropriate SONET facilities are available. If appropriate facilities are not available, Special Construction charges may apply.

8. The minimum service period for OC-n Point-to-Point Service is 12 months.

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

D. Features

1. Optional Features

OC-n Add/Drop Multiplexing An arrangement that allows an OC-n channel operating at a terminating speed of 155.52 Mbps, 622.08 Mbps, 2488.32 Mbps and 9953.28 Mbps respectively, to add/drop a lower speed channel by using this feature along with the Add/Drop Function as stated below.

OC-3 Add/Drop Multiplexing at a Company wire center will provide the capability to support the full Add/Drop Function capacity of OC-3 Service bandwidth with up to three DS3 Add/Drop Functions or equivalently up to three groups of 28 DS1 Add/Drop Functions.

OC-12 Add/Drop Multiplexing at a Company wire center will provide the capability to support the full Add/Drop Function capacity of OC-12 Service bandwidth with up to four OC-3 Add/Drop Functions or up to twelve DS3 Add/Drop Functions or equivalent combinations of OC-3 and DS3 Add/Drop Functions.

OC-48 Add/Drop Multiplexing at a Company wire center will provide the capability to support one quarter of the Add/Drop Function capacity of OC-48 Service bandwidth. Up to four OC-48 Add/Drop Multiplexing options may be provided with each supporting one OC-12 Add/Drop Function, or up to four OC-3 Add/Drop Functions or up to twelve DS3 Add/Drop Functions or equivalent combination of OC-3 and DS3 Add/Drop Functions.

OC-192 Add/Drop Multiplexing at a Company wire center will provide the capability to support full Add/Drop Function capacity of OC-192 Service bandwidth. Up to four OC-48 Add/Drop Multiplexing options, or up to 16 OC-12 add/drop functions, or up to 64 OC-3 add/drop functions or equivalent combinations of OC-48, OC-12 and OC-3 add/drop functions are supported.

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

D. Features (cont'd)

1. Optional Features (cont'd)

Add/Drop Function OC-n Point-to-Point Service is able to add or drop lower level signals as shown in the matrix following. The Add/Drop Function is offered at a circuit level. For example, if a customer wants to drop one DS3 signal from an OC-12 service, one Add/Drop Function charge for the DS3 would be applicable, in addition to the OC-12 Add/Drop Multiplexing charge.

An OC-n Point-to-Point Service is only able to add or drop the services that have been identified by payload content (mapped) within the bandwidth. DS1 mapped STS-1 signals are only able to connect to a DS1 and DS3 mapped STS-1 signals are only able to connect to a DS3. If a change is required it may be accomplished by the customer's CPE or through the current asynchronous environment for multiplexing of DS3 and DS1 Services. See Central Office (CO) Multiplexing for DS1 and DS3 Services.

ADD/DROP Function 1000 DS1 DS3 OC-3 OC-12 OC-48 BaseLX

OC-192 No/1/ Yes/2/ Yes Yes Yes Yes

OC-48 No/1/ Yes Yes Yes N/A Yes

OC-12 Yes Yes Yes N/A N/A Yes

OC-3 Yes Yes N/A N/A N/A Yes

/1/ To add/drop a DS1 from an OC-12 and/or OC-48, an intermediate step at either OC-3 or DS3 must be taken. To add/drop a DS1 from an OC-192, an intermediate step at OC-48 must be taken. /2/ Only the first 24 DS3s will be dropped directly off an OC-192, the 25th DS3 requires an OC-3, OC- 12 or OC-48 subtended shelf.

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

D. Features (cont'd)

1. Optional Features (cont'd)

1+1 Protection The base OC-n Point-to-Point Service is offered with four fibers in the same cable, but the protection card will only be activated when this option is ordered. This will allow customers to order protection if their CPE can accommodate it.

S SAME CABLE C W NI P C Working Fiber Pair E

Protect Fiber Pair

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

D. Features (cont'd)

1. Optional Features (cont'd)

1+1 Protection with Cable Survivability This option will provide 1+1 protection and additional loop survivability with the working fiber pair and protect fiber pair placed in separate cables within the same conduit.

DIFFERENT CABLE

NI Working Fiber Pair Cable 1

S C

W P

C E

Protect Fiber Pair Cable 2

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

D. Features (cont'd)

1. Optional Features (cont'd)

1+1 Protection with Route Survivability This option will provide 1+1 protection and offer additional protection from fiber cable cuts by routing the working fiber pair via the primary route and the protect fiber pair via a physically diverse alternate route.

This option will also assure 100 percent availability of the service. Any service interruption will result in a credit allowance as described in the Prices, Credit Allowances paragraph following.

DIFFERENT PHYSICAL PATH

NI Working Fiber Pair

S C W P C E

Protect Fiber Pair

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5. OC-n POINT-TO-POINT SERVICE (cont'd)

F. Prices

1. Service Elements

Nonrecurring Description /Billing Code/ Charge

Administrative Charge - per order OC-3/OC-3c Service 155.52 Mbps /ORCMX/ $ 60.00 OC-12/OC-12c Service 622.08 Mbps /ORCMX/ 60.00 OC-48/OC-48c Service 2488.32 Mbps /ORCMX/ 60.00 OC-192/OC-192c Service 9953.28 Mbps /ORCMX/ 60.00

Design and Central Office Connection Charge - per circuit OC-3/OC-3c Service 155.52 Mbps /NRBCL/ 375.00 OC-12/OC-12c Service 622.08 Mbps /NRBCL/ 375.00 OC-48/OC-48c Service 2488.32 Mbps /NRBCL/ 500.00 OC-192/OC-192c Service 9953.28 Mbps /NRBCL/ 2,250.00

Customer Connection Charge - per termination OC-3/OC-3c Service 155.52 Mbps /NRBBL/ 450.00 OC-12/OC-12c Service 622.08 Mbps /NRBBL/ 450.00 OC-48/OC-48c Service 2488.32 Mbps /NRBBL/ 600.00 OC-192/OC-192c Service 9953.28 Mbps /NRBBL/ 600.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 48 SECTION 3 - Digital Private Line Services

5. OC-n POINT-TO-POINT SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description 12 36 60 Monthly /Billing Code/ Months Months Months Extension

Local Distribution Channel - per point of termination

OC-3/OC-3c /TMECS/ $1,607.00 $ 1,368.00 $ 1,125.00 $ 1,607.00 OC-12/OC-12c /TMECS/ 4,000.00 3,400.00 2,800.00 4,000.00 OC-48/OC-48c /TMECS/ 8,000.00 6,800.00 5,600.00 8,000.00 OC-192/OC-192c /TMECS/ NA 20,400.00 16,800.00 29,400.00

Channel Mileage Termination - per point of Mileage Termination

OC-3 /CM6/ 469.00 399.00 375.00 469.00 OC-12 /CM6/ 700.00 595.00 560.00 700.00 OC-48 /CM6/ 1,575.00 1,420.00 1,340.00 1,575.00 OC-192/CM6/ NA 4,260.00 4,020.00 7,035.00

Channel Mileage - per mile

OC-3 /IL5XX/ 250.00 213.00 200.00 250.00 OC-12 /IL5XX/ 500.00 425.00 400.00 500.00 OC-48 /IL5XX/ 550.00 520.00 440.00 550.00 OC-192 /1L5XX/ NA 520.00 440.00 650.00

Optional Features

Add/Drop Multiplexing - per arrangement

OC-3 /MPECX/ 1,107.00 939.00 775.00 1,107.00 OC-12 /MPEDX/ 2,750.00 2,340.00 1,925.00 2,750.00 OC-48 /MXRFX/ 5,000.00 3,510.00 2,895.00 5,000.00 OC-192 /MXRGX/ NA 10,530.00 8,685.00 15,000.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 49 SECTION 3 - Digital Private Line Services

5. OC-n POINT-TO-POINT SERVICE (cont'd)

F. Prices (cont’d)

1. Service Elements (cont’d)

Description /Billing Code/ Nonrecurring Charge Monthly Price

Optional Features (cont'd)

Add/Drop Function OC-3 Service - per DS3 Add or Drop /MXJBX/ - $ 120.00 - per DS1 Add or Drop /MXJAX/ - 50.00 - per 1000BaseLX Ethernet /MX4LX/ - 500.00

OC-12 Service - per OC-3 Add or Drop /MXJCX/ - 150.00 - per DS3 Add or Drop /MXJBX/ - 120.00 - per 1000BaseLX Ethernet /MX4LX/ - 500.00

OC-48 Service - per OC-12 Add or Drop /MXJEX/ - 375.00 - per OC-3 Add or Drop /MXJCX/ - 150.00 - per DS3 Add or Drop /MXJBX/ - 120.00 - per 1000BaseLX Ethernet /MX4LX/ - 500.00

OC-192 Service - per OC-48 Add or Drop /MXJFX/ - 900.00 - per OC-12 Add or Drop /MXJEX/ - 375.00 - per OC-3 Add or Drop /MXJCX/ - 150.00 - per 1000BaseLX Ethernet /MX4LX/ - 500.00

1+1 Protection - per Local Distribution Channel OC-3/OC-3c /P8T/ - 57.00 OC-12/OC-12c /P8T/ - 250.00 OC-48/OC-48c /P8T/ - 1,175.00 OC-192/OC-192c /P8T/ - 5,400.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 50 SECTION 3 - Digital Private Line Services

5. OC-n POINT-TO-POINT SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Nonrecurring Description /Billing Code/ Charge Monthly Price

Optional Features (cont'd)

1+1 Protection with Cable Survivability - per Local Distribution Channel OC-3/OC-3c /P3S/ $500.00 $ 57.00 OC-12/OC-12c /P3S/ 600.00 250.00 OC-48/OC-48c /P3S/ 700.00 1,175.00 OC-192/OC-192c /P3S/ 800.00 5,400.00

1+1 Protection with Route Survivability - per Local Distribution Channel OC-3/OC-3c /P8T/ OC-12/OC-12c /P8T/ Apply P8T above plus OC-48/OC-48c /P8T/ 'Per Quarter Route Mile' OC-192/OC-192c /P8T/ below

- per quarter route mile OC-3 /S2DXY/ 50.00 OC-12 /S2DXS/ 75.00 OC-48 /S2DXX/ 100.00 OC-192 /S2DXY/ 150.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 51 SECTION 3 - Digital Private Line Services

5. OC-n POINT-TO-POINT SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Nonrecurring Monthly Description /Billing Code/ Charge Price

Optional Features (cont'd)

OC-n Point-to-Point Diversity/1/ - per OC-3 circuit /CPAPA/ $ 200.00 - per OC-12 circuit /CPAPB/ 300.00 - per OC-48 circuit /CPAPC/ 700.00 - per OC-192 circuit /CPAPD/ 1,200.00

Point-to-Point Regenerator - per OC-48 regenerator /RGY48/ 5,280.00 - per OC-192 regenerator /RGY92/ 11,000.00

Shared Network Arrangement - Processing Charge, per Service Order /NRBOP/ $30.00

/1/ OC-n Point-to-Point Diversity requires the additional provision of 1+1 Protection with Route Survivability.

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PART 15 - Dedicated Telecommunications Services Original Sheet 52 SECTION 3 - Digital Private Line Services

5. OC-n POINT-TO-POINT SERVICE (cont'd)

F. Prices (cont’d)

2. Payment Plans

• Term Payment Plans OC-n Point-to-Point Service is available under the Term Payment Plan (TPP) whereby customers must select either a 12-, 36- or 60-month period. After the selected Term Payment Plan period is satisfied, the monthly extension price will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A Single Payment Option is available for this service. Refer to Term Payment Plans - Single Payment Option in Part 15, Section 1.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. The termination charge for all TPP terms for OC-n Point-to-Point Service will be calculated as described in Termination Charges in Part 15, Section 1.

For service installed after July 10, 2007, customers will be permitted to move one Local Distribution Channel (LDC) of an OC-n Point-to-Point Service to another location in the same LATA during their TPP term and keep the TPP in force, provided no lapse in service occurs. The customer must have met a 12-month minimum in-service period at the old location and be liable for at least 12 months remaining at the new location. Nonrecurring charges, as appropriate, will apply.

For service installed after July 10, 2007, customers will be permitted to upgrade to a higher- speed service provided by the Company, without incurring Termination Charges, given the following conditions are met:

- an upgrade is considered an increase in speed or capacity when comparing OC-n Point-to- Point Service to the new service. - the customer must issue a disconnect order for the existing OC-n Point-to-Point Service and place a service order for the new, higher-speed service, such that there is no more than 90 days overlap in service. - the same customer locations must be utilized for the new, higher-speed service. - the expiration date for the new, higher-speed service is beyond the end of the original TPP term associated with the existing OC-n Point-to-Point Service. - the existing OC-n Point-to-Point Service must have been in service for a minimum period of 15 months for a 36-month contract or 18 months for a 60-month contract.

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PART 15 - Dedicated Telecommunications Services Original Sheet 53 SECTION 3 - Digital Private Line Services

5. OC-n POINT-TO-POINT SERVICE (cont'd)

F. Prices (cont’d)

4. Credit Allowance

A credit allowance will be given for interruptions in service. Refer to Credit Allowances in Part 15, Section 1.

1+1 Protection with Route Survivability and OC-n Point-to-Point Diversity

Any service interruption will result in a credit equal to one month's bill for the circuit involved. If the interruption occurs on a Local Distribution Channel without this option, normal terms and conditions for Credit Allowances as stated in Part 15, Section 1 will apply.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 54 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE

A. Description

OC-n Dedicated Ring Service provides a customer a dedicated custom network. The network is in a ring architecture, including sub-rings (or ARC sub-rings provisioned on appropriate Next Generation SONET equipment), designed to provide increased reliability and functionality connecting multiple customer-designated locations and specified Company wire centers via self healing network designs. A sub-ring is a lower speed ring made up of two or more sub-ring Nodes operating off of the higher speed main ring. An ARC sub-ring is a lower speed ring made up of one or more sub-ring ARC Nodes operating off of the higher speed main ring.

Dedicated Ring Service will provide 50-millisecond protection switching after fault detection to assure 100 percent availability of the services on the ring. (See Section F, Paragraph 4 following for information regarding credit allowances for service interruptions.)

OC-n Dedicated Ring Service is an alternative to OC-n Point-to-Point Service between multiple customer locations.

Dedicated Ring Configuration

• Nodes

The ring will provide connectivity to multiple customer-designated locations (nodes). However, a ring must have a minimum of two nodes, excluding sub-ring nodes and ARC sub- ring nodes. At least one node must be a Company wire center node. A maximum of 16 nodes including regenerators will be allowed per ring.

The Company reserves the right to determine the order of the nodes on the ring.

When a customer premises node is located in the same building as a wire center node, diversity between the two nodes may not be available.

If a customer co-locates two customer premises nodes of the same speed, on the same dedicated ring, on the same premises, the additional node will be billed as an “additional node”. This option does not provide diversity between these two co-located nodes and the rest of the ring.

The customer will be billed time and material for any additional charges incurred by the Company in locating Company equipment at the customer premises.

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PART 15 - Dedicated Telecommunications Services Original Sheet 55 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Nodes (cont'd)

Direct Drop Node An optional Direct Drop Node (DDN) is available on an OC-12 Dedicated Ring. This node has direct add/drop capability not to exceed 3 DS3s or its equivalent.

The remaining bandwidth of the OC-12 ring continues on through the Node to another drop point on the ring.

Use of the Direct Drop Node allows customers to drop DS1s directly from the Node without the need for the Optical to Electrical DS1 Add/Drop Capability option.

OC-12 nodes and OC-12 DDNs may be used together in making up an OC-12 dedicated ring. A DS1 that enters the ring via a port on a Direct Drop Node must also exit via a port on another Direct Drop Node (DDN on-DDN off). A DS3 that enters the ring via a port on a Direct Drop Node may exit via a port on either a Direct Drop Node or OC-12 node. Direct Drop Node is not available in a two node ring configuration.

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PART 15 - Dedicated Telecommunications Services Original Sheet 57 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont’d)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Nodes (cont'd)

ARC Sub-Ring Node

ARC sub-ring nodes are only available on appropriate Next Generation SONET equipment. An ARC sub-ring node is a lower speed optical extension off a main ring. It connects to one main ring node via the use of OC-N port connections from and to a main ring. The primary use of ARC sub-ring nodes is to add other locations to the ring that will utilize minimal amounts of bandwidth from the main ring. ARC sub-rings are only available off of UPSR main rings. ARC sub-rings are only available where facilities and/or operating conditions permit as determined by the Company.

An optional ARC sub-ring node is available at OC-3 and OC-12 speeds from an OC-48 main ring, and OC-3 speeds from an OC-12 main ring. An ARC sub-ring node may connect to the main ring at any main ring node.

Cascading ARC sub-rings are not permitted off a main ring. Services entering an ARC sub- ring node cannot drop from the directly connecting main ring node (hairpinning).

More than one ARC sub-ring may be added to a main ring. Each ARC sub-ring must be implemented as an OC-M on an OC-N ring with a full complement of STS-1s, STS-3s or STS-12s, depending on the bandwidth of the ARC sub-ring, appearing together at all associated ARC sub-ring nodes on a given ARC sub-ring.

Two OC-N ports apply for each ARC sub-ring connected to the main ring. A node charge applies for each ARC sub-ring location. Mileage charges are applicable when the ARC sub- ring is in a different location than the main ring. An ARC sub-ring which is co-located in the same room with a main ring node at the customer’s premises (for the same dedicated ring) will be billed as an “Additional Node”.

ARC sub-rings do not reduce bandwidth capacity of the main ring. As services are added to the main or ARC sub-ring, only the bandwidth capacity of the service is reduced.

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PART 15 - Dedicated Telecommunications Services Original Sheet 58 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Ports

The ring capacity will be either OC-3, OC-12, OC-48 or OC-192. Lower speed channels are accessible at nodes via port terminations.

Accepted interfaces are as follows:

OC-3 Node OC-12 Node OC-48 Node OC-192 Node

DS1 Ports x (Max. x (Max. 84/OC-3, x (Max. 84/OC-3, x (Max. 84/Node) OC-3c Ports)/1/,/3/ OC-3c Ports)/1/,/3/ 84/OC-3, OC-3c Ports)/1/

DS3 Ports x(Max. x (Max. 12/Node) x (Max. 48/Node) x (Max. 3/Node) 192/Node)

OC-3, OC-3c N/A x (Max. 4/Node) x (Max. 16/Node) 64 Ports/2/

OC-12, OC- N/A N/A x (Max. 4/Node) 16 12c Ports/2/

OC-48, OC- N/A N/A N/A 4 48c Ports/2/

/1/ Optical to Electrical DS1 Add/Drop Capability is needed along with an OC-3 port unless the customer has chosen an OC-12 DDN. When Next Generation (NG) SONET equipment is utilized, Optical to Electrical Add/Drop Capability may be needed when the maximum number of Direct Drop ports are exceeded. /2/ OC-3 and OC-3c ports support both OC-3 and OC-3 bandwidth, OC-12 and OC-12c ports support both OC-12 and OC-12c bandwidths, and OC-48 and OC-48c ports support both OC-48 and OC-48c bandwidths. /3/ The first 84 DS1s can be dropped directly off the shelf. When the customer orders the 85th DS1, a subtended OC-3 shelf is required and the 85th DS1 is dropped from the OC-3 shelf.

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PART 15 - Dedicated Telecommunications Services Original Sheet 59 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Ports (cont'd)

OC-3 Node OC-12 Node OC-48 Node OC-192 Node

100 Mbps (STS-1) Ethernet Ports 3 12 48 192

100 Mbps (STS-3c) Ethernet Ports N/A 4 16 64

1 Gbps (STS-1) Ethernet Ports N/A 12 48 192

1 Gbps (STS-3c) Ethernet Ports N/A 4 16 64

1 Gbps (STS-12c) Ethernet Ports N/A N/A 4 16

1 Gbps (STS-24c) Ethernet Ports N/A N/A 2/1/ 8

/1/ Not available on all Next Generation SONET equipment.

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PART 15 - Dedicated Telecommunications Services Original Sheet 60 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Ports (cont'd)

By using the existing OC-n Point-to-Point Service and cross-connection capability; OC-3 or OC-3c Point-to-Point Service may connect to an OC-3 or OC-3c port of an OC-12, OC-48 or OC-192 ring or OC-12 or OC-12c Point-to-Point Service may connect to an OC-12 or OC-12c port of an OC-48 or OC-192 ring, or OC-48 or OC-48c Point-to-Point Service may connect to an OC-48 or OC-48c port of an OC-192 ring located in a Company wire center. OC-48c bandwidth is only available between two OC-48 or OC-48c ports at different customer premises nodes on the same OC-192 dedicated ring.

As described in OC-n Point-to-Point Service, an OC-3, OC-3c port will permit the connection of STS-1 channels to other STS-1 channels across the OC-12, OC-48 or OC-192 Dedicated Ring Service subject to the overall ring capacity limits described below. Also an STS-1 channel with DS1 payload mapping accessing an OC-12 Dedicated Ring using an OC-3 port may be connected to the Optical to Electrical DS1 Add/Drop Capability for the purpose of connecting up to 28 DS1 ports. An STS-1 channel with DS3 payload mapping accessing the OC-12 or OC-48 Dedicated Ring using an OC-3 port may individually connect to a DS3 port.

DS1 ports, DS3 ports and STS-1 channels within OC-3 ports may not connect to any other ports within the same node. All other port-to-port connections are allowable except for DS3 port to DS1 port connections. If a DS3 to DS1 connection is required, it may be accomplished by the customer's CPE or by utilizing the TransMux capability (OC-3 or OC-12) or current multiplexing environment of DS3 Service and DS1 Service.

EC-1 (Electrical Carrier Level 1) Ports The EC-1 Port (unchannelized) allows for STS-1 electrical connectivity operating at 51.84 Mbps. This port will provide an unchannelized STS-1 interface via the Dedicated Ring Node. EC-1 Ports can be utilized to interconnect SONET network elements using Telcordia- compliant electrical interfaces.

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PART 15 - Dedicated Telecommunications Services Original Sheet 61 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Mileage

Mileage is the total airline distance between the serving wire center of each node involved on the ring. A one mile minimum will be billed between nodes.

A two node ring configuration has a two mile minimum - one mile from the Wire Center Node to the customer premises node, and one mile from the customer premises node to the Wire Center.

In addition, interoffice transport can be connected between wire centers at a lower OC-n speed than the Dedicated Ring, if the transport is between a dedicated ring port and:

• a lower speed Add/Drop Function; • a lower speed Local Distribution Channel; • another lower speed Dedicated Ring Port; • a lower speed Cross-Connect

All of the above terminations must be the same speed as the transport.

• Optical to Electrical Add/Drop Capability

The Optical to Electrical DS1 option allows an electrical DS1 to be derived from an optical OC-12, when more than 84 DS1s are required, or an OC-48 ring by using this capability to add/drop the electrical DS1 from an OC-3.

The Optical to Electrical DS3 option allows an electrical DS3 to be derived from an optical OC-3, OC-12, OC-48 or OC-192 shelf. The manner in which a DS3 is dropped will be designed based on forecast and equipment hierarchy. However, a customer may purchase Central Office Multiplexing. Customers requiring multiplexing at a Customer Premises Node can utilize the TransMux feature (OC-3 or OC-12 only) or must provide CPE to perform this functionality, and it must be compatible with Company equipment.

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PART 15 - Dedicated Telecommunications Services Original Sheet 62 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Dedicated Ring Regenerator

Regenerators provide essential detection and retransmission of SONET Optical 155.52 Mbps, 622.08 Mbps, 2488.32 Mbps and 9953.28 Mbps signals between nodes. Regenerators will only be provided as required by the Company when actual fiber facility distances between customer-designated nodes exceed inter-nodal design limits (typically 20 to 25 miles). Regenerators will be located exclusively in Company wire centers and do not allow ports to access customer service connections.

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PART 15 - Dedicated Telecommunications Services Original Sheet 63 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont’d)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Dedicated Ring Connection Capacity Maximum transport capacity of OC-n Dedicated Ring Service is characterized by the total quantity of individual port-to-port connections allowed between all nodes on the ring.

For OC-3 Dedicated Ring Service, the maximum ring capacity will be equal to one of the following combinations:

DS3 Port to DS3 Port DS1 Port to DS1 Port Connections Connections Three and None Two and Up to 28 One and Up to 56 None and Up to 84

An OC-3 sub-ring (or ARC sub-ring) provided as part of OC-12 or OC-48 Dedicated Ring Service has a maximum capacity equal to one of the above combinations.

For OC-3 Dedicated Ring Service and OC-3 sub-rings (or ARC sub-rings) as part of OC-12 or OC-48 Dedicated Ring Service, individual DS1 port-to-DS1 port and DS3 port-to-DS3 port connections capacities may be incrementally distributed between nodes on the ring in any manner.

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PART 15 - Dedicated Telecommunications Services Original Sheet 64 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont’d)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Dedicated Ring Connection Capacity (cont’d)

For OC-12 Dedicated Ring Service, the maximum ring capacity will be equal to one of the following combinations:

DS3 Port to DS3 Port DS1 Port to DS1 Port Connections Connections Twelve and None Eleven and One group of 28 (28) Ten and Two groups of 28 (56) Nine and Three groups of 28 (84) Eight and Four groups of 28 (112) Seven and Five groups of 28 (140) Six and Six groups of 28 (168) Five and Seven groups of 28 (196) Four and Eight groups of 28 (224) Three and Nine groups of 28 (252) Two and Ten groups of 28 (280) One and Eleven groups of 28 (308) None and Twelve groups of 28 (336)

An OC-12 sub-ring (or ARC sub-ring) provided as part of OC-48 Dedicated Ring Service has a maximum capacity equal to one of the above combinations.

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PART 15 - Dedicated Telecommunications Services Original Sheet 65 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont’d)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Dedicated Ring Connection Capacity (cont’d)

For OC-12 Dedicated Ring Service and OC-12 sub-rings (or ARC sub-rings) as part of OC-48 Dedicated Ring Service, individual DS1 port-to-DS1 port (and DS3 port-to-DS3 port) connection capacities may be incrementally distributed between nodes on the ring in any manner.

For OC-12 Dedicated Ring Service using OC-12 Direct Drop Nodes, the maximum ring capacity will be up to 84 DS1 port-to-port connections, together with up to 9 DS3 port-to-port connections, or equivalent. Individual DS1 port-to-port connections up to a total of 84 may be incrementally distributed between OC-12 Direct Drop Nodes on the ring in any manner.

OC-12 Dedicated Ring Service will also provide capability for node-to-node connection of STS-1 or STS-3C channels using OC-3 or OC-3c ports on the OC-12 ring. Each STS-1 to STS-1 channel connection or STS-1 channel to DS3 port connection requested by the customer will reduce the remaining ring capacity by the equivalent of one DS3 port-to-DS3 port connection or 28 DS1 port-to-DS1 port connections.

Each STS-3C to STS-3C channel connection requested by the customer will reduce the remaining ring capacity by the equivalent of three DS3 port-to-DS3 port connections or 84 DS1 port-to-DS1 port connections.

An OC-3 sub-ring provided as part of an OC-12 Dedicated Ring Service reduces the remaining OC-12 ring capacity by the equivalent of three DS3 port-to-DS3 port connections or 84 DS1 port-to-DS1 port connections.

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PART 15 - Dedicated Telecommunications Services Original Sheet 66 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Dedicated Ring Connection Capacity (cont’d)

For OC-48 Dedicated Ring Service, the maximum ring capacity will be equal to one of the following combinations:

DS3 Port to DS3 Port DS1 Port to DS1 Port Connections Connections Forty-eight and None Forty-seven and One group of 28 (28) Forty-six and Two groups of 28 (56) Forty-five and Three groups of 28 (84) Forty-four and Four groups of 28 (112) Forty-three and Five groups of 28 (140) Forty-two and Six groups of 28 (168) Forty-one and Seven groups of 28 (196) Forty and Eight groups of 28 (224) Thirty-nine and Nine groups of 28 (252) Thirty-eight and Ten groups of 28 (280) Thirty-seven and Eleven groups of 28 (308) Thirty-six and Twelve groups of 28 (336)

Continuing down the scale to: Forty-eight groups None and of 28 (1344)

For OC-48 Dedicated Ring Service, individual DS1 port-to-DS1 port connection capacities may be distributed only in incremental groups of 28 between any two nodes on the ring. Individual DS3 port-to-DS3 port connection capacities may be incrementally distributed between nodes on the ring in any manner.

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PART 15 - Dedicated Telecommunications Services Original Sheet 67 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Dedicated Ring Connection Capacity (cont’d)

OC-48 Dedicated Ring Service will also provide capability for node-to-node connection of STS-1 or STS-3C channels using OC-3, OC-3c, OC-12 or OC-12c ports on the OC-48 ring. Each STS-1 to STS-1 channel connection or STS-1 channel to DS3 port connection requested by the customer will reduce the remaining ring capacity by the equivalent of one DS3 port-to-DS3 port connection or 28 DS1 port-to-DS1 port connections. Each STS-3C to STS-3C channel connection requested by the customer will reduce the remaining ring capacity by the equivalent of three DS3 port-to-DS3 port connections or 84 DS1 port-to-DS1 port connections.

An OC-3 Sub-ring provided as part of OC-48 Dedicated Ring Service reduces the remaining OC-48 ring capacity by the equivalent of three DS3 port-to-DS3 port connections or 84 DS1 port-to-DS1 port connections.

OC-48 Dedicated Ring Service will also provide capability for node-to-node connections of STS-12C channels using OC-12 ports on the OC-48 ring. Each STS-12C to STS-12C channel connection requested by the customer reduces the remaining ring capacity by the equivalent of twelve DS3 port-to-DS3 port connections or 336 DS1-to-DS1 port connections.

An OC-12 Sub-ring provided as part of OC-48 Dedicated Ring Service reduces the remaining OC-48 ring capacity by the equivalent of twelve DS3 port-to-DS3 port connections or 336 DS1 port-to-DS1 port connections.

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PART 15 - Dedicated Telecommunications Services Original Sheet 68 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Dedicated Ring Connection Capacity (cont’d)

For OC-192 Dedicated Ring Service operating with BLSR (Bidirectional Line Switched Ring) protection, the maximum ring capacity directly between adjacent nodes is not to exceed 96 STS-1 circuit equivalents. For OC-192 Dedicated Ring Service operating with UPSR (Unidirectional Path Switched Ring) protection, the maximum ring capacity between all nodes is not to exceed 192 STS-1 circuit equivalents.

OC-192 Dedicated Ring Service will also provide capability for node-to-node connection of STS-1 or STS-3C channels using OC-3, OC-3c, OC-12, OC-12c, OC-48 or OC-48c ports on the OC-192 ring.

OC-192 Dedicated Ring Service will also provide capability for node-to-node connection of STS-12C channels using OC-12, OC-12c, OC-48 or OC-48c ports on the OC-192 ring.

OC-192 Dedicated Ring Service will also provide capability for node-to-node connections of STS-48C channels using OC-48, or OC-48c ports on the OC-192 ring.

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PART 15 - Dedicated Telecommunications Services Original Sheet 69 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

• Unprotected Channel Transport

Unprotected Channel Transport will allow customers to transport traffic over a ring without enabling SONET protection schemes. This is intended for applications in which the customer provides protection for the circuit through means other than those available through SONET. If a fault occurs on the ring along the transport path, the traffic will not be switched to a protection channel. Service will be interrupted on that circuit until the fault is corrected. If a fault occurs in the ring but does not occur along the transport route, service will not be interrupted on that circuit. Without protection, SONET is unable to meet the normal availability so Credit Allowance credits do not apply and credits will not occur upon an outage of an Unprotected Channel Transport. Credits will not be provided for the whole service when the fault on the ring creates the outage. If a riding service extends off the ring, Credit Allowances for that riding service may be applicable per the respective product Guidebook. This capability is limited to customers with OC-n Dedicated Ring service installed after July 2, 2007.

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PART 15 - Dedicated Telecommunications Services Original Sheet 70 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Diagram of OC-3 Dedicated Ring Service

Customer Location #2

D Node

Mileage D to E Mileage C to D Ports Customer Location #3 DS1 DS3 Central Office E C P N DS1 P O DS1 N O O R O D R T D E DS3 ------RATE ELEMENTS ------T S E DS3 S Nodes Ports

Mileage E to F Customer Premises DS3 Ports Mileage B to C Central Offices DS1 Ports

F 6 Mileage Legs between Nodes B

P DS1 P N (example: 5 miles per leg x 6 DS1 N O O O = 30 miles Total Ring) O R R D D T DS3 T E E S S DS3 Central Office A DS1 DS3 Central Office Ports

Mileage F to A Mileage A to B Node

Customer Location #1

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PART 15 - Dedicated Telecommunications Services Original Sheet 71 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Diagram of OC-12 Dedicated Ring Service

Customer Location #2

D Mileage D to E NODE Mileage C to D OC-3 OC-3 Customer Location #3 Central Office DS3 Ports C E O/E

DS1 Add/ OC-3 P N N P OC-3 Ports Drop o O O o r D D r RATE ELEMENTS t E E t s DS3 DS3 s Nodes Ports

Mileage E to F Customer Premises OC-3 Ports Mileage B to C Central Offices DS3 Ports F B DS1 Ports

N P OC-3 O/E OC-3 N O/E DS1 Add/Drop Capability O o Add/ O

D r Drop D 6 Mileage Legs Between Nodes E t E (ex: 7 miles per leg x 6 s DS3 = 42 miles Total Ring) DS1 OC-3 DS3 Central Office OC-3 DS3 PortsCentral Ports Office Ports Mileage F to A Mileage A to B

NODE A

Customer Location #1

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 72 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Diagram of OC-48 Dedicated Ring Service

Customer Location #3

D

Mileage D to E OC-48 Mileage C to D NODE

Central Office Central Office A/D A/D To OC-3 Mux Mux To OC-12 OC-12 A/D C Pt-Pt via Cap Cap Pt-Pt via Port Mux DS3 OC-3 OC-12 Cap Ports OC-48 X-Conn X-Conn OC-48 NODE OC-3 DS3 NODE A/D Ports A/D

Mux Mux OC-3 RATE ELEMENTS OC-12 Cap Cap Ports OC-48 Nodes, A/D Mux Port Capability, OC-12, OC-3 and/or DS3 Ports, O/E DS1 Add/Drop Mileage B to C Mileage E to F Capability, DS1 Ports and Mileage between Nodes. DS3,OC-3 OC-3 Ports Ports B F O/E DS1 A/D DS1 O/E A/D OC-48 Add/ Ports OC-48 Mux Ports Add/ Mux NODE Drop NODE Cap Drop Cap

Customer Location #2 Central Office

A/D A/D

OC-12 Mux Mux DS3

Port Cap Cap Ports Mileage F to A Mileage A to B

OC-48 NODE A

Customer Location #1

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 73 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Diagram of Sub-Ring Nodes, OC-M < OC-N

OC-n

RN RN OC-m

OC-n OC-m OC-n Main Sub-Ring OC-n RN Ring Node OC-m Nodes OC-m Sub-Ring OC-m Node RN RN RN OC-n OC-m

Sub-Ring Nodes, OC-m < OC-n

RN = Ring Node

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 74 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont’d)

A. Description (cont’d)

Dedicated Ring Configuration (cont'd)

• Diagram of ARC Sub-Ring Nodes, OC-m < OC-n

OC-192 1 2 A

Single-node, OC-192 OC-192 Multi-node, Single-Homed ARC Single-Homed ARC Main OC-12 OC-192 OC-12 Ring D Nodes C

4 3 OC-192 B

ARC Sub-Ring Nodes, OC-m < OC-n

OC-192 Dedicated Ring shown as an example

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 75 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

B. Definitions

Dedicated Ring Node A dedicated ring designation of either a customer location or Company wire center that has Add/Drop capabilities.

Dedicated Ring Port A dedicated ring element that denotes the termination or origination of a channelized service between dedicated ring nodes.

Ring Extension A customer premises SONET installation connected to OC-12 Dedicated Ring Service via dedicated ring nodes and ports at two different wire center locations, one of which must be the serving wire center of the extended location. This applies only when the 1+1 Protection with Central Office Survivability optional feature is offered with OC-3 Service or OC-12 Service local distribution channels.

SONET (Synchronous Optical Network) SONET is a set of international standards for fiber optic based transmission systems. SONET defines standard optical carrier transmission rates and utilizes a modular multiplexing approach based on the application of Synchronous Transport Signals (STS).

Re-Map Service Re-Map Service is provided in conjunction with an OC-n Dedicated Ring Service and allows for a pre-defined set of services to be re-routed by the Company from one customer premises node to another customer premises node (defined as a “Re-Map node”) in the event of a customer premises disaster. Re-Map Service will be tested at initial installation and once each year thereafter. Additional testing can be requested and will be charged on a per test basis. Activation upon customer request in the event of an emergency will be charged on a per-occurrence basis.

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PART 15 - Dedicated Telecommunications Services Original Sheet 77 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

C. Terms and Conditions

The following terms and conditions apply to OC-n Dedicated Ring Service:

1. Dedicated ring service is provided at the option of the Company where appropriate SONET facilities are available. If appropriate facilities are not available, Special Construction charges may apply.

2. Dedicated ring service has a minimum service period of 36 months.

3. The customer will be billed time and material for any additional charges incurred by the Company in locating Company equipment at the customer premises for Dedicated Ring Node installations.

4. When a customer orders a Re-Map node, a minimum number of Re-Map ports must be equipped:

OC-3 28 DS1 Re-Map ports, or 1 DS3 or EC-1 Re-Map port

OC-12 28 DS1 Re-Map ports, or 3 DS3 or EC-1 Re-Map ports, or 1 OC-3 or OC-3c Re- Map port

OC-48 28 DS1 Re-Map ports, or 3 DS3 or EC-1 Re-Map ports, or 1 OC-3 or OC-3c Re- Map port, or 1 OC-12 or OC-12c Re-Map port

OC-192 28 DS1 Re-Map ports, or 3 DS3 or EC-1 Re-Map ports, or 1 OC-3 or OC-3c Re- Map port, or 1 OC-12 or OC-12c Re-Map port, or 4 OC-48 or OC-48c Re-Map ports

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PART 15 - Dedicated Telecommunications Services Original Sheet 78 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

C. Terms and Conditions (cont’d)

5. Re-Map node ports must be ordered in incremental blocks as described below:

Port Type OC-3 OC-12 OC-48 DS1 DS3 OC-3c OC-12c OC-48c

OC-3 Ring 28, 56 or 84 1, 2 N/A N/A N/A (multiples or 3 of 28)

OC-12 Ring 28, 56 or 84 3, 6, 9 or 1, 2, 3 or 4 N/A N/A (multiples 12 of 28)

OC-48 Ring 28, 56 or 84 3, 6, 9 … 1, 2, 3 … or 1, 2, 3 or 4 N/A (multiples or 48 16 of 28)

OC-192 Ring 28, 56 or 84 3, 6, 9 … 1, 2, 3 … or 1, 2, 3 … or 1, 2, 3 or 4 (multiples or 192 64 16 of 28)/1/

6. An OC-48 or OC-192 ring utilizing Re-Map requires an OC-12, OC-3, EC-1 or DS3 Re-Map port. DS1 Re-Map Add/Drop Capability is needed if DS1 drops are required at the Re-Map node. (An OC-3 or OC-3c Re-Map port and DS1 Re-Map O/E Add/Drop Capability supports up to 84 DS1s).

7. When provisioning a Re-Map node, either 28 DS1 Re-Map ports or 1 DS3 or EC-1 Re-Map port will be the minimum required.

8. The emergency Re-Map activation configuration will be maintained for up to 30 days. After 30 days, if the customer wishes to continue the use of the remapped configuration, the emergency activation NRC will be applied once for each 30 day additional period.

/1/ DS1 Ports will be provided via a subtended OC-3 or OC-12 shelf.

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PART 15 - Dedicated Telecommunications Services Original Sheet 79 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

C. Terms and Conditions (cont’d)

9. Once the customer notifies the Company that they are ready to receive signals at the re-map node site the Company will re-map up to 50 circuits within the initial 4 hours and 20 circuits every hour thereafter. The Emergency Activation Nonrecurring Charge will not be applied if the first 50 circuits are not remapped within 4 hours due to a Company caused delay.

10. Re-Map testing or activation for OC-3 or OC-12 DDN service requires a minimum of one DS1 (VT1.5), or 1 DS3 (STS-1) between one customer premises node and the Re-Map node.

11. Re-Map testing or activation for OC-12, OC-48 or OC-192 service requires a minimum incremental group of from 1 to 28 DS1s or one DS3 or EC-1 (equals one STS-1) between one customer premises node and the Re-Map node. In addition, Re-Map capability on an OC-192 Dedicated Ring is limited to those rings utilizing UPSR (Unidirectional Path Switched Ring) protection.

12. Effective June 13, 2003, new orders for OC-n Dedicated Ring Service with the EoS enhancement will be served by different equipment than the equipment used for customers who placed OC-n Dedicated Ring Service orders that were completed prior to June 13, 2003. Customers subscribing to OC-n Dedicated Ring Service prior to June 13, 2003 requesting a change to the new equipment will incur early termination charges for their existing OC-n Dedicated Ring Service. Disconnect of the existing OC-n Dedicated Ring Service and placement of an order for new OC-n Dedicated Ring Service with the EoS enhancement is required. The monthly rates for the new service(s) shall be those rates in effect at the time the new service(s) is installed.

13. EoS interfaces have distance limitations from the Company Serving Wire Center to the customer's demarcation point. These limitations will be discussed with the customer during the planning process, and the Company and the customer will determine the appropriate EoS interface for the customer's OC-n Dedicated Ring Service.

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PART 15 - Dedicated Telecommunications Services Original Sheet 80 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

C. Terms and Conditions (cont’d)

14. EoS requires that customers utilize certain settings for their Customer Provided Equipment (CPE). The Company will work cooperatively with the customer to make sure that the customer utilizes the correct settings. In some cases, the customer may be required to make modifications (including upgrades) to their CPE, which will be entirely at the customer’s expense. Failure to use these settings will result in service problems possibly leading to outages for which the customer will not hold the Company liable. EoS throughputs may vary depending on the type of equipment used to provide the service. Certain protocols may not be available.

15. Flex Ring (multiple rings) is available only with Next Generation SONET equipment. Effective March 6, 2006, new orders for OC-n Dedicated Ring Service with the Flex Ring feature will be served by different equipment than the equipment used for customers who placed OC-n Dedicated Ring Service orders that were completed prior to March 6, 2006. Customers subscribing to OC-n Dedicated Ring Service prior to March 6, 2006 requesting a change to the new equipment will be allowed when the customer orders a new ring with a TPP and revenue of equal to or greater than the existing ring. Disconnect of the existing OC-n Dedicated Ring Service and placement of an order for new OC-n Dedicated Ring Service with the Flex Ring feature is required. The monthly rates for the new service(s) shall be those rates in effect at the time the new service(s) is installed.

16. Only one Flex Ring customer may reside on a Dedicated Ring Node in the Central Office or Customer Premise. Although the equipment can support multiple Dedicated Rings, all rings must be owned by the same customer. Multiple Dedicated Ring customers can not share a single piece of Network Terminating Equipment. Where possible, the Company will provision a second ring (on the same shelf) with the same line rate to provide the customer with additional bandwidth. This will provide the customer with an aggregate bandwidth of 24 STS-1s (2 OC-12s) and 96 STS-1s (2 OC-48s) without purchasing an additional shelf. Capability of the second ring and limitations on the available direct drop ports off the second ring will be similar to the first ring and subject to the availability of card slots on the shelf.

17. ARC sub-rings can be provisioned in two basic configurations: - single-node, single-homed ARC - multi-node, single-homed ARC

18. Circuit traffic can be added/dropped from an ARC sub-ring node to another ARC sub-ring node within the same ARC (known as intra-ARC) or between ARCs (known as inter-ARC). Intra- ARC circuits can only be provisioned as unprotected, due to technical limitations. Circuit traffic can also originate on an ARC sub-ring node and route across and drop from a main ring node, but only when UPSR protection schemes are used.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 81 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

D. Features

1. Standard Features

Shared Network Arrangement A Shared Network Arrangement is available with OC-n Dedicated Ring Service. Refer to Shared Network Arrangement in Part 15, Section 1.

Expanded Interconnection Provides for the connection of customer-provided dedicated ring channels to specified Company provided Dedicated Communications Services.

Transmux Provides for the ability to multiplex from a VT-mapped DS-1 to a DS-3 within an OC-3, OC-12 or OC-48 Dedicated Ring Service and also on a single card. DS-1s mapped to VT1.5s are aggregated across the SONET network and terminated into a single DS-3 card at a central location. The hand-off will be a channelized DS-3.

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PART 15 - Dedicated Telecommunications Services Original Sheet 83 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices

1. Service Elements

Nonrecurring Description /Billing Code/ Charge

Administrative Charge - per order $ 50.00 • OC-3 Dedicated Ring /ORCMX/ 50.00 • OC-12 Dedicated Ring /ORCMX/ 50.00 • OC-48 Dedicated Ring /ORCMX/ • OC-192 Dedicated Ring /ORCMX/ 50.00

Design and Central Office Connection Charge - per circuit/1/ 600.00 • OC-3 Dedicated Ring /NRBCL/ • OC-12 Dedicated Ring /NRBCL/ 600.00 • OC-48 Dedicated Ring /NRBCL/ 600.00 • OC-192 Dedicated Ring /NRBCL/ 2,250.00

/1/ Per circuit is applied once per the total original ring design.

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PART 15 - Dedicated Telecommunications Services Original Sheet 84 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Nonrecurring Description /Billing Code/ Charge

Re-Map Service Initial service script establishment/test charge Per OC-3 Ring /NRMR1/ $2,000.00 Per OC-12 Ring /NRMR1/ 3,500.00 Per OC-12 DDN Ring /NRMR2/ 2,000.00 Per OC-48 Ring /NRMR1/ 4,500.00 Per OC-192 Ring /NRMR1/ 5,500.00 Subsequent script activity charge Per OC-3 Ring /NRMR3/ 1,200.00 Per OC-12 Ring /NRMR3/ 2,100.00 Per OC-12 DDN Ring /NRMR4/ 1,200.00 Per OC-48 Ring /NRMR3/ 2,700.00 Per OC-192 Ring /NRMR3/ 3,200.00 Scheduled test charge Per OC-3 Ring /NRMR5/ 1,600.00 Per OC-12 Ring /NRMR5/ 2,800.00 Per OC-12 DDN Ring /NRMR6/ 1,600.00 Per OC-48 Ring /NRMR5/ 3,600.00 Per OC-192 Ring /NRMR5/ 4,200.00 Emergency Re-map activation (per request) Per OC-3 Ring /NRMR7/ 1,800.00 Per OC-12 Ring /NRMR7/ 3,150.00 Per OC-12 DDN Ring /NRMR8/ 1,800.00 Per OC-48 Ring /NRMR7/ 4,050.00 Per OC-192 Ring /NRMR7/ 5,000.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 85 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

Node - per node type:

OC-3 Customer Premises First /FP5CX/ $1,770.00 $1,415.00 Additional /FP5CA/ 1,000.00 800.00 Central Office /FC5CX/ 1,000.00 800.00

OC-3 Customer Premises First Re-Map /RN8CX/ 1,770.00 1,415.00 Additional Re-Map /RN8CA/ 1,000.00 800.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 86 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

Node (cont'd)

OC-12 Customer Premises First /FP5DX/ $3,850.00 $3,080.00 Additional /FP5DA/ 2,620.00 2,095.00 Central Office /FC5DX/ 2,620.00 2,095.00

Direct Drop Customer Premises First /L8NDX/ 3,750.00 2,980.00 Additional /L8NDA/ 2,520.00 1,995.00 Central Office /L9NDX/ 2,520.00 1,995.00

OC-12 Customer Premises First Re-Map /RN8DX/ 3,850.00 3,080.00 Additional Re-Map /RN8DA/ 2,620.00 2,095.00

Direct Drop Customer Premises First Re-Map /RN8DX/ 3,750.00 2,980.00 Additional Re-Map /RL8DA/ 2,520.00 1,995.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 87 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

Node (cont'd)

OC-48 Customer Premises First /FP5EX/ $5,890.00 $4,715.00 Additional /FP5EA/ 5,240.00 4,190.00 Central Office /FC5EX/ 5,240.00 4,190.00

OC-48 Customer Premises First Re-Map /RN8EX/ $5,890.00 $4,715.00 Additional Re-Map /RN8EA/ 5,240.00 4,190.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 88 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

Node (cont'd) OC-192 Customer Premises First /GP5AX/ $22,000.00 $17,650.00 Additional /GP5AA/ 19,650.00 15,700.00 Central Office /GC5AX/ 19,650.00 15,700.00

OC-192 Customer Premises First Re-Map /RNFAX/ 22,000.00 17,650.00 Additional Re-Map /RNFAA/ 19,650.00 15,700.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 89 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

Node (cont'd)

Nonrecurring Charges for subsequent installation - per node Customer Premises /NRBS7/ $400.00 Central Office /NRBSV/ 325.00

Nonrecurring Charges for subsequent installation - per node Customer Premises - Re-Map /NRBS7/ 400.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 90 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment

Term Payment Plans Monthly Description /Billing Code/ 36 Months 60 Months Extension

Node (cont'd) - per node:

Flex Ring

OC-12 Customer Premises Node /GP5FX/ $2,200.00 $1,800.00 $2,900.00 Central Office Node /GC5FX/ 1,850.00 1,500.00 2,200.00

OC-48 Customer Premises Node /GP5GX/ 3,900.00 3,000.00 4,500.00 Central Office Node /GC5GX/ 3,500.00 2,800.00 4,100.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 91 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring Monthly Description /Billing Code/ Charge 36 Months 60 Months Extension

Transmux/1/ - per DS-3 port /S4NGX/ $550.00 $450.00 $675.00

Nonrecurring Charges for subsequent installation - per DS-3 port /NRBSX/ $385.00

/1/ Available only with OC-3, OC-12 or OC-48 Dedicated Ring Service.

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PART 15 - Dedicated Telecommunications Services Original Sheet 92 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

OC-48 Add/Drop Capability/1/ - per arrangement (per node) (not to exceed 12 DS3s or equivalent) /MPEFX/ $1,170.00 $965.00

Re-Map per arrangement (not to exceed 12 DS3s or equivalent) /M8RFX/ 1,170.00 965.00

Nonrecurring Charges for subsequent installation - per arrangement /NRBS8/ $490.00

/1/ When Next Generation (NG) SONET equipment is utilized, the Add/Drop Capability Charge may be applied when the maximum number of Direct Drop ports are exceeded.

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PART 15 - Dedicated Telecommunications Services Original Sheet 93 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

OC-192 Add/Drop Capability /1//2/ - per node /MXRGX/ $5,000.00 $4,000.00

/1/ The OC-192 Add/Drop Capability Charge is applied to all nodes, excluding regenerators. /2/ When Next Generation (NG) SONET equipment is utilized, the Add/Drop Capability Charge may be applied when the maximum number of Direct Drop ports are exceeded.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 94 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

Ports - per node:

DS1 at OC-3 node /SPRAX/ $ 50.00 $ 45.00 DS3 at OC-3 node /SPRBX/ 120.00 110.00 DS3 at OC-12 (DDN) /SPRMX/ 120.00 110.00 DS3 at OC-12 node /SPRCX/ 120.00 110.00 EC-1 at OC-3 node /S9NSX/ 150.00 135.00 EC-1 at OC-12 node /S9NUX/ 120.00 110.00 EC-1 at OC-48 node /S9NVX/ 120.00 110.00 EC-1 at OC-192 node /S9TZX/ 120.00 110.00 OC-3,OC-3c at OC-12 node /SPREX/ 120.00 110.00 DS1 at OC-12 (DNN)/1/ /SPRNX/ 50.00 45.00 DS1 at OC-12 node/1/ /SPRGX/ 50.00 45.00 OC-12,OC-12c at OC-48 node /SPRHX/ 375.00 360.00 OC-3,OC-3c at OC-48 node /SPRJX/ 150.00 135.00 DS3 at OC-48 node /SPRKX/ 120.00 110.00 DS1 at OC-48 node/1/ /SPRLX/ 50.00 45.00 OC-48,OC-48c at OC-192 node /S9NJX/ 950.00 900.00 OC-12,OC-12c at OC-192 node /S9NGX/ 375.00 360.00 OC-3,OC-3c at OC-192 node /S9NEX/ 150.00 135.00 DS3 at OC-192 node /S9QGX/ 120.00 110.00 DS1 at OC-192 node /S9QWX/ 50.00 45.00

/1/ Optical to Electrical DS1 Add/Drop Capability is needed along with an OC-3 port unless the customer has chosen an OC-12 DDN. When Next Generation (NG) SONET equipment is utilized, Optical to Electrical Add/Drop Capability may be needed when the maximum number of Direct Drop ports are exceeded.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 95 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

Nonrecurring Charges for subsequent installation - per port

OC-48,OC-48c /NRBN9/ $500.00 OC-12,OC-12c /NRBSZ/ 400.00 OC-3,OC-3c /NRBSW/ 400.00 DS3 /NRBSX/ 385.00 EC-1 /1CREC/ 110.00 DS1 /NRBSY/ 350.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 96 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Monthly Description /Billing Code/ 36 Months 60 Months Extension

EoS Ports - per node:

100 Mbps Ethernet (STS-1)at OC-3 node /S9TAX/ $145.00 $130.00 $ 225.00 100 Mbps Ethernet (STS-1)at OC-12 node /S9TBX/ 145.00 130.00 225.00 100 Mbps Ethernet (STS-3c)at OC-12 node /S9TCX/ 180.00 160.00 280.00 1 Gbps Ethernet (STS-1) at OC-12 node /S9TDX/ 250.00 200.00 350.00 1 Gbps Ethernet (STS-3c) at OC-12 node /S9TEX/ 250.00 200.00 350.00 100 Mbps Ethernet (STS-1)at OC-48 node /S9TGX/ 145.00 130.00 225.00 100 Mbps Ethernet (STS-3c)at OC-48 node /S9THX/ 180.00 160.00 280.00 1 Gbps Ethernet (STS-1) at OC-48 node /S9TJX/ 250.00 200.00 350.00 1 Gbps Ethernet (STS-3c) at OC-48 node /S9TKX/ 250.00 200.00 350.00 1 Gbps Ethernet (STS-12c) at OC-48 node /S9TLX/ 600.00 500.00 875.00 1 Gbps Ethernet (STS-24) at OC-48 node /S9TMX/ 900.00 850.00 1,500.00 100 Mbps Ethernet (STS-1)at OC-192 node /S9TNX/ 145.00 130.00 225.00 100 Mbps Ethernet (STS-3c)at OC-192 node/S9TOX/ 180.00 160.00 280.00 1 Gbps Ethernet (STS-1) at OC-192 node /S9TPX/ 250.00 200.00 350.00 1 Gbps Ethernet (STS-3c) at OC-192 node /S9TQX/ 250.00 200.00 350.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 97 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Monthly Description /Billing Code/ 36 Months 60 Months Extension

EoS Ports - per node: (cont'd)

1 Gbps Ethernet (STS-12c) at OC-192 node /S9TRX/ $600.00 $500.00 $ 875.00 1 Gbps Ethernet (STS-24c) at OC-192 node /S9TSX/ 900.00 850.00 1,500.00

Nonrecurring Charge

Nonrecurring Charges for subsequent installation, per port type 100 Mbps Ethernet /NRBY4/ $385.00 1 Gbps Ethernet /NRBY5/ 425.00

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6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

Mileage - per mile between nodes by ring type • OC-3 /IL5XX/ $ 260.00 $ 220.00 • OC-12 /IL5XX/ 260.00 220.00 • OC-48 /IL5XX/ 260.00 220.00 • OC-192 /IL5XX/ 260.00 220.00 Optical to Electrical Add/Drop Capability - per OC-3 to DS1 add/drop /MXJDX/ 875.00 700.00 - per arrangement /1/ (per OC-192 node) /2/ /MXJGX/ 2,500.00 2,000.00 Re-Map - per OC-3 to DS1 add/drop /M8RDX/ 875.00 700.00

Nonrecurring Charges for subsequent installation - per OC-3 to DS1 add/drop capability /NRBS6/ $490.00

/1/ When electrical DS3 or EC-1 drops are required, the OC-192 Optical to Electrical Add/Drop Capability Charge is applied in addition to the OC-192 Add/Drop Capability Charge preceding. When Next Generation (NG) SONET equipment is utilized, the Optical to Electrical Add/Drop Capability Charge may be needed only when the maximum number of Direct Drop ports are exceeded. /2/ Not to exceed any configurable combination of ports beyond 192 STS-1 equivalents.

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PART 15 - Dedicated Telecommunications Services Original Sheet 101 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans 36 60 Description /Billing Code/ Months Months

Re-Map Capability per DS1 Re-Map Block (consists of 28 DS1 ports) at OC-3 Ring /P8RAX/ $1,400.00 $1,260.00 OC-12 Ring /P8RGX/ 1,400.00 1,260.00 OC-12 DDN Ring /P8RNX/ 1,400.00 1,260.00 OC-48 Ring /P8RLX/ 1,400.00 1,260.00 per DS3 Re-Map Port at OC-3 Ring /P8RBX/ 120.00 110.00 OC-12 Ring /P8RBX/ 120.00 110.00 OC-12 DDN Ring /P8RMX/ 120.00 110.00 OC-48 Ring /P8RMX/ 120.00 110.00 per EC-1 Re-Map Port at OC-3 Ring /S9N6X/ 120.00 110.00 OC-12 Ring /S9N8X/ 120.00 110.00 OC-48 Ring /S9N9X/ 120.00 110.00 per DS3 Re-Map Block (consists of 3 DS3 ports) at OC-12 Ring /P8RCX/ 360.00 330.00 OC-48 Ring /P8RKX/ 360.00 330.00 per DS3 TransMux Re-Map Port at OC-3 Ring /RN7TX/ 550.00 450.00 OC-12 Ring /RN7TX/ 550.00 450.00 OC-48 Ring /RN7TX/ 550.00 450.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 102 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 36 60 Description /Billing Code/ Charge Months Months

Re-Map Capability - per OC-3 Re-Map Port at OC-12 Ring /P8REX/ $ 150.00 $ 135.00 OC-48 Ring /P8RJX/ 150.00 135.00 OC-192 Ring /RN72X/ 150.00 135.00 - per OC-12 Re-Map Port at OC-48 Ring /P8RHX/ 375.00 360.00 OC-192 Ring /RN73X/ 375.00 360.00 - per OC-48 Re-Map Port at OC-192 Ring /RN74X/ 825.00 700.00

- per EC-1 Re-Map Port

Nonrecurring Charges for subsequent installation of EC-1 Re- Map Port /1CREC/ $110.00

Dedicated Ring Regenerator each (as required)

• OC-3 /RGY/ 1,000.00 800.00 • OC-12 /RGY/ 2,620.00 2,095.00 • OC-48 /RGY/ 3,275.00 2,620.00 • OC-192 /RGY/ 9,250.00 7,400.00

Nonrecurring Charges for subsequent installation of Regenerator - each (as required) /NRBS5/ 270.00

Shared Network Arrangement - processing charge, per service order /NRBOP/ 30.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 103 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont’d)

2. Payment Plans

• Term Payment Plans OC-n Dedicated Ring Service is only available under the Term Payment Plan (TPP) whereby customers must select either a 36-month or 60-month period. If a node is added after the initial installation of the dedicated ring, the new node will carry the same TPP rate as the initial ring and be co-terminus with that TPP. However, if a node is added during the last 12 months or less of a TPP, the customer will be billed the initial TPP ring rate for a minimum period of 12 months. After the selected Term Payment Plan period is satisfied, the prevailing prices of the current plan will continue until the customer cancels or renews the service. Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A Single Payment Option is available for this service. Refer to Term Payment Plans - Single Payment Option in Part 15, Section 1.

3. Termination Charges

Termination Charges will apply to service termination prior to the contracted period. The termination charge for all TPP terms for OC-n Dedicated Ring Service will be calculated as described in Term Payments Plans – Termination Charges in Part 15, Section 1.

Logical changes in the ring (change in mapping content) are not considered to be a dedicated ring termination.

For service installed after July 10, 2007, customers will be permitted to upgrade to a higher- speed Ring-based service provided by the Company, without incurring Termination Charges, given the following conditions are met:

• an upgrade is considered an increase in speed or capacity when comparing OC-n Dedicated Ring Service to the new service. • the customer must issue a disconnect order for the existing OC-n Dedicated Ring Service and place a service order for the new, higher-speed service, such that there is no more than 90 days overlap in service. • the same customer locations must be utilized for the new, higher-speed service. • the expiration date for the new, higher-speed service is beyond the end of the original TPP term associated with the existing OC-n Dedicated Ring Service. • the existing OC-n Dedicated Ring Service must have been in service for a minimum period of 15 months for a 36-month contract or 18 months for a 60-month contract.

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PART 15 - Dedicated Telecommunications Services Original Sheet 104 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont’d)

3. Termination Charges (cont’d)

For customers upgrading from a lower speed OC-n Dedicated Ring Service to a higher speed OC-n Dedicated Ring Service, such an upgrade will be permitted without incurring Termination Liability charges, providing the following criteria are met:

• The customer subscribes to a Term Pricing Plan period that is equal to, or greater than 36 months; • The expiration date for the new Term Pricing Plan period is beyond the end of the original Term Pricing Plan period; • No lapse in service occurs; • Nonrecurring Charges will apply, when applicable; • The monthly rates for the new service(s) will be those rates in effect at the time the new service(s) is(are) installed; • The new service is provided between the same customer locations and with the same customer of record as the disconnected service; • The original location of all nodes must be included in the new service; • The billed monthly recurring revenue for each month of the first eighteen months of the new service is equal to or greater than the billed monthly recurring revenue for the last month of the services being converted; • The customer agrees not to convert the new service Term Pricing Plan to a pricing plan with a lower rate for the period of eighteen months after the conversion; and • Spare facilities and equipment must be available or a nonrecurring up-front payment, which is a Special Construction Charge, may apply.

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PART 15 - Dedicated Telecommunications Services Original Sheet 105 SECTION 3 - Digital Private Line Services

6. OC-n DEDICATED RING SERVICE (cont'd)

F. Prices (cont'd)

3. Termination Charges (cont'd)

Customers will be permitted to move one end of an OC-n Dedicated Ring Service to another location, without incurring Termination Charges, given the following conditions are met:

- The customer must issue a disconnect order for the existing location and place a new service order for OC-n Dedicated Ring Service at the new location. Termination Charges for the existing location will be waived. Standard nonrecurring charges to install OC-n Dedicated Ring Service as a new circuit will apply.

- In addition to standard nonrecurring charges, additional charges for moving one end of the OC-n Dedicated Ring Service will be calculated on a time and material charge basis.

- Negotiated down time will apply, as the new circuit will need to be designed and installed.

- The term of the new contract must be equal to or greater than the remaining time left on the existing OC-n Dedicated Ring contract.

- The existing OC-n Dedicated Ring Service must have been in service for a minimum period of 12 months.

Moves are contingent on availability of fiber from premise to premise. Other Special Construction charges, as necessary, may apply.

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PART 15 - Dedicated Telecommunications Services Original Sheet 107 SECTION 3 - Digital Private Line Services

7. PROTECTPATH® SERVICE

A. Description

ProtectPath® Service utilizes the SONET overlay network (shared ring) to provision DS1 (ProtectPath® 1.5) and/or DS3 (non-channelized) (ProtectPath® 45) service.

ProtectPath® Service provides superior network reliability because it utilizes a self healing SONET ring architecture to deliver the customer’s DS1 Service or DS3 Service.

All DS1 Service and DS3 Service rates and charges apply in addition to the appropriate ProtectPath® Service charges.

The National Exchange Carrier Association (NECA) Tariff F.C.C. No. 4 lists the Company wire center locations from which ProtectPath® Service is available.

B. Definitions

B8ZS An arrangement which allows a customer to transport 1.536 Mbps of information on DS1 Service with no constraint on the quantity or sequence of one and zero bits.

Extended Superframe (ESF) Format A signaling framing format for DS1 services consisting of frames with 192 information digit time slots preceded by a one digit time slot containing a Frame (F) bit. The ESF framing format consists of 24 consecutive frames as above in a structure where the F bits are divided into three groups used for framing, monitoring and datalink functions according to detailed specifications contained in industry standard ANSI T1.403-1995.

Superframe (SF or D4) Format A signal framing format for DS1 services consisting of frames with 192 information digit time slots preceded by a one digit time slot containing a Frame (F) bit. The SF or D4 framing format consists of twelve consecutive frames as above in a structure where the F bits are used for framing only and are divided into two groups used for terminal framing and signaling framing functions according to detailed specifications contained in industry standard ANSI T1.403-1995.

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7. PROTECTPATH® SERVICE (cont’d)

C. Terms and Conditions

In addition to regulations set forth elsewhere in this Guidebook, the following regulations apply to ProtectPath® Service:

1. The minimum service period for ProtectPath® Service is 36 months.

2. ProtectPath® Service is only available when both ends of the service are located on the SONET overlay network. However, both ends cannot terminate at the same SONET node location.

3. At least one end of ProtectPath® Service must terminate at a customer premises.

4. Channelized DS1 service is allowed, however the channelization must occur outside of the SONET overlay network.

5. Existing customers may convert to ProtectPath® Service, paying only the ProtectPath® service charge, as long as the speed ordered is greater than or equal to their existing service and the ProtectPath® contract length is either greater than or equal to their existing contract length. If the time remaining on the existing customer’s TPP is less than 36 months, see Part 15, Section 1, Term Payment Plans.

D. Features

B8ZS Is available as a non-chargeable, customer specified option.

Extended Super Frame Is available as a non-chargeable, customer specified option.

Super Frame Is available as a non-chargeable, customer specified option.

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7. PROTECTPATH® SERVICE (cont’d)

E. Technical References

Technical specifications for ProtectPath® Service are found in:

Subject Technical Reference

Ameritech Digital Service Transmission Parameters AM TR-TMO-000101

Ameritech Services Network Channel and Network Channel AM TR-TMO-000080 Interface Codes

High Capacity Digital Service (1.544 Mbps) Interface Generic GR-54-CORE (Telcordia) Requirements for End Users

High Capacity Digital Special Access Service Transmission GR-342-CORE (Telcordia) Parameter Limits and Interface Specifications

Network Rolls and Responsibilities for ProtectPath SONET AM-002-531-007 Services

The Technical Reference can be obtained from:

APEX Support Team (734) 523-7348

The Telcordia Technologies (formerly known as Bellcore) Publication(s) can be obtained from:

Telcordia Technologies, Inc. 8 Corporate Place, PYA 3A-184 Piscataway, New Jersey 08854-4156

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PART 15 - Dedicated Telecommunications Services Original Sheet 110 SECTION 3 - Digital Private Line Services

7. PROTECTPATH® SERVICE (cont’d)

F. Prices

1. Service Elements

Nonrecurring Description /Billing Code/ Charge

Administrative Charge - per service order, see: DS1 Service /NRBA+/ /1/ DS3 Service /NRBA+/ /2/

Design and Central Office Connection Charge - per circuit, see: DS1 Service /NRBD+/ /1/

Customer Connection Charge - per termination, see: DS1 Service /NRBB+/ /1/

ProtectPath® 1.5 Service Charge - per arrangement /NR9DV/ $200.00

ProtectPath® 45 Service Charge - per arrangement /NR9DW/ 200.00

/1/ DS1 Service as specified earlier in this Section apply. /2/ DS3 Service as specified earlier in this Section apply.

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PART 15 - Dedicated Telecommunications Services Original Sheet 111 SECTION 3 - Digital Private Line Services

7. PROTECTPATH® SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans 12 36 60 Monthly Description /Billing Code/ Months Months Months Extension

ProtectPath® 1.5 Service:

Local Distribution Channel - per point of termination /TZ4X+/ - /2/ /2/ /1/

Channel Mileage Termination - per point of termination /CZ4X+/ - /2/ /2/ /1/

Channel Mileage - per mile /1YZX+/ - /2/ /2/ /1/

/1/ Applicable only after completion of a Term Payment Plan, DS1 Service as specified earlier in this Section apply. /2/ DS1 Service as specified earlier in this Section apply.

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PART 15 - Dedicated Telecommunications Services Original Sheet 112 SECTION 3 - Digital Private Line Services

7. PROTECTPATH® SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans 12 36 60 Monthly Description /Billing Code/ Months Months Months Extension

ProtectPath® 45 Service:

Local Distribution Channel - per point of termination Electrical Interface - per service package /TZUP+/ - /1/ /1/ /2/

Channel Mileage Termination - per point of termination /CZ4X+/ - /1/ /1/ /2/

Channel Mileage - per mile /1YZX+/ - /1/ /1/ /2/

/1/ DS3 Service as specified earlier in this Section apply. /2/ Applicable only after completion of a Term Payment Plan, DS3 Service as specified earlier in this Section apply.

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PART 15 - Dedicated Telecommunications Services Original Sheet 113 SECTION 3 - Digital Private Line Services

7. PROTECTPATH® SERVICE (cont’d)

F. Prices (cont'd)

2. Payment Plans

• Term Payment Plans ProtectPath® Service is only available under the Term Payment Plan (TPP) whereby customers must select either a 36 or 60 month period. After the selected Term Payment Plan period is satisfied, the monthly price for DS1 service or the monthly extension price for DS3 service will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A single payment option is available for this service. Refer to Term Payment Plans - Single Payment Option in Part 15, Section 1.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. The termination charge for all TPP terms for ProtectPath® Service will be calculated as described in Term Payment Plans - Termination Charges in Part 15, Section 1.

4. Credit Allowance

A credit allowance will be given for failure to meet the installation interval service date or for interruption of service. Refer to Credit Allowances in Part 15, Section 1 for calculating credit allowances.

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PART 15 - Dedicated Telecommunications Services Original Sheet 114 SECTION 3 - Digital Private Line Services

8. CENTRAL OFFICE MULTIPLEXING AND CROSS CONNECT SERVICES

A. Description

Central Office Multiplexing is a wire center based optional service that either derives multiple transmission paths from a single transmission source or combines multiple transmission sources into a single transmission path. Central Office Multiplexing may be available in the following configurations:

• DS3/DS1 is a serving arrangement that either converts an electrical DS3 channel to twenty- eight DS1 channels or converts twenty-eight DS1 channels to an electrical DS3 channel. Timing for the DS1 channels utilizes digital time division multiplexing.

• DS1/(Analog, Base Rate Service or 128, 256, 384 Service) is a serving arrangement that either converts a DS1 into twenty-four channels for use with Analog, Base Rate Service or 128, 256, 384 Service or converts twenty-four Analog, Base Rate Service or 128, 256, 384 Service channels into a DS1 channel.

Cross Connect is a wire center based optional service that cross-connects an OC-3 or OC-12 Service to another service of the same speed or to an add/drop function of the same speed at a wire center for the same or different customer on a per circuit basis.

Fiber Hub Cross Connect is an optional service arrangement that cross-connects a DS1 Service, DS3 Service, or Base Rate Service termination to another service termination of the same speed at a designated Fiber Hub location.

Multiplexer Cross-Connection (MCC) is an arrangement that allows one channel of a multiplexed DS1 or DS3 Service to be connected to one channel of the same bit rate and like signaling of another multiplexed DS1 or DS3 Service. The lesser speed channel may be either an analog channel or a Base Rate channel provided at 64 Kbps of bandwidth between the two DS1 multiplexers, or DS1 Service between two DS3 multiplexers. MCC will be provided at all, or between two, Company locations where multiplexing is performed.

B. Definitions

Cascade Multiplexing Occurs when a higher speed channel is de-multiplexed to provide channels of a lesser capacity and one of the lesser capacity channels is further de-multiplexed.

Hub Rearrangement Occurs when an existing channelized digital service between a customer premises and a hub location is multiplexed onto a new higher speed digital service at the hub.

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8. CENTRAL OFFICE MULTIPLEXING AND CROSS CONNECT SERVICES (cont'd)

C. Terms and Conditions

1. Central Office Multiplexing can only be ordered in conjunction with DS3 Service, DS1 Service and/or Network Reconfiguration Service, and is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction may apply. Subject to availability, the customer may choose the multiplexing site.

2. End to end services may be provided via Central Office Multiplexing. The transmission parameters of the end to end service thus provided will be that of the lower capacity or bit rate.

3. A customer of the Cross Connect service must purchase service to the wire center from his designated premises. One charge applies per service cross-connected.

4. Customers utilizing Fiber Hub Cross-Connect must purchase service from their designated premises to the Fiber Hub location. Fiber Hub locations may be found in the National Exchange Carrier Association (NECA) Tariff, F.C.C. No. 4.

5. When service is provided between a customer designated premises and a Fiber Hub Cross- Connect site, service is considered to end at the hub locations. Performance is measured between the customer premises and the hub location.

6. It is the customer’s responsibility to assure that the channels connected at a Fiber Hub Cross- Connect site are compatible.

7. When Fiber Hub Cross-Connect is utilized to connect two services, the two cross-connected services are treated separately for service performance measurement and service interruption credit purposes.

8. A Hub Rearrangement charge applies only when; neither customer location changes, the existing multiplexer associated with the lower speed services is not physically moved, and all rearranged facilities are included in one customer request.

9. When Cascade Multiplexing is performed, whether in the same or different locations, a charge for the additional multiplexing unit also applies. Channel Mileage Termination and Channel Mileage charges apply between multiplexer locations.

10. Each Company wire center has been assigned to a Rate Zone. A table listing all Rate Zone assignments can be found in Part 15, Section 1, Paragraph V.

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8. CENTRAL OFFICE MULTIPLEXING AND CROSS CONNECT SERVICES (cont'd)

D. Technical References

Subject Technical Reference

OPTINET 64 Interface Specifications AM TR-OAT-000070

Digital Service AM TR-TMO-000101 Transmission Parameters

Service Description and Interface AM TR-TMO-000106 Requirements for FT-1 Digital Service

Service Description and Interface AM TR-TMO-000072 for OPTINET Optical Service

Digital Data Special Access Service TR-NWT-000341 (Telcordia) Transmission Parameters and Interface Combinations

High-Capacity Digital Service (1.544 Mbps) GR-54-CORE (Telcordia) Interface Generic Requirements for End Users

High Capacity Digital Special Access GR-342-CORE (Telcordia) Service - Transmission Parameter Limits and Interface Specifications

The Technical Reference(s) can be obtained from:

APEX Support Team (734) 523-7348

The Telcordia (formerly known as Bellcore) Publication(s) can be obtained from:

Telcordia Technologies, Inc. 8 Corporate Place, PYA 3A-187 Piscataway, New Jersey 08854-4156

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8. CENTRAL OFFICE MULTIPLEXING AND CROSS CONNECT SERVICES (cont'd)

E. Prices

1. Service Elements

Description /Billing Code/ Monthly Price

Cross Connection of Services OC-3 to OC-3 - per circuit /OCCCX/ $ 104.00

OC-12 to OC-12 - per circuit /OCCDX/ 550.00

OC-48 to OC-48 - per circuit /OCCFX/ 1,100.00 Multiplexer Cross-Connection - per central office

• DS1 Service - per analog or Base Rate channel /CMO1X/ .42

• DS3 Service - per DS1 Service

Zone 1 /CMO31/ 6.54 Zone 2 /CMO32/ 6.54 Zone 3 /CMO33/ 6.54

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8. CENTRAL OFFICE MULTIPLEXING AND CROSS CONNECT SERVICES (cont'd)

E. Prices (cont'd)

1. Service Elements (cont'd)

Nonrecurring Description /Billing Code/ Charge

Fiber Hub Cross-Connect

- DS0 to DS0 (Analog to Analog) 1 day response /CX901/ $200.00 3 day response /CX903/ 150.00

- DS0 to DS0 (Base Rate to Base Rate) 1 day response /CX901/ 200.00 3 day response /CX903/ 150.00

- DS1 to DS1 1 day response Zone 1 /CCUA1/ 290.00 Zone 2 /CCUA2/ 290.00 Zone 3 /CCUA3/ 290.00 3 day response Zone 1 /CCUB1/ 190.00 Zone 2 /CCUB2/ 190.00 Zone 3 /CCUB3/ 190.00

- DS3 to DS3 1 day response Zone 1 /CCUC1/ 305.00 Zone 2 /CCUC2/ 305.00 Zone 3 /CCUC3/ 305.00 3 day response Zone 1 /CCUD1/ 205.00 Zone 2 /CCUD2/ 205.00 Zone 3 /CCUD3/ 205.00

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8. CENTRAL OFFICE MULTIPLEXING AND CROSS CONNECT SERVICES (cont'd)

E. Prices (cont'd)

1. Service Elements (cont'd)

Nonrecurring Description /Billing Code/ Charge

Hub Rearrangement Record Charge

- per DS3 to DS1 multiplexer rearranged

Zone 1 /NRBE1/ $500.00 Zone 2 /NRBE2/ 500.00 Zone 3 /NRBE3/ 500.00

- per DS1 to Analog/Base Rate multiplexer rearranged

Zone 1 /NRBE1/ 400.00 Zone 2 /NRBE2/ 400.00 Zone 3 /NRBE3/ 400.00

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8. CENTRAL OFFICE MULTIPLEXING AND CROSS CONNECT SERVICES (cont’d)

E. Prices (cont’d)

1. Service Elements (cont’d)

Monthly Payment Description Term Payment Plans /Billing Code/ Monthly 12 Months 24 Months 36 Months 60 Months

Central Office Multiplexing - DS1 to Analog/Base Rate/128, 256 or 384

Zone 1 /QMVX1/ $575.00 $400.00 $325.00 $300.00 $285.00 Zone 2 /QMVX2/ 575.00 400.00 325.00 300.00 285.00 Zone 3 /QMVX3/ 575.00 400.00 325.00 300.00 285.00

- DS3 to DS1

Zone 1 /QM3X1/ 900.00 700.00 650.00 600.00 550.00 Zone 2 /QM3X2/ 900.00 700.00 650.00 600.00 550.00 Zone 3 /QM3X3/ 900.00 715.00 650.00 600.00 550.00

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8. CENTRAL OFFICE MULTIPLEXING AND CROSS CONNECT SERVICES (cont'd)

E. Prices (cont'd)

2. Payment Plans

• Month to Month Cross Connection of Services (OC-3 to OC-3 and OC-12 to OC-12) is available on a month to month basis.

Central Office Multiplexing is available on a month to month basis.

• Term Payment Plans Central Office Multiplexing is available under a Term Payment Plan (TPP) whereby customers must select either a 12, 24, 36 or 60 month period. After the selected Term Payment Plan period is satisfied, the monthly rate will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A Single Payment Option is available for Central Office Multiplexing. Refer to Term Payment Plans - Single Payment Option in Part 15, Section 1.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. The termination charge for all TPP terms for Central Office Multiplexing and Cross Connect Services will be calculated as described in Term Payment Plans - Termination Charges in Part 15, Section 1.

4. Credit Allowance

A credit allowance will be given for interruption of service when the outage consists of 30 consecutive minutes, or more, from the time that the Company is notified, or the outage is discovered by the Company, whichever is earlier. Refer to Credit Allowances in Part 15, Section 1 for calculating credit allowances. (Utilize Step 2 “for two-point services” to compute the credit allowance.) Credit allowances for circuits affected by a mux or cross-connect failure are calculated on a “by circuit” basis according to the type of circuit affected.

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9. NETWORK RECONFIGURATION SERVICE (NRS)

A. Description

Network Reconfiguration Service (NRS) gives customers the ability to reconfigure individual channel segments within their networks via electronic cross-connections. These segments may consist of DS3 Service, DS1 Service, 128, 256 and 384 Service and Base Rate Service. Customers may also reconfigure individual channels that are part of a reconfigurable multiplexed DS1 Service or multiplexed DS3 Service. Although NRS is focused primarily on digital services, customers may utilize NRS with analog services by ordering reconfigurable DS1’s equipped with Central Office Multiplexing in addition to the NRS DS1 Terminations and then using the multiplexed DS1 for the transport of the analog services. Customer access to NRS may be made directly by the customer utilizing customer-provided terminal equipment on the customer’s premises in conjunction with a dial-in line. Access is also available through a Company attendant reached by a dial-access telephone line.

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9. NETWORK RECONFIGURATION SERVICE (cont’d)

B. Definitions

Access Arrangement Provides the interface between the customer and the NRS system. An Access Arrangement must be purchased for each concurrent customer user of the NRS system. The Company issues a SecurID card to the customer user for each Access Arrangement when Attendant Service is not utilized.

NRS Training Provides for additional training requested by the customer beyond the training session included with the initial installation of the NRS system.

Attendant Access Provides for reconfiguration activities to be performed by a Company attendant at the direction of the customer. The customer may request that the commands be performed on demand or at a later, scheduled time. Attendant Access cannot be purchased independently, but is available to customers that access NRS through a dial-up arrangement.

Database Modification A customer initiated change to their network database subsequent to the initial database setup. These changes include:

• Addition or deletion of channel/facility terminations at the NRS system location.

• Addition, deletion or change in the customer’s master security word.

Port Termination Connects a local distribution channel, or channel mileage, to an NRS location allowing the connected service to be reconfigured. All services in a customer’s NRS database must be terminated at an NRS system location. Only services included in a customer’s NRS database may utilize the NRS termination feature.

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9. NETWORK RECONFIGURATION SERVICE (cont’d)

C. Terms and Conditions

1. NRS will be available on a continuous basis except for the performance of scheduled preventative and routine maintenance or scheduled software updates. The customer will be notified at least 24 hours in advance of any scheduled service interruptions.

2. NRS system locations are found in the National Exchange Carrier Association, Inc., Tariff F.C.C. No. 4.

3. Services that are cross-connected by the Network Reconfiguration Service will not operate properly unless they have identical technical characteristics to ensure compatibility and proper operation. NRS customers are responsible for the compatibility of the services they choose to cross-connect.

If the Company determines that the technical characteristics of services selected for cross- connection by the customer are not compatible, they will advise the customer and give them the opportunity to change the order.

4. Network Reconfiguration Service is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction charges may apply.

5. Each Company wire center has been assigned to a Rate Zone. A table listing all Rate Zone assignments can be found in Part 15, Section 1, Paragraph V.

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9. NETWORK RECONFIGURATION SERVICE (cont’d)

D. Features

1. Optional Features

NRS Training Additional training, beyond that provided with the initial installation, is available.

Attendant Access The customer may chose to have reconfiguration activities performed by the Company. (See Definitions preceding.)

Database Modification Subsequent to the initial installation, the customer may request modification to the database. (See Definitions preceding.)

E. Technical References

Subject Technical Reference

Ameritech OPTINET Reconfiguration Interface Specifications AM TR-TMO-000064

The Technical Reference can be obtained from:

APEX Support Team (734) 523-7348

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9. NETWORK RECONFIGURATION SERVICE (cont’d)

F. Prices

1. Service Elements

Monthly Payment Term Payment Plans Description Nonrecurring 12 36 60 /Billing Code/ Charge Months Months Months Monthly

NRS Service Charge - per customer database /FN6DD/ $4,800.00 $228.00 $204.00 $192.00 $240.00

NRS Access Arrangement - per arrangement /RNQPA/ 75.00 199.50 178.50 168.00 210.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 127 SECTION 3 - Digital Private Line Services

9. NETWORK RECONFIGURATION SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Description 12 36 60 /Billing Code/ Months Months Months Monthly

NRS System Location Port Termination - per termination

• Base Rate /PT5/ $ 19.00 $ 17.00 $ 16.00 $ 20.00

• DS1 Zone 1 /PQD11/ 45.60 40.80 38.40 48.00 Zone 2 /PQD12/ 45.60 40.80 38.40 48.00 Zone 3 /PQD13/ 45.60 40.80 38.40 48.00

• DS3 Zone 1 /R6SX1/ 166.25 148.75 140.00 175.00 Zone 2 /R6SX2/ 166.25 148.75 140.00 175.00 Zone 3 /R6SX3/ 166.25 148.75 140.00 175.00

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9. NETWORK RECONFIGURATION SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont’d)

Description Nonrecurring /Billing Code/ Charge

Optional Features

Database Modification - per modification /FN6DC/ $50.00

Attendant Access - per first 30 minutes (per occurrence) /NRBN1/ 55.00 - per additional 15 minute increments /NRBNA/ 10.00

NRS Training - per hour of additional training /NRBNT/ 50.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 129 SECTION 3 - Digital Private Line Services

9. NETWORK RECONFIGURATION SERVICE (cont’d)

F. Prices (cont'd)

2. Payment Plans

• Month to Month Network Reconfiguration Service is available on a month to month basis.

• Term Payment Plans Network Reconfiguration Service is available under the Term Payment Plan (TPP) whereby customers must select either a 12, 36 or 60 month period. After the selected Term Payment Plan period is satisfied, the monthly rate will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A Single Payment Option is available for this service. Refer to Term Payment Plans - Single Payment Option in Part 15, Section 1.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. The termination charge for all TPP terms for Network Reconfiguration Service will be calculated as described in Term Payment Plans - Termination Charges in Part 15, Section 1.

4. Credit Allowance

A credit allowance will be given for failure to meet the installation interval service date or for interruption of service. Refer to Credit Allowances in Part 15, Section 1 for calculating credit allowances. (Utilize Step 2 “for two-point services” to compute the credit allowance.) Credit allowances for circuits affected by an NRS failure are calculated on a “by circuit” basis according to the type of circuit affected.

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PART 15 - Dedicated Telecommunications Services Original Sheet 130 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE

A. Description

Multi-service Optical Network Ring (MON Ring) Service provides high volume optical transport utilizing multiplexing technology in a dedicated ring configuration. Multiple data signals are transmitted over fiber-optic cable using different wavelengths of light. Each of these wavelengths represents a transmission channel in the MON Ring system and is protocol independent of every other channel in the system.

MON Ring Service is only available within the Local Access and Transport Areas (LATAs) served by and within the service territories of the Company.

MON Ring Service allows customers to combine their multiple data signals so that they can be amplified and transported over one network. MON Ring Service provides dedicated capacity over a single pair of fiber in two directions that increases capacity without limiting customer-required data interfaces.

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE

A. Description

Sub-Rate Systems

• Sub-Rate System – provides a multiplexing system operating at 1.25 Gbps with 4 ports. Applicable to ESCONTM, Fast Ethernet, D1 Video, DVB-ASI Video, and OC-3/OC-3c port interfaces. Sub-rate multiplexing is offered at the serving wire center only for OC-3/OC-3c./1/

• ESCONTM Sub-Rate System - provides a multiplexing system which allows customers to put up to 8 ESCONTM Channels (no other protocol) on one port card./1/

• GigE/FC/FICONTM Sub-Rate System - provides a multiplexing system which allows customers to put 2 Gigabit Ethernet (GigE) Channels or 2 Fibre Channels (1.0625 Gbps) or 2 FICONTM Channels (1.0625 Gbps) or any combination thereof totaling two channels on the sub-rate system. Fibre Channel (2.125 Gbps) and FICONTM (2.125 bps) cannot be placed on this sub-rate system.

• OC-3/OC-12 Sub-Rate System – provides a multiplexing system which allows customers to put up to either 4 OC-3/OC-3c signals or OC-12/OC-12c signals or combinations thereof on one card. This sub-rate multiplexing system will have independent timing which allows multiple OC-3/OC-3c services or OC-12/OC-12c services on one port card./1/

• SONET OC-48 Sub-Rate System – provides a multiplexing system which allows customers to put up to four (4) OC-48/OC-48c signals on one card./2/

/1/ Available where facilities and equipment permit. /2/ Available where facilities and equipment permit beginning November 30, 2005.

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

A. Description (cont'd)

MON Ring Service offers the following port interfaces:

IBM Protocols

• ESCONTM (200 Mbps) – Enterprise Systems Connection – An IBM duplex optical connection used for computer-to-computer data exchange. ESCONTM is limited to a maximum distance of 43 km and actual data throughput is distance sensitive. ESCONTM is offered as a riding circuit where facilities and equipment permit.

• ETR/CLOTM (8 Mbps – Manchester Encoded) – External Timing References/Control Link Oscillator. This protocol is used for IBM GDPSTM architecture for multiple-location host processors. ETR/CLOTM is limited to a maximum distance of 40 km./1/

• FICONTM (1.0625 Gbps and 2.125 Gbps) – A higher-speed evolution of ESCONTM, enabling 1 Gbps connectivity among mainframes, storage devices and peripherals. FICONTM is limited to a maximum distance of 100 km and actual data throughput is distance sensitive. 1.0625 Gbps service is offered as a riding circuit where facilities and equipment permit. 1.0625 Gbps service is capable of being multiplexed on the GigE/FC/FICONTM Sub-Rate System.

• ISC-1TM (1.0625 Gbps) – Inter-System Coupling – This protocol is used with IBM GDPSTM architecture for multiple-location host processors. ISC-1TM is limited to a maximum distance of 40 km./1/

• ISC-3TM (2.125 Gbps) – Inter-System Channel. ISC-3TM links have a peak data rate of 2.125 Gbps and can interconnect IBMTM eServer z900 systems for distances up to 100 km.

/1/ ESCONTM, ETRTM, FICONTM, ISCTM and GDPSTM are registered trademarks of the International Business Machines (IBM) Corporation, Armonk, NY 10504

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

A. Description (cont'd)

Other Protocols

• Fibre Channel (1.0625 Gbps and 2.125 Gbps) – an industry standard protocol used to interconnect Storage Area Networks (SANs). Fibre Channel is limited to a maximum distance of 100 km and actual data throughput is distance sensitive. 1.0625 Gbps service is offered as a riding circuit where facilities and equipment permit. 1.0625 Gbps service is capable of being multiplexed on the GigE/FC/FICONTM Sub-Rate System.

• Fast Ethernet – a version of Ethernet that allows data transmission rates of 100 Mbps. Offered as a riding circuit where facilities and equipment permit.

• Gigabit Ethernet – a version of Ethernet that allows data transmission rates of 1 Gbps. Gigabit Ethernet (GigE) offered as a riding circuit where facilities and equipment permit.

• 10 Gigabit Ethernet (WAN-PHY) – a version of Ethernet that allows data transmission rates of 9.953 Gbps with a WAN-PHY only interface.

• 10 Gigabit Ethernet (LAN-PHY) – a version of Ethernet that allows data transmission rates of 10.3125 Gbps with a LAN-PHY only interface.

• D1 Video – uncompressed digital video signal operating at 270 Mbps. Offered as a riding circuit where facilities and equipment permit.

• DVB-ASI Video – Digital Video Broadcasting – provides a 1310 nm optical interface at 270 Mbps. Offered as a riding circuit where facilities and equipment permit.

• SONET OC-3/OC-3c - provides a fiber-based 155.52 Mbps synchronous optical full duplex data transmission capability. Offered as a riding circuit where facilities and equipment permit./1/

• SONET OC-12/OC-12c - provides a fiber-based 622.08 Mbps synchronous optical full duplex data transmission capability. Offered as a riding circuit where facilities and equipment permit./1/

• SONET OC-48/OC-48c - provides a fiber-based 2488.32 Mbps synchronous optical full duplex data transmission capability. Offered as a riding circuit where facilities and equipment permit beginning November 30, 2005./1/

• SONET OC-192/OC-192c - provides a fiber-based 9953.28 Mbps synchronous optical full duplex data transmission capability./1/

/1/ These port interfaces are available at both the Customer Premises Node and the Central Office Node. All other port interfaces are available only at the Customer Premises Node.

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

B. Definitions

Bulk Power Provides for customer premises node power which will be required if the customer’s power source is AC.

Central Office Node Provides for the termination of service at a serving wire center.

Channel Mileage (CM) Provides for the transmission facilities between the serving wire centers associated with each node involved on the MON Ring. Channel mileage is calculated using the V and H coordinate method described in Part 15, Section 1. A one-mile minimum will be billed between nodes. A two-node ring configuration has a two-mile minimum, one mile from the Central Office Node to the Customer Premises Node, and one mile from the Customer Premises Node to the Central Office Node.

Channel Protection (Optional) Provides protection for a single channel toward the network. It does not protect the channel against failure towards the customer interface. Protection reduces the maximum individual channel capacity of the system.

Customer Premises Node Provides for the termination of service at the customer’s premises and presents the various selected ports to the customer.

Optical Amplifier Provides for an optical signal boost if the distance between nodes exceeds the transmission loss parameters (link loss specific). Engineering considerations may dictate the need for more than one optical amplifier on a circuit route. These additions may be service affecting. Optional amplifiers may be located at a Customer Premises Node, a Central Office Node or at a serving wire center.

Port Provides the channel interface at any Node location for each unprotected or protected channel.

Regenerator Provides for re-timing, re-shaping and regeneration of signals if degradation exceeds the dispersion or optical amplifier noise limits. Provided on a per shelf basis for up to 2.5 Gigabit Ethernet service and on a per circuit, per each location the circuit is regenerated basis for up to 10 Gigabit Ethernet service.

Sub-Rate System Allows for multiple ports, also called riding circuits, on a single wavelength.

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

C. Terms and Conditions

In addition to regulations set forth elsewhere in this Guidebook, the following regulations apply to MON Ring Service:

1. The customer-provided equipment must deliver the data signals for the MON Ring Service transport within the industry specification for the subscribed data services.

2. MON Ring Service provides physical layer transport only. The Company assumes no responsibility for the signals generated by the customer, for the quality of or defects in such signals, for the reception of signals by the customer, or address signaling to the extent addressing is performed by the customer. Error detection and correction of data generated by the customer is the customer's responsibility.

3. The service is considered interrupted when the customer reports a service disruption to the Company and the Company confirms that continuity of its service has been lost.

4. MON Ring Service may have distance limitations based on the services carried and may require routing through central offices based on loss limits between nodes. Services with facility length limitations may not be available on some MON rings, or may not be available between some nodes on certain MON rings.

5. Optical Amplifiers and/or Regenerators may have to be added to an MON Ring Service subsequent to the initial installation.

6. When additional services are added, such installation may cause a service interruption to existing unprotected channels, or a protection switch on protected channels.

7. Where conditions, equipment, and facilities permit, MON Ring Service will be offered in two configurations. Customers can purchase MON Ring with growth capacity up to 16 wavelengths or up to 32 wavelengths. The 32 wavelength system may, at the discretion of the Company, be built as two 16 wavelength systems sharing common fiber and some common equipment. Depending upon the configuration, conversion from a 16 wavelength MON Ring Service to a 32 wavelength MON Ring Service may not be available.

8. The minimum service period for MON Ring Service is 36 months or 60 months.

9. MON Ring Service is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction charges may apply.

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

C. Terms and Conditions (cont’d)

10. Floor space for subsequent shelf growth at a Central Office Node beyond the initial installation will be provided where available, but cannot be guaranteed for subsequent shelf growth beyond the initial installation.

11. Prior to confirming an order for service, the Company will provide a proposed route diagram to the customer.

12. Installation of service will not begin until the customer has accepted the proposed routing by the Company.

13. Channel protection may not be available for all interface types.

14. Conversion from MON Service to MON Ring Service is not available.

15. Conversions from any other lower speed services to MON Ring Service are not available.

16. Where conditions, equipment, and facilities apply, the customer must first order the MON Ring Transport System followed by the MON Ring Channels. When ordering riding services, the customer must first order the MON Ring Transport System, followed by a MON Ring Sub-rate System over which these services will be assigned. When riding services are ordered on a Sub- Rate System, they are represented by different rate elements than those services ordered directly on the MON Ring.

17. Services with time-delay sensitive protocols have facility length limitations and may affect the design/availability of MON Ring Service. (E.g., CPU to CPU communications have a maximum distance limitation of 60 km.) The Company will work cooperatively with the customer to determine if the desired services can operate between the customers designated premises.

18. Neither electrical interfaces nor optical add/drop multiplexing are available with this service.

19. OC-12/OC-12c, Gigabit Ethernet, Fibre Channel (1.0625 Gbps) and FICONTM (1.0625 Gbps) can be ordered directly on MON Ring, or as a riding service on a sub-rate system. Fibre Channel (2.125 Gbps) and FICONTM (2.125 Gbps) can only be ordered directly on MON Ring, and cannot be ordered on a sub-rate system. OC-12, Gigabit Ethernet, Fibre Channel (1.0625 Gbps) and FICONTM (1.0625 Gbps) when ordered on a sub-rate system, are represented by different rate elements than those ordered directly on the MON Ring.

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

D. Features

1. Standard Features

MON Ring Service is available in different ring configurations utilizing Central Office Nodes and Customer Premises Nodes. The total number of circuits and total usable bandwidth to the customer depends upon the mix of services ordered and the specific traffic patterns of the customer. The company will determine the appropriate wavelength assignment and the design of the MON Ring.

The minimum configuration would be two customer nodes either at a serving wire center or a customer premise site. If the customer nodes are not in a serving wire center, a central office management site for monitoring is required. An optical amplifier located at a serving wire center can be used as a monitoring site.

A combination of these configurations may be used in a network design depending on the customer’s traffic pattern.

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

D. Features (cont'd)

1. Standard Features (cont'd)

Diagram of MON Ring

Customer Location #2 D Mileage D to E NODE Mileage C to D

Customer Location #3 Central Office Ports E C

N P P N O o o O D r RATE ELEMENTS r D - Customer Premises Nodes (3) E t t E s - Central Office Nodes (3) s - Channel Mileage (30) (example: 5 miles per route x 6 routes = 30 Mileage E to F miles Total Ring) Mileage B to C - Ports (x) F - Bulk Power (as required) B - Regenerators (as required) N P - Optical Amplifiers (as required) P N O o o O D r r D

E t t E s s Ports

Central Office Central Office NODE Mileage F to A Mileage A to B A Customer Location #1

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

D. Features (cont'd)

1. Standard Features (cont'd)

Route Diversity

• MON Ring Service is configured with diversely routed fiber whenever possible. MON Ring Service will be available for protected channels 99.999% of the time and protected channels will switch within 50 milliseconds (not to exceed 2 seconds). Equipment interfaces towards the customer are not protected. Unprotected channels will be lost in the event of a fiber path failure on which the circuit is assigned.

• Routing of fiber may be diversified from the customer’s property line to their serving wire center or alternate serving wire center to ensure that loop fibers follow separate paths to the serving central office. In addition, IOF fiber (if applicable) may be diversified to ensure that with any serving wire center Central Office Node, the fibers do not egress and ingress at the same point. In cases where the central office does not have multiple entrance fiber facilities, the section of the fiber from the closest manhole (to the serving wire center) will be routed within the same duct structure.

• At the customer’s request, additional protection to the Customer Premises Nodes can be provided via diverse dual entrance facilities. This special request will cause the customer to incur special construction cost. Without this special request, diverse fiber is provided to the closest manhole to the customer location property line. The customer or building owner is responsible for providing conduit designed to meet industry standards and local fire and safety codes from the property line to the building to within the premises. The customer determines route and method of protection inside the premises.

• In the case where dual entrance facilities are not established at the customer premises, facilities routed within the same duct structure from the property line to the building equipment location are not diverse.

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PART 15 - Dedicated Telecommunications Services Original Sheet 140 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

E. Technical References

The customer interfaces to MON Ring Service are as specified in:

Subject Technical Reference

Ameritech LAN Interconnect Service - Token Ring Interface AM TR-NIS-000100 Specifications Ameritech LAN Interconnect Service - CSMA/CD Interface Specifications AM TR-NIS-000104 Ameritech OC-3, OC-12, OC-48 and OC-192 Service Interface Specifications AM-TR-NIS-000111 Ameritech Digital Service Transmission Parameters AM-TR-TMO-000101 Ameritech Service’s Network Channel and Network Channel Interface Codes AM-TR-TMO-000080 Ameritech Technical Interface Specifications (ESCONTM) AM-TR-NIS-000096 AM-TR-NIS-000107 IBM Documentation (ESCONTM) IBM SA22-7202-XX IBM SA23-0394-XX Fibre Channel (also includes FICONTM and ISCTM) ANSI X3.T9.3 Fast Ethernet ANSI/IEEE 802.3 GigaBit Ethernet IEEE 802.3x and z IEEE802.3ae D1 Video ANSI/SMPTE 259M

The Technical References can be obtained from:

APEX Support Team (734) 523-7348

The Telcordia Technologies Research Publication(s) can be obtained from:

Telcordia Technologies, Inc. 8 Corporate Place, PYA 3A-184 Piscataway, New Jersey 08854-4156

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

F. Prices

1. Service Elements

Nonrecurring Description /Billing Code/ Charge

Administrative Charge - per service order /ORCMX/ $ 125.00

Design and Central Office Connection Charge - per riding circuit /NRBCL/ 600.00

Customer Connection Charge

Service Establishment - per node /NRBBL/ 7,500.00

Subsequent Installation - per subsequent shelf /NHCNL/ 1,000.00

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 36 60 Monthly Description /Billing Code/ Months Months Extension

MON Ring Transport System

Customer Premises Node (includes first shelf) /F2ND1/ $ 7,800.00 $ 6,240.00 $10,920.00 - per subsequent shelf /F2NDS/ 5,850.00 4,680.00 8,190.00

Central Office Node (includes first shelf) /F2NC1/ 7,800.00 6,240.00 10,920.00 - per subsequent shelf /F2NCS/ 5,850.00 4,680.00 8,190.00

Channel Mileage - per V&H mile or fraction thereof /1L5XX/ 325.00 260.00 455.00

Optical Amplifier (as required) - C band (per location) /67QXX/ 5,400.00 3,600.00 7,600.00 - L band (per location) /67QSX//1/ 5,400.00 3,600.00 7,600.00

Regenerator - (as required) - up to 2.5 Gbps (per shelf) /V8RXX/ 7,500.00 5,000.00 10,500.00 - up to 10 Gbps (per circuit, per each location) /V8R2C/ 15,000.00 10,000.00 21,000.00

Bulk Power (as required) - per first shelf (shelves 1-4) /CBVDX/ 2,000.00 1,600.00 2,600.00 - per subsequent shelf (shelves 5-8) /CBVDS/ 1,600.00 1,300.00 2,100.00

/1/ Available where facilities and equipment permit.

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10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 36 60 Monthly Description /Billing Code/ Months Months Extension

MON Ring Channels

Ports - per port/per circuit terminating location

ETR/CLOTM - unprotected channel /POYKW/ $ 975.00 $ 750.00 $ 1,400.00

FICONTM (1.0625 Gbps) - unprotected channel /POYMW/ 975.00 750.00 1,400.00 - protected channel /POYMP/ 1,950.00 1,500.00 2,800.00

FICONTM (2.125 Gbps) - unprotected channel /POYWW/ 1,700.00 1,300.00 2,400.00 - protected channel /POYWP/ 3,400.00 2,600.00 4,800.00

ISC-1TM - unprotected channel /POYJW/ 3,250.00 1,250.00 4,600.00 - protected channel /POYJP/ 3,600.00 2,500.00 5,000.00

ISC-3TM - unprotected channel /POY9W/ 3,750.00 2,500.00 5,000.00 - protected channel /POY9P/ 7,500.00 5,000.00 10,000.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 144 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 36 60 Monthly Description /Billing Code/ Months Months Extension

MON Ring Channels (cont’d)

Ports (cont’d) - per port/per circuit terminating location (cont’d)

Fibre Channel (1.0625 Gbps) - unprotected channel /POYNW/ $1,200.00 $ 900.00 $1,700.00 - protected channel /POYNP/ 2,400.00 1,800.00 3,400.00

Fibre Channel (2.125 Gbps) - unprotected channel /POYYW/ 1,700.00 1,300.00 2,400.00 - protected channel /POYYP/ 3,400.00 2,600.00 4,800.00

Gigabit Ethernet - unprotected channel /POYLW/ 1,200.00 900.00 1,700.00 - protected channel /POYLP/ 2,400.00 1,800.00 3,400.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 145 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 36 60 Monthly Description /Billing Code/ Months Months Extension

MON Ring Channels (cont'd)

Ports (cont'd) - per port/per circuit terminating location (cont'd)

10 Gigabit Ethernet(WAN PHY) - unprotected channel /POYTW/ $15,000.00 $12,500.00 $21,000.00 - protected channel /POYTP/ 20,000.00 16,700.00 28,000.00

10 Gigabit Ethernet(LAN-PHY) - unprotected channel /POYUW/ 15,375.00 12,815.00 21,525.00 - protected channel /POYUP/ 20,500.00 17,120.00 28,700.00

SONET OC-12/OC-12c - unprotected channel /POYFW/ 1,300.00 1,000.00 1,900.00 - protected channel /POYFP/ 2,600.00 2,000.00 3,700.00

SONET OC-48/OC-48c/1/ - unprotected channel /POYGW/ 4,400.00 3,700.00 6,000.00 - protected channel /POYGP/ 6,600.00 5,560.00 9,000.00

SONET OC-192/OC-192c - unprotected channel /POYOW/ 15,000.00 12,500.00 21,000.00 - protected channel /POYOP/ 20,000.00 16,700.00 28,000.00

/1/ Available where facilities and equipment permit.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 146 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans 36 60 Monthly Description /Billing Code/ Months Months Extension

MON Ring Channels (cont’d)

Ports (cont’d) - per port/per circuit terminating location (cont’d)

GigE/FC/FICONTM Sub-Rate System - unprotected channel /POY1W/ $ 875.00 $ 700.00 $1,140.00 - protected channel /POY1P/ 1,750.00 1,400.00 2,280.00

GigE Riding Circuit/1/ - unprotected channel /POY4W/ 500.00 400.00 650.00 - protected channel /POY4P/ 1,000.00 800.00 1,300.00

Fibre Channel (1.065Gbps) Riding Circuit/1/ - unprotected channel /POY6W/ 500.00 400.00 650.00 - protected channel /POY6P/ 1,000.00 800.00 1,300.00

FICONTM (1.065 Gbps) Riding Circuit/1/ - unprotected channel /POY7W/ 400.00 320.00 480.00 - protected channel /POY7P/ 800.00 640.00 960.00

/1/ Available only when ordered with GigE/FC/FICONTM Sub-Rate System.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 147 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans 36 60 Monthly Description /Billing Code/ Months Months Extension

MON Ring Channels (cont'd)

Ports (cont'd) - per port/per circuit terminating location (cont'd)

ESCON TM/1/ - unprotected channel /PWY1W/ $1,300.00 $1,000.00 $1,900.00 - protected channel /PWY1P/ 2,600.00 2,000.00 3,700.00

Fast Ethernet/1/ - unprotected channel /PWY2W/ 1,300.00 1,000.00 1,900.00 - protected channel /PWY2P/ 2,600.00 2,000.00 3,700.00

D1 Video Circuit/1/ - unprotected channel /PWY3W/ 1,300.00 1,000.00 1,900.00 - protected channel /PWY3P/ 2,600.00 2,000.00 3,700.00

DVB-ASI Video/1/ - unprotected channel /POY8W/ 2,100.00 1,650.00 3,075.00 - protected channel /POY8P/ 4,200.00 3,300.00 5,775.00

SONET OC-3/OC-3c/1/ - unprotected channel /PWY4W/ 1,300.00 1,000.00 1,900.00 - protected channel /PWY4P/ 2,600.00 2,000.00 3,700.00

/1/ Available only where facilities and equipment permit beginning November 30, 2005.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 148 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont’d)

F. Prices (cont'd)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans 36 60 Monthly Description /Billing Code/ Months Months Extension

MON Ring Channels (cont'd)

Ports (cont'd) - per port/per circuit terminating location (cont'd)

OC-48 Sub-Rate System/1/ - unprotected channel /POYRW/ $3,500.00 $2,750.00 $4,250.00 - protected channel /POYRP/ 7,000.00 5,500.00 8,500.00

SONET OC-48/OC-48c Riding Circuit/1//2/ - unprotected channel /POYZW/ - protected channel /POYZP/ 1,900.00 1,200.00 2,800.00 3,800.00 2,400.00 5,600.00

/1/ Available only where facilities and equipment permit beginning November 30, 2005. /2/ Available only when ordered with OC-48 Sub-Rate System beginning November 30, 2005.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 149 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 36 60 Monthly Description /Billing Code/ Months Months Extension

MON Ring Channels (cont'd)

Ports (cont'd) - per port/per circuit terminating location (cont'd)

Sub-Rate System/1/ - unprotected channel /POYSW/ $1,300.00 $1,000.00 $1,900.00 - protected channel /POYSP/ 2,600.00 2,000.00 3,700.00

ESCONTM Riding Circuit/1//2//3/ - unprotected channel /POYHW/ 100.00 100.00 150.00 - protected channel /POYHP/ 100.00 100.00 150.00

Fast Ethernet Riding Circuit/1//2/ - unprotected channel /POYCW/ 325.00 250.00 400.00 - protected channel /POYCP/ 500.00 400.00 650.00

D1 Video Riding Circuit /1//2/ - unprotected channel /POYVW/ 100.00 100.00 150.00 - protected channel /POYVP/ 100.00 100.00 150.00

DVB-ASI Video Riding Circuit/1//2/ - unprotected channel /PWY5W/ 100.00 100.00 100.00 - protected channel /PWY5P/ 100.00 100.00 100.00

SONET OC-3/OC-3c Riding Circuit/1//2//4/ - unprotected channel /POYEW/ 100.00 100.00 150.00 - protected channel /POYEP/ 100.00 100.00 150.00

/1/ Available where facilities and equipment permit. /2/ Available only when ordered with a Sub-Rate System. /3/ Also available with ESCON Sub-Rate System. /4/ Also available with SONET OC-3/OC-12 Sub-Rate System.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 150 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 36 60 Monthly Description /Billing Code/ Months Months Extension

MON Ring Channels (cont’d)

Ports(cont’d) - per port/per circuit terminating location(cont’d)

ESCONTM Sub-Rate System/1/ - unprotected channel /POY2W/ $1,500.00 $1,125.00 $1,950.00 - protected channel /POY2P/ 3,000.00 2,250.00 3,900.00

OC-3/OC-12 Sub-Rate System/1/ - unprotected channel /POY3W/ 1,000.00 750.00 1,300.00 - protected channel /POY3P/ 2,000.00 1,500.00 2,600.00

OC-12/OC-12c Riding Circuit/1//2/ - unprotected channel /POY5W/ 500.00 375.00 700.00 - protected channel /POY5P/ 1,000.00 750.00 1,400.00

/1/ Available only where facilities and equipment permit. /2/ Available only when ordered with OC-3/OC-12 Sub-Rate System.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 151 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

F. Prices (cont'd)

2. Payment Plans

• Term Payment Plans

MON Ring Service TPP provides the customer with discounted rates for a 36 or 60-month period.

After the expiration of 25 months of a 36-month TPP term or 42 months of a 60-month TPP term, any MON Ring components added to the existing service configuration provided under that TPP will be billed under monthly extension rates.

Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO)

A single payment option is available for this service. Refer to Term Payment Plans in Part 15, Section 1 for calculating Single Payment Options.

3. Termination Charges

Termination Charges will apply to services terminated prior to the contracted period. For purposes of applying Termination Charges, all rate elements making up a MON Ring service are subject to Termination Charges.

If during the duration of the TPP, the customer wishes to rearrange or move a Customer Premises Node, a Termination Charge will apply.

Refer to Termination Charges in Part 15, Section 1 for calculating Termination Charges.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 152 SECTION 3 - Digital Private Line Services

10. MULTI-SERVICE OPTICAL NETWORK RING SERVICE (cont'd)

F. Prices (cont'd)

4. Credit Allowance

A credit allowance will be given for interruptions of service. An interruption of service will start when an inoperative service is reported to the Company and end when the service is operative.

Any protected service interruption of greater than 10 consecutive seconds as a result of a failure on the protected portion of the circuit will result in a credit equal to one month’s bill for the individual port-to-port connections involved.

If the interruption occurs on an unprotected portion of the circuit, normal terms and conditions for credit allowances will apply.

In any month, as a result of an interruption, the total credit per rate element of the interrupted service may not exceed 100 percent of the monthly charge for that particular rate element.

Refer to Credit Allowance in Part 15, Section 1 for calculating Credit Allowances.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 1 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE

A. Description

GigaMAN Service is a service which provides the transmission of data at a discrete bit rate of 1 Gbps, in Ethernet format. This service can be used to connect customer-designated premises in a Node-to-Node configuration. Within a single network, one or more channels may be provided.

GigaMAN Service can be used to seamlessly extend customer local area networks to off-site locations such as data centers, storage locations or satellite office locations within the same metro area. Applications that could be used with GigaMAN Service include LAN-to-LAN connectivity, CAD/CAM file transfer, telemedicine and business continuity transport.

B. Definitions

Channel Mileage (CM) Provides for the transmission facilities between the serving wire centers associated with the designated customer premises.

Repeater (RPTR) A repeater (circuit regenerator) will be used to extend the transmission of GigaMAN Service. The Company will determine when repeaters are necessary. In addition, the first repeater in a multi- repeater circuit will be used for service alarming and monitoring purpose.

Node Termination (NT) Provides for the communications path between the customer-designated premises and the serving wire center of that premise, or between two customer-designated premises.

Wire Center Termination (WCT) Provides for the termination of digital transmission facilities between two or more serving wire centers. These transmission facilities are categorized as channel mileage, as described above.

GigaMAN is a registered trademark of AT&T Knowledge Ventures

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 2 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

C. Terms and Conditions

In addition to regulations set forth elsewhere in this Guidebook, the following regulations apply to GigaMAN Service:

1. The customer provided equipment (CPE) must deliver the data signal for the GigaMAN transport within the industry specification for the subscribed data service. See Paragraph E. - Technical References.

2. GigaMAN provides physical layer transport only. The Company assumes no responsibility for the through transmission of signals generated by CPE, for the quality of or defects in such transmission, for the reception of signals by CPE, or address signaling to the extent addressing is performed by CPE. Error detection and correction of data generated by CPE is the customer's responsibility.

3. GigaMAN is designed to provide connectivity at the discrete bit rate of 1 Gbps. The service is considered interrupted when the customer reports to the Company and the Company confirms that continuity has been lost.

4. GigaMAN Service is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction charges may apply.

5. Node terminations are not allowed in Company wire centers.

6. Interoffice mileage is calculated using the V and H coordinate method described in Part 15, Section 1 of this Guidebook.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 3 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

C. Terms and Conditions (cont'd)

7. Repeaters (circuit regenerators) will be located in Company wire centers as required. A monthly charge will be associated with each repeater network element, except for the first repeater in a circuit path (as the first repeater is also used for service alarming and monitoring purposes). GigaMAN circuits provisioned prior to November 19, 2003 may not have required a repeater.

8. Route diversity options are available where facilities exist. If appropriate facilities do not exist, Special Construction charges may apply. Route diversity is only available to customers with service installed after November 19, 2003.

9. Additional repeaters (circuit regenerators) may be required on the diverse or alternately routed path when Protection options are ordered by the customer. The need for repeaters on the protected path will be determined by the Company. Additional charges will apply.

10. Channel Mileage charges are applicable on both paths of the GigaMAN Service when any of the Protection Options are ordered.

11. If Protection Options are added to an existing GigaMAN circuit that was installed after November 19, 2003, a temporary service interruption will result as the new protected circuit must be re-designed and re-installed. Termination Charges will not apply for the circuit redesign (see Term Pricing Plan following for requirements). This installation must occur during an agreed-upon maintenance window between a designated customer representative and the Company. The customer will be responsible for providing adequate floor space, as determined by the Company, to accommodate additional equipment bays and related power protection equipment (such as batteries). Protection Options are contingent on availability of equipment and fiber facilities from premise to premise. Other Special Construction charges, as necessary, may apply.

12. GigaMAN Service is not available in a meet-point billing arrangement involving other Carriers.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 4 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

D. Features

1. Standard Features

All basic service configurations provide full duplex transmission. There is one type of GigaMAN Service configuration: Node-to-Node Service.

Node-to-Node Service

A Node-to-Node configuration connects two customer-designated premises either inter- or intra-wire center.

The following diagram depicts a Node-to-Node configuration connecting two customer-designated premises served from the same wire center.

Node-to-Node Configuration (Intra-Wire Center)

PREMISES SERVING WIRE PREMISES A CENTER B

• NT NT •

NT = Node Termination

Applicable service elements are: • Node Termination (two applicable)

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 5 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

D. Features (cont'd)

1. Standard Features (cont’d)

Node-to-Node Service (cont’d)

The following diagram depicts a Node-to-Node configuration connecting two customer-designated premises with serving wire centers located "x" miles apart.

Node-to-Node Configuration ("x" miles apart) (Inter-Wire Center)

PREMISES SWC A SWC B PREMISES A B

• NT WCT CM WCT NT • RPTR "x" miles

NT = Node Termination WCT = Wire Center Termination CM = Channel Mileage SWC = Serving Wire Center RPTR = Repeater (where required)

Applicable service elements are: • Node Termination (two applicable) • Wire Center Termination (two applicable) • Channel Mileage ("x" miles) • Repeater (where required)

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 6 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

D. Features (cont'd)

2. Optional Features

Diversity and Protection Options are available where facilities exist. If appropriate facilities do not exist, Special Construction charges may apply. End-to-end diversity can be achieved by coupling Alternative Wire Center Diversity with Inter-Wire Center Diversity, in those instances where each end of a circuit is served out of different serving wire centers. Diversity and Protection Options are only available to customers with service installed after November 19, 2003. In addition to charges for the various Protection Options, normal charges for the Node Termination, Wire Center Termination and Channel Mileage will apply. Protection Options provide additional levels of reliability to GigaMAN Service. There are multiple options for Protection at each end of a two point circuit. The options at each end do not need to be the same, but both ends must include some form of Protection, for any to be offered. A GigaMAN circuit cannot include Protection at only one end (excluding Power Protection which can be at just one end, or both ends, of the circuit).

The following options are available for Diversity:

• Local Channel Diversity • Inter-Wire Center Diversity • Alternate Wire Center Diversity

The following options are available for Protection:

• Equipment Only Protection • Equipment Plus Fiber Path Protection, with … - Alternate Wire Center Path Protection, or - Local Channel Path Protection • Inter-Wire Center Path Protection/1/ • Power Protection

/1/ Inter-Wire Center Path Protection must be ordered in conjunction with an Equipment Protection option at each end of the circuit.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 7 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

D. Features (cont'd)

2. Optional Features (cont’d)

Local Channel Diversity Local Channel Diversity provides for a transmission path between a designated customer premise and the standard serving wire center (SWC) that is diverse from the normal/standard transmission path. Local Channel Diversity requires two eligible services purchased by (or for the benefit of) the same customer. The Company will determine which services are eligible based on technical or operational limitations. With this arrangement, one or more node termination channels will be provisioned over the standard route and one or more node termination channels will be provisioned over a diverse route. Local channel diversity does not provide for full diversity; it only allows for diversity from the splice point closest to the customer’s property line to the SWC. If a customer desires full diversity, arrangements must be made for constructing dual entrance facilities into the customer's premise, at the customer's expense.

Alternate Route

Normal Route Customer Serving Wire Premise Center

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 8 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

D. Features (cont'd)

2. Optional Features (cont'd)

Inter-Wire Center Diversity Inter-Wire Center Diversity arrangements presume that each end of a GigaMAN node termination channel is served out of a different serving wire center (SWC). This arrangement provides a transmission path for GigaMAN node termination channels between the customer's designated SWC and the serving wire center at the distant end of the circuit, over a transmission path that is separate from the standard transmission path between the two wire centers. Interoffice mileage will be calculated between the intermediate serving wire centers along the circuit path of the diversely routed GigaMAN Service. Inter- Wire Center Diversity requires two eligible services purchased by (or for the benefit of) the same customer. The Company will determine which services are eligible based on technical or operational limitations.

Inter-wire center diversity does not provide for full diversity; it only offers interoffice diversity. If a customer desires full diversity, Alternate Wire Center Diversity must be implemented along with Inter-Wire Center Diversity. Additionally, arrangements must be made for constructing dual entrance facilities at the customer's premise, at the customer's expense.

Intermediate Intermediate SWC SWC

Alternate Route

SWC SWC Customer Customer Premise Premise Normal Route A Z

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 9 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

D. Features (cont'd)

2. Optional Features (cont'd)

Alternate Wire Center Diversity Alternate Wire Center Diversity is for the local loop only. It provides a node termination transmission path for GigaMAN service between the customer’s designated premises and a wire center that is not the normal (or standard) serving wire center. The Company will choose the alternate wire center closest to the customers designated premise that is capable of providing GigaMAN Service over the alternate route. Alternate Wire Center Diversity does not require the purchase of two GigaMAN Services by (or for the benefit of) the same customer, nor does it require the customer to have an existing GigaMAN circuit operating over the normal (or standard) route to the normal (or standard) serving wire center. With this arrangement, one or more node termination channels will be provisioned over the alternate route. If a customer desires full diversity, arrangements must be made for constructing dual entrance facilities into the customer's premise, at the customer's expense.

Alternate SWC

Alternate Route

Normal Route Customer Serving Wire Premise Center (SWC)

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 10 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

D. Features (cont'd)

2. Optional Features (cont'd)

Equipment Only Protection Equipment Only Protection offers a network design where one GigaMAN signal will be routed down two different fiber pairs that co-exist in the same cable and conduit structure, and terminate at the customer’s premise in the same device (but into separate and distinct modules). Protection switching will occur between the two modules if necessary. Should one fiber pair or network element become defective, service will be maintained through 50 millisecond protection switching within the network terminating equipment (NTE) at the customer’s demarcation point. If both fiber pairs are cut, an Out Of Service condition will result. This form of protection can only be ordered per loop (per end) for each circuit the customer wishes to protect.

Equipment Plus Fiber Path Protection Equipment Plus Fiber Path Protection offers varying degrees of path protection for each terminating end of the circuit. For circuits that are served by different wire centers, Equipment Plus Fiber Path Protection may be combined with Inter-Wire Center Path Protection, to ensure a fully-protected circuit.

Equipment Plus Fiber Path Protection, with…

Alternate Wire Center Path Protection One GigaMAN (1 Gbps) signal will be routed over one fiber pair of the protected circuit from the customer’s premise to the normal serving wire center, and a duplicate GigaMAN (1 Gbps) signal will be routed over a diversely routed fiber pair to the Alternate Wire Center selected by the Company. If any location between the fiber paths is closer than 10 feet, the location or locations will be disclosed to the customer. The customer will determine whether to accept the engineered path, or agree to pay Special Construction Charges to have a completely diverse route constructed in those instances where there is not a minimum separation of 10 feet between paths. The customer can also select Equipment Only Protection for an inter-office segment where facilities are not available. This option can be selected for one or both terminating ends. If an equipment failure or fiber cable cut occurs in a segment of the circuit that has this form of protection, the circuit will be switched to the alternate path in 50 milliseconds or less. If a customer desires full path diversity, arrangements must be made for constructing dual entrance facilities into the customer's premise, at the customer's expense.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 11 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

D. Features (cont'd)

2. Optional Features (cont'd)

Equipment Plus Fiber Path Protection (cont’d)

Equipment Plus Fiber Path Protection, with… (cont’d)

Local Channel Path Protection The two fiber pairs of the protected service will be routed diversely to the normal serving wire center. If any location between the fiber paths is closer than 10 feet, the location or locations will be disclosed to the customer. The customer will determine whether to accept the engineered path, or agree to pay Special Construction Charges to have a completely diverse route constructed. This option can be selected for one or both terminating ends. If an equipment failure or fiber cable cut occurs in a segment of the circuit that has this form of protection, the circuit will be switched to the alternate path in 50 milliseconds or less. If a customer desires full path diversity, arrangements must be made for constructing dual entrance facilities into the customer's premise, at the customer's expense.

Inter-Wire Center Path Protection Each fiber pair is routed through different Central Offices between the two serving wire centers, or between the standard serving wire center and an alternate serving wire center. Inter-Wire Center Protection begins at the first manhole out of the Central Office. If only the two serving wire centers are involved, the two fiber pairs will be routed down two fiber paths that are separated by at least 10 feet. If any location between the fiber paths is closer than 10 feet, the location or locations will be disclosed to the customer. The customer will determine whether to accept the engineered path, or agree to pay Special Construction Charges to have a completely diverse route constructed. The customer will receive Equipment Only Protection for an inter-office segment where facilities are not available. If an equipment failure or fiber cable cut occurs on one of the inter-office routes, the circuit will be switched to the alternate path in 50 milliseconds or less. Interoffice mileage will be calculated between the intermediate serving wire centers along the circuit paths of both protected fiber pairs.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 12 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

D. Features (cont'd)

2. Optional Features (cont'd)

Power Protection Power Protection provides customers with battery back-up for up to eight (8) hours to maintain GigaMAN equipment in case of a power failure. Power Protection is provided on a per rack or cabinet basis, and customers in a multi-tenant building will require separate equipment and bays dedicated to each customer. Power Protection is not available for installations using a wall mounted cabinet. Requests for Power Protection are subject to equipment availability and compatibility. Upon receipt of a customer request for Power Protection, the Company will determine the availability, design and engineering requirements for Power Protection, and the appropriate number of service element charges to apply. The addition of Power Protection to existing GigaMAN Service will result in a temporary service interruption.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 13 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

E. Technical References

The customer interface to GigaMAN Service is as specified in:

Subject Technical Reference

Ethernet Standards for the SBC Local Exchange SBC-TP-76412-000 Companies

Network Performance Parameters for Dedicated ANSI T1.503-2002 Digital Services – Definitions and Measurements

The Technical Reference can be obtained from:

APEx Support Team (734) 523-7348

The ANSI publication can be obtained from:

Alliance for Telecommunications Industry Solutions 1200 G. Street, NW Suite 500 Washington, DC 20005

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 14 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

F. Prices

1. Service Elements

Nonrecurring Description /Billing Code/ Charge

Nonrecurring Charges

Administrative Charge/1/ - per service order /ORCMX/ $140.00

Design and Central Office Connection Charge/1/ - per circuit /NRBCL/ 230.00

Customer Connection Charge/1/ - per premises node and wire center terminations /NRBBL/ 755.00

Protection Options Per terminating end - Equipment Only /CPAEX/ 625.00 - Equipment Plus Fiber Path Protection, with… Alternate Wire Center Path Protection /CPAFX/, or 1,400.00 Local Channel Path Protection /CPAGX/ 1,225.00

Per rack or cabinet - Power Protection /VBBGX/ 475.00

Per circuit - Inter-Wire Center Path Protection/2//CPAHX/ 625.00

/1/ Nonrecurring charges will be waived for those customers selecting the 36 or 60 month Term Payment Plan (TPP) period for new service. /2/ Inter-Wire Center Path Protection must be ordered in conjunction with an Equipment Protection option at each end of the circuit.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 15 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description 12 24 36 60 Monthly /Billing Code/ Months Months Months Months Extension

Node Termination - per point of termination /N2TDX/ $3,300.00 $3,100.00 $2,850.00 $2,500.00 $3,800.00

Wire Center Termination - per termination /CTJ/ 125.00 110.00 100.00 50.00 125.00

Channel Mileage - per inter-wire center mile /3LN5S/ 125.00 115.00 100.00 75.00 125.00

Repeater - each /VU4/ 2,400.00 1,700.00 1,150.00 850.00 2,500.00 - each /M1RGX//1/ 2,400.00 N/A 1,150.00 850.00 2,500.00

Diversity Options - Local Channel /CPALX/ 750.00 750.00 750.00 750.00 750.00 - Inter-Wire Center /CPATX/ 500.00 500.00 500.00 500.00 500.00 - Alternate Wire Center /CPAAX/ 1,200.00 1,200.00 1,200.00 1,200.00 1,200.00

/1/ Effective September 24, 2003, service arrangements utilizing a legacy mid-span repeater (/M1RGX/) are grandfathered and no longer available for new customers. Should existing customers utilizing a legacy mid-span repeater disconnect (or relocate one end of) their service, the legacy mid-span repeater will no longer be available. The new equipment platform must be used in those scenarios.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 16 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description 12 24 36 60 Monthly /Billing Code/ Months Months Months Months Extension

Protection Options Per terminating end - Equipment Only /CPAEX/ $1,375.00 $1,225.00 $1,050.00 $900.00 $1,500.00 - Equipment Plus Fiber Path Protection, with… Alternate Wire Center Path Protection /CPAFX/ 2,050.00 1,840.00 1,600.00 1,400.00 2,460.00 Local Channel Path Protection /CPAGX/ 1,825.00 1,650.00 1,425.00 1,225.00 2,190.00

Per rack or cabinet - Power Protection /VBBGX/ 625.00 525.00 480.00 435.00 700.00

Per circuit - Inter-Wire Center Path Protection/1/ /CPAHX/ 375.00 200.00 150.00 100.00 475.00

/1/ Inter-Wire Center Path Protection must be ordered in conjunction with an Equipment Protection option at each end of the circuit.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 17 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

F. Prices

2. Payment Plan

Term Payment Plans GigaMAN Service is only available under the Term Payment Plan (TPP) whereby customers must select either a 12, 24, 36 or 60 month period. After the selected Term Payment Plan period is satisfied, the monthly extension price will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1. Customers re-negotiating an existing term payment plan contract expiring after November 19, 2003 will be required to migrate to the new equipment platform.

Single Payment Option (SPO) A single payment option is available for this service. Refer to Term Payment Plans in Part 15, Section 1 for calculating Single Payment Options.

Deferred Payment Option (DPO) A deferred payment option is not available for this service.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. Refer to Termination Charges in Part 15, Section 1 for calculating Termination Charges.

Effective September 24, 2003, the Company migrated to a new equipment platform in support of GigaMAN Service. As of September 24, 2003, customers who request a conversion from the legacy GigaMAN platform to the new equipment platform will be allowed to do so under the following conditions:

- The customer must issue a disconnect order for their legacy GigaMAN Service and place a service order for GigaMAN Service using the new equipment platform. Termination Charges for the legacy service will be waived. Standard nonrecurring charges to install GigaMAN Service using the new equipment platform will apply.

- The term of the new contract must be equal to or greater than the remaining time left on the legacy GigaMAN contract.

Migration is contingent on availability of fiber from premise to premise. Other Special Construction charges, as necessary, may apply.

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PART 15 - Dedicated Telecommunications Services Original Sheet 18 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

F. Prices (cont'd)

3. Termination Charges (cont'd)

For circuits installed after November 19, 2003, customers will be permitted to move one end of a GigaMAN Service to another location, without incurring Termination Charges, given the following conditions are met:

- The customer must issue a disconnect order for the existing location and place a new service order for GigaMAN Service at the new location. Termination Charges for the existing location will be waived. Standard nonrecurring charges to install GigaMAN Service as a new circuit will apply.

- Negotiated down time will apply, as the new circuit will need to be designed and installed.

- The term of the new contract must be equal to or greater than the remaining time left on the existing GigaMAN contract.

- The existing GigaMAN Service must have been in service for a minimum period of 12 months for a 2-year contract, 15 months for a 3-year contract or 18 months for a 5-year contract. Existing GigaMAN Service with 1-year contracts will not be eligible for this Moves option.

Moves are contingent on availability of fiber from premise to premise. Other Special Construction charges, as necessary, may apply.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 19 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

F. Prices (cont'd)

3. Termination Charges (cont'd)

Customers will be permitted to add Protection Options to existing GigaMAN Service that was installed after November 19, 2003, without incurring Termination Charges, given the following conditions are met:

- The customer must issue a disconnect order for the existing circuit and place a service order for the newly protected circuit. Termination Charges for the existing circuit will be waived. Standard nonrecurring charges to install the newly protected GigaMAN Service will apply. (the conditions described here do not apply to Power Protection added to an existing GigaMAN circuit).

- Negotiated down time will apply, as the new circuit will need to be designed and installed.

- The term of the new contract must be equal to or greater than the remaining time left on the existing GigaMAN contract. (the conditions described here do not apply to Power Protection added to an existing GigaMAN circuit).

- The existing GigaMAN Service must have been in service for a minimum period of 12 months for a 2-year contract, 15 months for a 3-year contract or 18 months for a 5-year contract. Existing GigaMAN Service with 1-year contracts will not be eligible for this option. (the conditions described here do not apply to Power Protection added to an existing GigaMAN circuit).

Addition of Protection Options are contingent on availability of equipment and fiber facilities from premise to premise. Other Special Construction charges, as necessary, may apply.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 20 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

F. Prices (cont’d)

3. Termination Charges (cont’d)

For service installed after July 10, 2007, customers will be permitted to upgrade to a higher- speed service provided by the Company, without incurring Termination Charges, given the following conditions are met:

- an upgrade is considered an increase in speed or capacity when comparing GigaMAN Service to the new service.

- the customer must issue a disconnect order for the existing GigaMAN Service and place a service order for the new, higher-speed service, such that there is no more than 90 days overlap in service.

- the same customer locations must be utilized for the new, higher-speed service.

- the expiration date for the new, higher-speed service is beyond the end of the original TPP term associated with the existing GigaMAN Service.

- the existing GigaMAN Service must have been in service for a minimum period of 12 months for a 24-month contract, 15 months for a 36-month contract or 18 months for a 60-month contract. Existing GigaMAN Service with 12-month contracts will not be eligible for this Upgrade option.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 21 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

F. Prices (cont’d)

4. Credit Allowance

A service is interrupted when it becomes unusable to the customer because of a failure of a facility component used to furnish service under this Guidebook or in the event that the protective controls applied by the Company result in the complete loss of service by the customer. An interruption period starts when an inoperative service is reported to the Company and the Company confirms that continuity has been lost, and ends when the service is operative.

In case of an interruption to service, allowance for the period of interruption, if not due to the negligence of the customer or the customer's end user, shall be as follows: no credit shall be allowed for an interruption of less than 10 seconds. The customer shall be credited for an interruption of 10 seconds or more as follows: the credit shall be at the rate of 10/8640 of the monthly charges for the service for each period of 5 minutes or major fraction thereof that the interruption continues. The credit allowance(s) for service interruptions shall not exceed 100% of the applicable monthly rates.

The Company’s failure to provide or maintain services under this Guidebook shall be excused by force majeure events such as, but not limited to, an earthquake, hurricane, flood, fire, storms, tornadoes, explosion, lightning, power surges or failure, fiber cuts, strikes or labor disputes, acts of war, civil disturbances, acts of civil or military authorities or public enemy, governmental orders, civil commotion, criminal actions taken against the Company, acts of God and other circumstances beyond the Company’s reasonable control.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 22 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

1. GIGAMAN® SERVICE (cont'd)

F. Prices (cont’d)

4. Credit Allowance (cont'd)

Protection Options

A Service Level Agreement (SLA) is offered with fully-protected GigaMAN Service, which provides the customer with a performance commitment that includes a service credit if the service does not perform as described. An SLA of 99.999% Service Availability performance is offered on a GigaMAN circuit with Protection (defined as Equipment Plus Fiber Path Protection for every segment of the circuit). Service Availability will be determined using unavailable seconds as defined in ANSI T1.503-2002 (see Technical References). SLAs are applicable to customers who purchase Equipment Plus Fiber Path Protection with Alternate Wire Center Path Protection or Equipment Plus Fiber Path Protection with Local Channel Path Protection on both ends of a circuit (both local channels), as well as Inter-Wire Center Path Protection, when applicable. If this SLA is not met, or if there is any single event of unavailability of service of 10 seconds or more, the customer will be entitled to a credit equal to 100% of the monthly rate for the circuit. Only one such credit in a billing period will apply. In order to qualify for this credit, the event causing the unavailability must be determined by the Company to be in its network and the failure occurred in that part of the service with Protection. SLA adjustments are not available in the event of a cable cut in any unprotected portion of the GigaMAN Service fiber path or due to customer-requested modifications to the service that may require down time. Routine maintenance is not counted against unavailability. The customer is responsible for notifying the Company when the service parameter within the calendar month falls below the committed level. The customer must request a service credit within 25 calendar days after the end of the month when the unavailability event occurred.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 23 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® SERVICE

A. Description

FibreMAN Service is a dedicated point-to-point service connecting customer's premises. FibreMAN Service is based on the Fibre Channel protocol. FibreMAN Service provides transport of the customer's data between computer devices at a data rate of up to 2 Gbps (two billion bits per second). FibreMAN extends the connectivity between customer premise sites to enable storage connectivity between servers.

FibreMAN provides interconnection functionality which supports concurrent communications among workstations, mainframes, servers, data storage systems, and other peripherals.

FibreMAN will be offered in the metropolitan marketplace as a point-to-point, dedicated service. FibreMAN will provide connectivity between end user customer premise locations, and extends connectivity between customer premise sites to enable access between storage devices.

B. Definitions

Interoffice Channel Mileage (ICM) Defined as the component of the service between serving wire centers, consisting of a fixed charge and a per mile charge.

Local Distribution Channel (LDC) Defined as the channel between the customer’s premises and the serving wire center that normally provides service to that customer’s premise.

Repeater A repeater (circuit regenerator) will be used to extend the transmission of FibreMAN Service. The Company will determine when repeaters are necessary. In addition, the first repeater in a multi- repeater circuit will be used for service alarming and monitoring purposes.

FibreMAN is a registered trademark of AT&T Knowledge Ventures

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PART 15 - Dedicated Telecommunications Services Original Sheet 24 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® SERVICE (cont'd)

C. Terms and Conditions

In addition to regulations set forth elsewhere in this Guidebook, the following regulations apply to FibreMAN Service:

1. The customer provided equipment (CPE) must deliver the data signal for the FibreMAN transport within the industry specification for the subscribed data service. See Paragraph E. - Technical References.

2. FibreMAN provides physical layer transport only. The Company assumes no responsibility for the through transmission of signals generated by the customer’s CPE, for the quality of or defects in such transmission, for the reception of signals by the customer’s CPE, or address signaling to the extent addressing is performed by CPE. Error detection and correction of data generated by the customer’s CPE is the customer's responsibility.

3. FibreMAN is designed to provide connectivity at the discrete bit rate of up to 2 Gbps. The service is considered interrupted when the customer reports to the Company and the Company confirms that continuity has been lost.

4. FibreMAN Service is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction charges may apply.

5. FibreMAN Service is not available in a meet-point billing arrangement involving other Carriers.

6. Interoffice channel mileage is calculated using the V and H coordinate method described in Part 15, Section 1 of this Guidebook.

7. The actual throughput obtained with FibreMAN Service is distance sensitive, based on the Customer Provided Equipment (CPE) provided by the customer. FibreMAN Service will not be offered with guaranteed throughput thresholds since this is determined by the CPE provided by the customer.

8. Repeaters (circuit regenerators) will be located in Company wire centers as required. A monthly charge will be associated with each repeater network element, except for the first repeater in a circuit path (as the first repeater is also used for service alarming and monitoring purposes).

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PART 15 - Dedicated Telecommunications Services Original Sheet 25 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® SERVICE (cont'd)

D. Features

1. Standard Features

All basic service configurations provide full duplex transmission. There is one type of FibreMAN Service configuration: Node-to-Node Service. All Node Terminations connected in a Node-to- Node configuration must be the same type and transmit data at the same speed, i.e., either 1 Gbps or 2 Gbps Ethernet.

Node-To-Node Service

A Node-to-Node configuration connects two customer-designated premises either inter- or intra- wire center.

The following diagram depicts a Node-to-Node configuration connecting two customer-designated premises served from the same wire center.

Node-to-Node Configuration (Intra-Wire Center)

PREMISES SERVING WIRE PREMISES A CENTER B

LDC LDC

LDC = Local Distribution Channel

Applicable service elements are: • Local Distribution Channel (two applicable)

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PART 15 - Dedicated Telecommunications Services Original Sheet 26 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® SERVICE (cont'd)

D. Features (cont'd)

1. Standard Features (cont'd)

Node-To-Node Service (cont'd)

The following diagram depicts a Node-to-Node configuration connecting two customer-designated premises with serving wire centers located "x" miles apart.

Node-to-Node Configuration ("x" miles apart) (Inter-Wire Center)

PREMISES SWC A SWC B PREMISES A B

• LDC LDC • ICM RPTR "x" miles

LDC = Local Distribution Channel ICM = Interoffice Channel Mileage SWC = Serving Wire Center RPTR = Repeater (where required)

Applicable service elements are: • Local Distribution Channel (two applicable) • Interoffice Channel Mileage, Fixed (two applicable) • Interoffice Channel Mileage, Per Mile ("x" applicable) • Repeater (where required)

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PART 15 - Dedicated Telecommunications Services Original Sheet 27 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® Service (cont'd)

D. Features (cont'd)

2. Optional Features

Diversity Options are available where facilities exist. If appropriate facilities do not exist, Special Construction charges may apply. End-to-end diversity can be achieved by coupling Alternate Wire Center Diversity with Inter-Wire Center Diversity, in those instances where each end of a circuit is served out of different serving wire centers.

FibreMAN offers the following diversity options:

Local Channel Diversity Local Channel Diversity provides for a transmission path between a designated customer premise and the standard serving wire center (SWC) that is diverse from the normal/standard transmission path. Local Channel Diversity requires two eligible services purchased by (or for the benefit of) the same customer. The Company will determine which services are eligible based on technical or operational limitations. With this arrangement, one or more local distribution channels will be provisioned over the standard route and one or more local distribution channels will be provisioned over a diverse route. Local Channel Diversity does not provide for full diversity; it only allows for diversity from the splice point closest to the customer’s property line to the SWC. If a customer desires full diversity, arrangements must be made for constructing dual entrance facilities into the customer's premise, at the customer's expense.

Diverse Route

Normal Route

Customer Serving Wire Premise Center

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PART 15 - Dedicated Telecommunications Services Original Sheet 28 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® Service (cont'd)

D. Features (cont'd)

2. Optional Features (cont'd)

Inter-Wire Center Diversity Inter-Wire Center Diversity arrangements presume that each end of a FibreMAN local distribution channel is served out of a different serving wire center (SWC). This arrangement provides a transmission path for FibreMAN local distribution channels between the customer's designated SWC and the serving wire center at the distant end of the circuit, over a transmission path that is separate from the standard transmission path between the two wire centers. Interoffice mileage will be calculated between the intermediate serving wire centers along the circuit path of the diversely routed FibreMAN Service. Inter-Wire Center Diversity requires two eligible services purchased by (or for the benefit of) the same customer. The Company will determine which services are eligible based on technical or operational limitations.

Inter-wire center diversity does not provide for full diversity; it only offers interoffice diversity. If a customer desires full diversity, Alternate Wire Center Diversity must be implemented along with Inter-Wire Center Diversity. Additionally, arrangements must be made for constructing dual entrance facilities at the customer's premise, at the customer's expense.

Intermediate Intermediate SWC SWC

Alternate Route

SWC SWC Customer Customer Premise Normal Route Premise A Z

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PART 15 - Dedicated Telecommunications Services Original Sheet 29 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® Service (cont'd)

D. Features (cont'd)

2. Optional Features (cont'd)

Alternate Wire Center Diversity Alternate Wire Center Diversity is for the local loop only. It provides a local channel transmission path for FibreMAN service between the customer’s designated premises and a wire center that is not the normal (or standard) serving wire center. The Company will choose the alternate wire center closest to the customer’s designated premise that is capable of providing FibreMAN Service over the alternate route. Alternate Wire Center Diversity does not require the purchase of two FibreMAN Services by (or for the benefit of) the same customer, nor does it require the customer to have an existing FibreMAN circuit operating over the normal (or standard) route to the normal (or standard) serving wire center. With this arrangement, one or more local distribution channels will be provisioned over the alternate route. If a customer desires full diversity, arrangements must be made for constructing dual entrance facilities into the customer's premise, at the customer's expense.

Alternate SWC

Alternate Route

Normal Route Customer Serving Wire Premise Center (SWC)

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PART 15 - Dedicated Telecommunications Services Original Sheet 30 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® Service (cont'd)

E. Technical References

FibreMAN standards are defined in American National Standards Institute (ANSI) document X3.230-1994, which is also International Organization for Standardization document 14165-1.

The customer interface to FibreMAN Service is as specified in:

Subject Technical Reference

Ethernet Standards SBC TP-76412-000 Fibre Channel Physical and Signaling Interface ANSI X3.230

The Technical Reference can be obtained from:

APEx Support Team (734) 523-7348

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PART 15 - Dedicated Telecommunications Services Original Sheet 31 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® Service (cont'd)

F. Prices

1. Service Elements

Description /Billing Code/ Nonrecurring Charge

Installation Charge - per channel $1,500.00

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PART 15 - Dedicated Telecommunications Services Original Sheet 32 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® SERVICE (cont'd)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description 12 24 36 60 Monthly /Billing Code/ Months Months Months Months Extension

Local Distribution Channel (LDC) - per channel - 2 Gbps /1D99X/ $5,145.00 $4,200.00 $4,000.00 $3,500.00 $6,174.00 - 1 Gbps /1D98X/ 3,675.00 3,100.00 2,850.00 2,500.00 4,410.00

Interoffice Channel Mileage (ICM) - Fixed, Per End /FL1XX/ 125.00 112.50 100.00 50.00 125.00 - Per Mile /JZ4YS/ 125.00 115.00 100.00 75.00 125.00

Repeater - each /VU4/ 2,400.00 1,700.00 1,150.00 850.00 2,500.00

Diversity Options - Local Channel /DJVYX/ 750.00 750.00 750.00 750.00 750.00 - Inter-Wire Center 500.00 500.00 500.00 500.00 500.00 /DEQYX/

- Alternate Wire 1,200.00 1,200.00 1,200.00 1,200.00 1,200.00 Center /AVOYX/

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PART 15 - Dedicated Telecommunications Services Original Sheet 33 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® Service (cont'd)

F. Prices (cont'd)

2. Payment Plans

Term Payment Plans FibreMAN Service is only available under the Term Payment Plan (TPP) whereby customers must select either a 12, 24, 36 or 60 month period. After the selected Term Payment Plan period is satisfied, the monthly extension price will apply unless a new TPP is selected. Refer to Term Payment Plans in Part 15, Section 1.

Single Payment Option (SPO) A single payment option is available for this service. Refer to Term Payment Plans in Part 15, Section 1 for calculating Single Payment Options.

Deferred Payment Option (DPO) A deferred payment option is not available for this service.

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. Refer to Termination Charges in Part 15, Section 1, for calculating Termination Charges.

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PART 15 - Dedicated Telecommunications Services Original Sheet 34 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® Service (cont'd)

F. Prices (cont'd)

3. Termination Charges (cont'd)

Customers will be permitted to move one end of a FibreMAN Service to another location, without incurring Termination Charges, given the following conditions are met:

- The customer must issue a disconnect order for the existing location and place a new service order for FibreMAN Service at the new location. Termination Charges for the existing location will be waived. Standard nonrecurring charges to install FibreMAN Service as a new circuit will apply.

- Negotiated down time will apply, as the new circuit will need to be designed and installed.

- The term of the new contract must be equal to or greater than the remaining time left on the existing FibreMAN contract.

- The existing FibreMAN Service must have been in service for a minimum period of 12 months for a 2-year contract, 15 months for a 3-year contract or 18 months for a 5-year contract. Existing FibreMAN Service with 1-year contracts will not be eligible for this Moves option.

Moves are contingent on availability of fiber from premise to premise. Other Special Construction charges, as necessary, may apply.

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PART 15 - Dedicated Telecommunications Services Original Sheet 35 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FIBREMAN® SERVICE (cont'd)

F. Prices (cont’d)

3. Termination Charges (cont’d)

For service installed after July 10, 2007, customers will be permitted to upgrade to a higher-speed service provided by the Company, without incurring Termination Charges, given the following conditions are met:

- an upgrade is considered an increase in speed or capacity when comparing FibreMAN Service to the new service.

- the customer must issue a disconnect order for the existing FibreMAN Service and place a service order for the new, higher-speed service, such that there is no more than 90 days overlap in service.

- the same customer locations must be utilized for the new, higher-speed service.

- the expiration date for the new, higher-speed service is beyond the end of the original TPP term associated with the existing FibreMAN Service.

- the existing FibreMAN Service must have been in service for a minimum period of 12 months for a 24-month contract, 15 months for a 36-month contract or 18 months for a 60-month contract. Existing FibreMAN Service with 12-month contracts will not be eligible for this Upgrade option.

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PART 15 - Dedicated Telecommunications Services Original Sheet 36 SECTION 4 - Digital Metropolitan Area Network (MAN) Services

2. FibreMAN® Service (cont'd)

F. Prices (cont’d)

4. Credit Allowance

A service is interrupted when it becomes unusable to the customer because of a failure of a facility component used to furnish service under this Guidebook or in the event that the protective controls applied by the Company result in the complete loss of service by the customer. An interruption period starts when an inoperative service is reported to the Company and the Company confirms that continuity has been lost, and ends when the service is operative.

In case of an interruption to service, allowance for the period of interruption, if not due to the negligence of the customer or the customer's end user, shall be as follows: no credit shall be allowed for an interruption of less than 10 seconds. The customer shall be credited for an interruption of 10 seconds or more as follows: the credit shall be at the rate of 10/8640 of the monthly charges for the service for each period of 5 minutes or major fraction thereof that the interruption continues. The credit allowance(s) for service interruptions shall not exceed 100% of the applicable monthly rates.

The Company’s failure to provide or maintain services under this Guidebook shall be excused by force majeure events such as, but not limited to, an earthquake, hurricane, flood, fire, storms, tornadoes, explosion, lightning, power surges or failure, fiber cuts, strikes or labor disputes, acts of war, civil disturbances, acts of civil or military authorities or public enemy, governmental orders, civil commotion, criminal actions taken against the Company, acts of God and other circumstances beyond the Company’s reasonable control.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 1 SECTION 5 - Other Dedicated Telecommunications / Private Line Services

1. SERIES 10000 CHANNELS

A. Types and Description

Series 10000 Channels are furnished by the Company for the purpose of extending customer- provided communications systems to a premise of the customer or to Centrex Control Switching Equipment serving the premises of the customer for use at such premises. Channels are furnished for half-duplex or duplex operation on a two-point basis for service 7 days per week, 24 hours per day, for a minimum period of one month.

Type 10001 - Approximate bandwidth of 300-3000 Hertz. Furnished, to the extent permitted by the normal transmission characteristics of this grade of channel, for types of transmission similar to those set forth for Series 1000, 2000 and 3000 channels.

B. Regulations

In addition to the regulations set forth in Section 1 proceeding, the following regulations apply to Series 10000 channels as specified below.

Type 10001 - The customer's premises must be located 25 airline miles or less from the point at which the customer-provided communication channel is connected to the Company entrance facility.

C. Rates - Monthly Service

Type 10001 Channels

Entrance facilities will be furnished at rates and charges based upon costs incurred.

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PART 15 - Dedicated Telecommunications Services Original Sheet 2 SECTION 5 - Other Dedicated Telecommunications / Private Line Services

2. SIGNALING ARRANGEMENTS

Monthly Nonrecurring Termination Rate Charge Liability USOC A. Automatic ringing

One-way or two-way single ring arrangement where two point interexchange service terminates in a telephone, private branch exchange system, key equipment or key telephone system, per station equipped $16.15 $39.20 - 27M

B. Automatic signaling

1. Automatic signaling line equipment, per local service area channel 8.20 - - 47R

2. Where two point interexchange service is arranged for automatic intermittent signaling, two-way automatic signaling, per service point arranged 41.55 - - 27L

C. Dial signaling

Arrangement to permit direct dialing between stations suitably equipped to transmit dial signals on two-point inter- exchange service when one termination is a PBX or similar system, Centrex system, key telephone system, key equipment and the other termination is either such equipment or a dial telephone, each service point so arranged 35.75 - - 27EKE

D. Key selective signaling

1. Initial station code 39.20 - $714.10 BYM

2. Additional station code on same continuous property as an initial code 15.85 - 406.10 BNM

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 15 - Dedicated Telecommunications Services Original Sheet 3 SECTION 5 - Other Dedicated Telecommunications / Private Line Services

2. SIGNALING ARRANGEMENTS (cont’d)

E. The following signaling arrangements are furnished for registered and grandfathered PBX (or similar) systems in accordance with Part 68 of the Federal Communications Commission's Rules and Regulations:

Monthly Nonrecurring Rate Charge USOC

1. Signaling arrangements, interexchange or intraexchange

Type A $34.05 - SAL Type B 23.65 - SAU Type C 4.20 - SAY

2. Tie line signaling arrangement 15.00 - SLM

3. Voice Connecting Arrangement

Arrangement to connect voice communication system to a private line with dial or automatic signaling, terminating in a PBX or Centrex system, each 8.20 $10.75 CDQ

4. Arrangement to transfer a 100 Series DATA-PHONE data set

Arrangement to transfer a l00 Series DATA-PHONE data set between an exchange line, with the exception of a two party line, and a line used with Western Union TWX Service, when such DATA-PHONE data set is associated with Company-provided teletypewriter equipment 13.25 81.90 D66

This arrangement is provided on a manual basis for outgoing service and on an automatic basis for incoming service. Nonrecurring Charge USOC 5. Simulated Direct Current (DC) Arrangement

Arrangement to emulate direct current (DC) capability, where necessary, per channel $1,603.00 DUT

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 17 - ISDN Services Original Sheet 15 SECTION 1 - ISDN Basic Rate Interface (BRI)

1. ISDN DIRECT (cont’d)

E. Rates and Charges (cont’d)

2. Service Elements and Optional Features (cont'd)

Variable Term Option Monthly Rates Nonrecurring Description /Billing Code/ Charge 1 Month 36 Month 60 Month

g. Subsequent changes for Circuit Switched Voice and/or Circuit Switched Data rearrangement to add line appearance or move line or feature appearances, per occasion /REA1B/ $15.00 - - -

h. Additional Call offering, each /NCO/ 5.00 $ 2.50 - -

i. Additional Multiple Call Appearances, each /ACSPB/ 5.00 2.00 - -

j. Intercom Calling, Each /NZV/ 5.00 2.50 /1/ /1/

k. Secondary Telephone Numbers, including call appearance, each /D06/ 5.00 2.00 /1/ /1/

l. Station Controlled Conference 6 port /EQ6/ 15.00 14.00 - -

m. Message Waiting Indicator each /MLN/ 5.00 2.50 - -

n. Flat Rate Usage (Business) /UXG1X/ - 35.00 - -

/1/ Term Payment Plan (TPP) rates are no longer available for this Rate Element as of September 1, 2004. TPPs in existence prior to September 1, 2004 are rate protected as per Paragraph 1.C.1 in this Section, through the end of the existing TPP term.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 18 - Video Services Original Sheet 1 SECTION 1 - Advanced Video Service

1. ADVANCED VIDEO SERVICE

A. Description

Advanced Video Service provides for the intrastate, intraLATA transmission of a National Television System Committee - USA (NTSC) color video and stereo audio signal from a customer location to a video switch port where it can be connected to other customer-specified locations.

It is capable of operating in the following modes:

• Point-to-point broadcast (one-way) • Point-to-point interactive (two-way) • Multipoint broadcast (one-to-many) • Interactive mode with continuous viewing capability for up to four participants

This service gives a customer-designated system administrator remote access ability to initiate and terminate switched transmission via a Company-provided scheduling and reservation system. The multipoint interactive mode allows participating locations to operate in the following modes of operation:

• Conference Control (Conference leader determines who everyone will see) • Continuous presence at all locations (up to four sites)

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 18 - Video Services Original Sheet 2 SECTION 1 - Advanced Video Service

1. ADVANCED VIDEO SERVICE (cont’d)

B. Terms and Conditions

1. Commercial Customers

The monthly price consists of two elements: a monthly fixed price which includes eighty hours of usage and a variable price for usage above eighty hours. The monthly variable price components are computed by adding all usage occurrences in fifteen-minute increments and rounding the total up to the next hour, then applying the variable hours sum (over eighty hours) to the price per hour-of-use matrix.

Educational Institutions

Educational institutions may subscribe to AVS upon the terms and conditions following. Educational institutions as used herein is limited to those institutions which are chartered by the State Board of Education pursuant to Section 3301.16, Revised Code, as well as, two-year and four-year colleges and universities accredited by the State Board of Regents.

The billing customer of record determines eligibility for the educational institution price, not the physical location of the AVS line termination.

Educational institutions can choose either one of two optional price plans as described below. The billing customer of record cannot mix Option A and Option B.

2. Hourly usage charges apply to each port participating on a call and are billed to the customer of record for that port. Other billing arrangements may be available where facilities permit.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 18 - Video Services Original Sheet 3 SECTION 1 - Advanced Video Service

1. ADVANCED VIDEO SERVICE (cont’d)

B. Terms and Conditions (cont’d)

3. When an Advanced Video Service (AVS) customer of record has more than one port on the same bill, monthly usage will be averaged over all ports. The total monthly hourly usage on all ports will be divided by the number of ports to calculate the hourly usage billing per line.

4. AVS is offered only from central offices where facilities permit, and Special Construction Charges may apply.

C. Technical References

Technical specifications for this service may be found in the technical publication referenced below.

Subject Technical Reference

Ameritech Advanced Video Service AM TR-NIS-000128 Interface Specifications

The Technical Reference can be obtained from:

APEX Support Team (734) 523-7348

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 18 - Video Services Original Sheet 4 SECTION 1 - Advanced Video Service

1. ADVANCED VIDEO SERVICE (cont’d)

D. Prices

Educational Institutions

Option A

The monthly price consists of two elements: a monthly fixed price which includes eighty hours of usage and a variable price for usage above eighty hours. The monthly variable price component is computed by adding all usage occurrences in fifteen-minute increments over eighty hours and rounding the total up to the next hour, then applying the variable hours sum (over eighty hours) to the price per hour-of-use matrix.

Option B

• The monthly price consists of two elements: a monthly fixed price and a variable price for all hourly usage. The monthly usage bill will be computed by adding all usage occurrences in fifteen-minute increments and rounding the total up to the next hour, then applying the total hours to the price per hour-of-use matrix.

• Billing from fixed and hourly usage must total a minimum amount that is determined by the contract length. If the billing does not meet $23,760 for a twelve month contract, or an average of $19,680 per year for a sixty or thirty-six month contract, the differential amount will be billed at the end of the contract period.

• Customers may move from Option B to Option A at any point once the customer has met the minimum revenue commitment described above.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 18 - Video Services Original Sheet 5 SECTION 1 - Advanced Video Service

1. ADVANCED VIDEO SERVICE (cont’d)

D. Prices (cont’d)

1. Service Elements

Monthly Payment Term Payment Plans Nonrecurring 36 60 84 Description Charge Month Month Month Commercial Customers

Nonrecurring Charge, per port $1,300.00

First 80 hours of use, per port $2,660.00 $2,420.00 $2,200.00

For hours 81 - 200, per hour of use, per port 15.00 15.00 15.00

For hours 201 or more, per hour of use, per port 10.00 10.00 10.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 18 - Video Services Original Sheet 6 SECTION 1 - Advanced Video Service

1. ADVANCED VIDEO SERVICE (cont’d)

D. Prices (cont’d)

1. Service Elements (cont’d)

Monthly Payment Term Payment Plans Nonrecurring 12 36 60 Description Charge Month Month Month

Educational Institutions

Nonrecurring Charge, per port Option A $1,000.00

Option A First 80 hours of use, per port $1,640.00 $1,640.00 $1,640.00 For hours 81 - 200, per hour of use, per port 10.00 10.00 10.00 For hours 201 or more, per hour of use, per port 2.00 2.00 2.00

Option B Fixed price, per port 780.00 440.00 440.00

Monthly price, per hour of use, per port

Hours 1 - 20 25.00 25.00 25.00 21 - 40 15.00 15.00 15.00 41 - 200 10.00 10.00 10.00 201 or greater 5.00 5.00 5.00

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 18 - Video Services Original Sheet 7 SECTION 1 - Advanced Video Service

1. ADVANCED VIDEO SERVICE (cont’d)

D. Prices (cont’d)

2. Payment Plans

• Term Payment Plans The minimum service period is twelve months. Optional contract periods of thirty-six months and sixty months are available.

• Single Payment Option (SPO) The monthly recurring fixed price per port may be prepaid for periods of twelve, thirty-six or sixty months. The prepayment charges in no way constitute a purchase and the Company retains ownership of all equipment covered by prepayment. The following conditions apply:

• Customers who prepay will have an allowance applied. The prepayment will be calculated using the loan amortization method at the annual rate specified in Part 2, Section 3. The allowance will be based on the number of months of the prepayment period. The prepayment amount (principle) is the total outstanding recurring charges less the payment allowance. • Monthly recurring prices per hour of use (if applicable) will continue to apply per the contract option chosen. • Customers who change the length of a payment period will be credited any unused portion of the prepayment amount. • Customers who prematurely disconnect the service will have termination charges deducted from the prepayment amount and any balances credited to their bill.

3. Termination Charges

Termination liability will apply to AVS ports that are disconnected prior to the expiration of the contracted service period. The charge is fifty percent of the remaining fixed monthly recurring charges or any minimum billing guarantees that would have been incurred by the customer if the service had been in service for the contract period. If a video port has been in service for more than the contract period, no termination charges apply.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 1 SECTION 15 - Dedicated Telecommunications / Private Line Services

1. RESTORATION PRIORITY CHARGE

Upon receipt of certification in conformance with Part 64, Subpart D, Appendix A of the Federal Communications Commission's Rules and Regulations which specifies the priority system for restoration of private line service, the Company will change the priority designation of a private line service. A restoration priority change charge in an amount equal to the charge specified in Part 15, Section 1, applies when the customer requests a change in the restoration priority after the service has been established or after the service has been ordered but prior to start of service. No charge applies when the restoration priority certification is provided with the order to establish the service.

Effective September 10, 1990 no further requests for Restoration Priority (RP) Service will be accepted by the Company. Existing RP customers will be converted to the Telecommunications Service Priority (TSP) System subject to the provisions set forth in 2.6.11 preceding.

RP service will expire on March 10, 1993, or when all services are converted to TSP, whichever is sooner.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 2 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS

2.1 Classification and Rates

2.1.1 Basic Digital Service (BDS)

Effective March 16, 1992, no further requests for, or rearrangements of Basic Digital Service will be accepted by the Company. Existing customers who will not experience any increase in rate will be converted to Base Rate Service at no charge. For those customers Base Rate Service rates will apply. Customers who would experience a rate increase will continue to subscribe to Basic Digital Service.

A. Types and Description

Basic Digital Service (BDS) provides for the four-wire simultaneous two way transmission of digital signals at synchronous speeds of 2.4, 4.8, 9.6 or 56 Kilobits per second (Kbps).

BDS is used to connect two customer premises for digital communication between such premises, or a customer premise and central office.

B. Regulations

In addition to the regulations set forth in Part 15, Section 2, the following regulations apply to BDS.

1. The regulations specified herein are in addition to the applicable regulations specified in this Guidebook and other tariffs of this Company, except as modified in the following paragraphs:

a. Termination Charges

(1) When service is terminated by the customer, or by the Company for any reason for which it may terminate such service under the provisions of this Guidebook, prior to the expiration of the initial contract period, the following termination charges apply in addition to all charges due for the service which has been furnished:

(a) Contract Period of One Month

In the case of services for which the initial contract period is one month, the termination charge will be charges due for the unexpired portion of the one month period.

(b) Change Speed of Service

In the case of a change of speed from or to 2.4, 4.8 and 9.6 Kbps, termination charges do not apply. A change from 56 Kbps to 2.4, 4.8, 9.6 or vice versa constitutes a termination of contract and termination charges as specified in (a) preceding, will apply.

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PART 20 - Grandfathered Services Original Sheet 3 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (cont'd)

2.1 Classification and Rates (cont'd)

2.1.1 Basic Digital Service (BDS) (cont’d)

B. Regulations (cont’d)

1. (cont’d)

a. (cont’d)

(1) (cont’d)

(c) The total amount of the nonrecurring charges may be deferred. The minimum amount that may be deferred is $1200.00. The deferred payment period must be equal to the customers VTPP payment period.

(d) Termination charges apply to all changes in the serving address of the service.

2. Availability of Service

a. BDS is available on a 24 hour per day, seven days a week basis.

b. BDS can only be provided from central offices equipped with suitable digital facilities and equipment. Where special construction of facilities is necessary, such construction will be provided at the charges specified in Part 2, Section 5 .

c. All signals generated by customer terminating equipment must meet signal and format constraints contained in Ameritech Technical Reference AM-TR-NPL-000007.

d. Suspension of service is not provided on BDS.

3. Minimum Service Period

The minimum service period is one month.

4. Channel Interface (CIs)

CIs are required for customer-provided premises equipment. The following CIs define the bit rates that are available for BDS.

CI Bit Rate DU-24 2.4 Kbps DU-48 4.8 Kbps DU-96 9.6 Kbps DU-56 56.0 Kbps

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 4 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (cont'd)

2.1 Classification and Rates (cont'd)

2.1.1 Basic Digital Service (BDS) (cont’d)

C. Rates

The following rates and charges apply for BDS service in addition to the rates and charges for the associated service.

1. One channel termination is applicable to each station connected.

2. Channel mileage is portrayed in mileage bands. There are two rates that apply for each band, i.e., a flat rate per band and a rate per mile.

3. Channel Termination

USOC Nonrecurring Charge Monthly Rate

1DCPX 2.4 kbps $299.11 $59.00 1DCPX 4.8 kbps 299.11 59.00 1DCPX 9.6 kbps 299.11 59.00 1DCPX 56 kbps 398.81 95.00

4. Channel Mileage

(a) 2.4 kbps

Monthly Rates USOC Mileage Bands Fixed Per Mile

XUQ1X 0 $21.00/1/ None 1LNPB 0 to 4 21.00 $2.65 5 to 8 21.00 2.65 9 to 25 21.00 2.65 26 to 50 21.00 2.65 51 and over 21.00 2.65

/1/ The fixed mileage rate does not apply to zero (0) mileage band channels connected to High Capacity Transport Service.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 5 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (cont’d)

2.1 Classification and Rates (Cont'd)

2.1.1 Basic Digital Service (BDS) (Cont’d)

C. Rates (Cont’d)

4. Channel Mileage (Cont’d)

(b) 4.8 kbps

Monthly Rates USOC Mileage Bands Fixed Per Mile

XUQ2X 0 $21.00/1/ None 1LNPC 0 to 4 21.00 $2.65 5 to 8 21.00 2.65 9 to 25 21.00 2.65 26 to 50 21.00 2.65 51 and over 21.00 2.65

(c) 9.6 kbps Mileage Bands

XUQ3X 0 21.00/1/ None 1LNP9 0 to 4 21.00 2.65 5 to 8 21.00 2.65 9 to 25 21.00 2.65 26 to 50 21.00 2.65 51 and over 21.00 2.65

(d) 56 kbps Mileage Bands

XUQ4X 0 44.00/1/ None 1LNPD 0 to 4 44.00 5.25 5 to 8 44.00 5.25 9 to 25 44.00 5.25 26 to 50 44.00 5.25 51 and over 44.00 5.25

/1/ The fixed mileage rate does not apply to zero (0) mileage band channels connected to High Capacity Transport Service.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 6 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (Cont'd)

2.2 High Capacity Transport Service

Effective March 16, 1992, no further requests for Direct High Capacity Service will be accepted by the Company. Existing customers who will not experience any increase in rate will be converted to DS1 Service at no charge. For those customers DS1 Service rates will apply. Customers who would experience a rate increase will continue to subscribe to Direct High Capacity Service.

A. General

1. High Capacity Transport Service consists of two-point digital channels and equipment which provides for simultaneous two-way isochronous transmission at a speed of 1.544 Megabits per second (Mbps). High Capacity Transport Service may be used to connect:

a. two customer premises

b. a customer premises and the central office

c. between central offices for access between Centrex Services.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 7 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (Cont'd)

2.2 High Capacity Transport Service (Cont’d)

B. Regulations

1. The regulations specified herein are in addition to the applicable regulations specified in this Guidebook and other tariffs of this Company.

2. High Capacity Transport Service is offered under the Variable Term Payment Plan (VTPP) as specified in Part 2, Section 3. All conditions and regulations pertaining to the VTPP are included in Part 2, Section 3, except as modified in the following paragraphs:

a. Termination Charges

(1) When service is terminated by the customer, or by the Company for any reason for which it may terminate such service under the provisions of this Guidebook, prior to the expiration of the initial contract period, the following termination charges apply in addition to all charges due for the service which has been furnished:

(a) Contract Period of One Month

In the case of services for which the initial contract period is one month, the termination charges will be charges due for the unexpired portion of a twelve month period.

(b) Contract Periods of Three or Five Years

In the case of services for which the initial contract period is three or five years, the termination charges will be an amount equal to fifty per cent of the charges for the unexpired portion of such initial contract period, at the rate in effect at the time the service is discontinued.

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PART 20 - Grandfathered Services Original Sheet 8 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (Cont'd)

2.2 High Capacity Transport Service (Cont’d)

B. Regulations (Cont’d)

3. Availability of Service

a. High Capacity Transport Service can only be provided from central offices equipped for appropriate digital transmission.

b. High Capacity Transport Service is available on channels confined to the same building or continuous property on a cost incurred basis.

4. Provision of Service

a. High Capacity Transport Service is available only on a two-point basis.

b. Performance Criteria

(1) High Capacity Transport Service is designed to provide an average performance of at least 95% error-free seconds of transmission measured over a continuous 24 hour period.

5. Customer Signal Parameters

All signals generated by customer terminal equipment must meet the signal and format constraints described in Bell System Technical Reference Publication 43801 dated November, 1982, Bell System Technical Reference Publication 41451 dated January, 1983 and in Bell System Technical Reference Publication 62411 dated September, 1983.

C. Service Functions

1. Channelization

a. Channelization equipment will be provided by the Company at the central office. If the customer wants the channelization equipment located on his premises, the equipment must be provided by the customer.

b. The Company will provide channelization equipment at the central office when the customer desires two-point, premises to central office or central office to central office services.

c. Company provided central office channelization equipment provides service for up to 24 voice grade channels.

2. Channel Plug-Ins

One channel plug-in is required for each channel termination in the channelization equipment.

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PART 20 - Grandfathered Services Original Sheet 9 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (cont’d)

2.2 High Capacity Transport Service (Cont’d)

D. Rates and Charges

The following rates and charges apply for High Capacity Transport Service in addition to the rates and charges for the associated service.

1. Local channel USOC

a. First mile or fraction thereof 1LDPX

Installation charge $960.25 Variable term option monthly rate - 1 month 260.30 - 36 months 251.00 - 60 months 241.80

b. Each additional mile or fraction thereof 1LDPB

Installation charge $233.75 Variable term option monthly rate - 1 month 79.50 - 36 months 76.60 - 60 months 73.80

2. Additional channel

Additional local channel rates and charges apply to the installation of each additional local channel furnished on the same occasion as the local channel, to the same customer to the same location, i.e., originating and terminating.

a. First mile or fraction thereof 1LDP2

Installation charge $960.25 Variable term option monthly rate - 1 month 158.35 - 36 months 153.85 - 60 months 149.30

b. Each additional mile or fraction thereof 1LDP4 Installation charge $233.75 Variable term option monthly rate - 1 month 33.05 - 36 months 32.10 - 60 months 31.20

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 10 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (cont’d)

2.2 High Capacity Transport Service (cont’d)

D. Rates and Charges (cont'd)

3. Interoffice Mileage USOC

a. First mile or fraction thereof 1LNPX

Installation charge - Variable term option monthly rate - 1 month $80.40 - 36 months 77.60 - 60 months 74.70

b. Each additional mile or fraction thereof 1LNPR

Installation charge - Variable term option monthly rate - 1 month $50.50 - 36 months 49.10 - 60 months 47.65

4. Channelization Equipment VBD24

a. Basic equipment to derive up to 24 Voice grade channels per 1.544 line

Installation charge - Variable term option monthly rate - 1 month $266.05 - 36 months 258.50 - 60 months 250.85

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 11 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (cont’d)

2.2 High Capacity Transport Service (cont’d)

D. Rates and Charges (cont'd) USOC

4. Channelization Equipment (cont’d)

b. Channel plug-ins

(1) Voice plug-in, per location

Two-wire VV2 Installation charge - Variable term option monthly rate - 1 month $6.40 - 36 months 6.25 - 60 months 6.05

Two-wire - off premise station VOM

Installation charge - Variable term option monthly rate - 1 month $6.35 - 36 months 6.20 - 60 months 6.00

Four-wire with no signaling or with E & M signaling VV4

Installation charge - Variable term option monthly rate - 1 month $4.45 - 36 months 4.30 - 60 months 4.20

Four-wire with SF signaling VV4SF

Installation charge - Variable term option monthly rate - 1 month $12.40 - 36 months 12.10 - 60 months 11.75

Four-wire with signaling VV4DT

Installation charge - Variable term option monthly rate - 1 month $11.15 - 36 months 10.85 - 60 months 10.50

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 12 SECTION 15 - Dedicated Telecommunications / Private Line Services

2. CHANNELS (cont’d)

2.2 High Capacity Transport Service (cont’d)

D. Rates and Charges (Cont'd) USOC

4. Channelization Equipment (Cont’d)

b. Channel plug-ins (Cont’d)

(2) Analog Data Plug-in, per location

Four-wire VDZ Installation charge - Variable term option monthly rate - 1 month $7.00 - 36 months 6.80 - 60 months 6.60

Four-wire connect through CQV

Installation charge - Variable term option monthly rate - 1 month $4.70 - 36 months 4.55 - 60 months 4.45

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 13 SECTION 15 - Dedicated Telecommunications / Private Line Services

3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/

A. Description

FDDI Service is a high speed fiber optic data transmission service operating at a data rate of 100 megabits per second. The service will be provided to customers with two or more designated premises on an intra-or inter-wire center basis within a LATA. This service can be used to connect customer locations in a point-to-point or multi-point configuration.

FDDI Service is designed to provide a high bandwidth, general purpose interconnection between computers and peripheral equipment, including the interconnection of Local Area Networks (LANs) and other networks. It also can be used to extend campus data networks to off-site locations. Typical applications are transferring large files between data bases and providing access to high speed printers and graphics/CAD/CAM programs.

Customer interface to the FDDI Service network termination point is a single mode to multimode fiber interface, at the customer location.

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 14 SECTION 15 - Dedicated Telecommunications / Private Line Services

3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/ (cont'd)

B. Definitions

Channel Mileage Provides for the digital transmission facilities between serving wire centers within the network and their respective wire center node termination.

Premises Node Termination Provides for the termination of digital transmission facilities on a customer’s designated premises node. Included as part of the premises node termination is a standard channel interface arrangement which defines the technical characteristics associated with the service.

Central Office Regenerator When a signal regenerator is required it must be provided at one of the Company’s wire centers.

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

ATT TN OH-08-18004 Effective: April 1, 2008 AT&T OHIO GUIDEBOOK

PART 20 - Grandfathered Services Original Sheet 15 SECTION 15 - Dedicated Telecommunications / Private Line Services

3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/ (cont’d)

C. Terms and Conditions

In addition to regulations set forth elsewhere in this Guidebook, the following regulations apply to Fiber Distributed Data Interface (FDDI) Service:

1. A customer-provided optical interface will not be allowed. All customer-provided equipment must deliver the data signal for FDDI Service within industry specifications for the subscribed data service.

2. FDDI Service provides physical layer transport only. Error detection and correction of transported data is the customer’s responsibility. The Company shall not be responsible for the through transmission of signals generated by CPE or for the quality of or defects in such transmission, the reception of signals by CPE, or address signaling to the extent addressing is performed by the CPE.

3. FDDI Service is provided at the option of the Company where facilities permit. If appropriate facilities are not available, Special Construction charges may apply.

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

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PART 20 - Grandfathered Services Original Sheet 16 SECTION 15 - Dedicated Telecommunications / Private Line Services

3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/ (cont’d)

D. Features

1. Optional Features

Uninterruptible Power Supply (UPS) Provides for a battery backup power source, per node termination equipped, in the event that normally provided utility power is lost.

Second Power Supply Provides for a second power supply to be installed, per node termination. This power supply insures that if the primary power supply fails, the node termination will continue to operate. If requested, a second power supply must be applied to every node termination on the network.

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

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3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/ (cont’d)

E. Technical References

Technical specifications for FDDI Service are found in:

Subject Technical Reference

Ameritech OPTINET 100 Mbps (FDDI) Interface AM TR-NIS-000077 Specifications

The Technical Reference can be obtained from: APEX Support Team (734) 523-7348

For technical information pertaining to the customer interface, see American National Standards Institute (ANSI) document X3.166 (1990).

All signals generated by customer terminal equipment must meet the ANSI FDDI X3T9.5 interface specifications.

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

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3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/ (cont’d)

F. Prices

1. Service Elements

Nonrecurring Description /Billing Code/ Charge

Administrative Charge, per service order /ORCMX/ $ 140.00

Design and Central Office Connection Charge, per network /NRBCL/ 230.00

Customer Connection Charge, per premises and wire center node terminations /NRBBL/ 755.00

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

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3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/ (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 36 60 84 Description /Billing Code/ Months Months Months

Central Office Regenerator, per regenerator /CTJ/ $1,400.00 $1,100.00 $ 900.00 - Monthly Extension Rate 1,680.00 1,320.00 1,080.00

Premises Node Termination, per customer premises node /N2TDX/ 1,400.00 1,100.00 900.00 - Monthly Extension Rate 1,680.00 1,320.00 1,080.00

Channel Mileage, per inter-wire center mile /3LN6S/ 140.00 100.00 80.00 - Monthly Extension Rate 168.00 120.00 96.00

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

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3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/ (cont’d)

F. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 36 60 84 Description /Billing Code/ Months Months Months

Optional Features and Functions

Uninterruptable Power Supply (UPS), per node termination /UPW/ $125.00 $110.00 $100.00 - Monthly Extension Rate 150.00 132.00 120.00

Second Power Supply (UPS), per node termination /2PS/ 50.00 40.00 30.00 - Monthly Extension Rate 60.00 48.00 36.00

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

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3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/ (cont’d)

F. Prices (cont'd)

2. Payment Plans

• Term Payment Plans Fiber Distributed Data Interface (FDDI) Service is only available under the Term Payment Plan (TPP) whereby customers must select either a 36, 60 or 84 month period. After the selected Term Payment Plan period is satisfied:

For service ordered prior to October 4, 1999 the prevailing prices of the current plan will continue until the customer cancels or renews the service.

For service ordered after October 4, 1999 the Monthly Extension rate will apply unless a new TPP is selected.

Refer to Term Payment Plans in Part 15, Section 1.

• Single Payment Option (SPO) A single payment option is available for this service. Refer to Term Payment Plans in Part 15, Section 1 for calculating Single Payment Options.

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

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3. FIBER DISTRIBUTED DATA INTERFACE (FDDI) SERVICE/1/ (cont’d)

F. Prices (cont'd)

3. Termination Charges

Termination Charges will apply to service terminated prior to the contracted period. Refer to Termination Charges in Part 15, Section 1 for calculating Termination Charges.

4. Credit Allowance

A credit allowance will be given for interruptions of service. Refer to Credit Allowance in Part 15, Section 1 for calculating Credit Allowances.

/1/ Effective February 16, 2001, Fiber Distributed Data Interface (FDDI) Service is limited to customers with existing service. No new customers will be able to order FDDI. Existing customers will be able to modify their existing service and will be able to add new FDDI circuits to their networks. New installations for existing customers will be able to utilize the Term Payment Plan (TPP), but no plan may be ordered with a termination date beyond February 15, 2008. Customer TPPs that expire prior to February 15, 2008 may extend their service until February 15, 2008 utilizing the Monthly Extension Rate provision of the TPP. Current customers will be permitted to keep their service until February 15, 2008, at which time the service will be discontinued.

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PART 20 - Grandfathered Services Original Sheet 23 SECTION 15 - Dedicated Telecommunications / Private Line Services

4. DATAPHONE ® SELECT-A-STATION SERVICE /1/

A. Regulations

1. Dataphone Select-a-Station Service is a multistation, voice grade; private line data system designed to establish point-to-point connections rapidly between a master station and a number of remote stations, one at a time. Direct transmission between remote stations is not possible, nor is simultaneous communications from the master to more than one remote station possible.

2. A Primary Data Station Selector (PDSS) provides the connection between the master station and any one of up to 128 half or full duplex voice grade data channels. Where more than one Data Station Selector (DSS) is required, additional DSS’s, designated Secondary Data Station Selectors (SDSS) connected to the PDSS, may be provided.

3. A Selector Control Unit (SCU) is required at the master station location. The SCU must be provided by the customer to transmit control signals to the DSS’s and to receive supervisory signals from DSS’s.

®Registered Trademark of American Telephone and Telegraph Company.

/1/ Effective July 19, 2002, DSAS will no longer be available to new customers. Existing customers may retain service at existing locations until December 1, 2002, when the service will be completely discontinued.

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4. DATAPHONE ® SELECT-A-STATION SERVICE (cont’d) /1/

A. Regulations (cont’d)

4. Dataphone Select-A-Station Service may be arranged for the sequential mode of operation. The customer must specify one of the following three DSS options which establishes the order of connections from the DSS to the remote stations and provides the appropriate circuit structure.

a. Automatic Step* - The duration and order of connection are fixed.

b. Automatic Step with Reset* - The duration and order of connection are fixed, but the DSS will reset to the beginning of the connection cycle upon command from the master station.

c. Controlled Step - Allows the customer to have in-service control over the duration of the connection. However, the order of the connection is fixed.

* Cannot be connected to a SDSS.

5. Dataphone Select-A-Station may also be arranged for addressable operation. This operation provides a DSS arrangement in which the customer controls the duration and order of connections.

6. Type 3040 and 3041 channels, furnished under the provisions of this Guidebook are used to provide access:

a. From the PDSS to the SCU. b. From the DSS to each remote station. c. From the PDSS to each SDSS.

Note: (a) and (c) above must be four-wire channels

7. The access channels in 6.a., b., and c. preceding will be priced as individual two point channels, based on locations connected.

/1/ Effective July 19, 2002, DSAS will no longer be available to new customers. Existing customers may retain service at existing locations until December 1, 2002, when the service will be completely discontinued.

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4. DATAPHONE ® SELECT-A-STATION SERVICE (cont’d) /1/

B. Rates and Charges

Monthly Nonrecurring Rate Charge USOC

1. Primary Data Station Selector (PDSS)

a. Common equipment

(1) Sequential operation $201.90 $320.70 DSGAS (2) Addressable operation 276.90 922.90 D7S

b. Per two-wire channel connected 5.25 - DSK

c. Per four-wire channel connected 25.95 - DSP

d. When a four-wire channel is used to connect a Primary DSS to a Secondary DSS or to a Remote Station, the rate and charge in c. preceding applies at the Primary DSS only.

2. Secondary Data Station Selector (SDSS)

a. Common equipment

(1) Sequential operation See 1.a(1) preceding (2) Addressable operation See 1.a(2) preceding

b. Per two-wire channel connected See 1.b. preceding

c. Per four-wire channel connected See 1.c preceding

d. When a channel is used to connect a Secondary DSS to a Remote Station, the rate and charge in c. preceding applies at the Secondary DSS only.

3. Access Lines See Type 3040 and 3041 Channels

/1/ Effective July 19, 2002, DSAS will no longer be available to new customers. Existing customers may retain service at existing locations until December 1, 2002, when the service will be completely discontinued.

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PART 20 - Grandfathered Services Original Sheet 26 SECTION 15 - Dedicated Telecommunications / Private Line Services

5. BASIC DIGITAL SERVICE (BDS)

Effective March 16, 1992, no further requests for, or rearrangements of, Basic Digital Service will be accepted by the Company. Existing customers who will not experience any increase in rate will be converted to Base Rate Service at no charge. For those customers, Base Rate Service rates will apply. Customers who would experience a rate increase will continue to subscribe to Basic Digital Service.

A. Types and Description

Basic Digital Service (BDS) provides for the four-wire simultaneous two-way transmission of digital signals at synchronous speeds of 2.4, 4.8, 9.6 or 56 Kilobits per second (Kbps).

BDS is used to connect two customer premises for digital communication between such premises, or a customer premise and central office.

B. Regulations

In addition to the regulations set forth in Part 15, Sections 1 and 3, the following regulations apply to BDS.

1. The regulations specified herein are in addition to the applicable regulations specified in this Guidebook and in tariffs of this Company, except as modified in the following paragraphs:

a. Termination Charges

(1) When service is terminated by the customer, or by the Company for any reason for which it may terminate such service under the provisions of this Guidebook, prior to the expiration of the initial contract period, the following termination charges apply in addition to all charges due for the service which has been furnished:

(a) Contract Period of One Month

In the case of services for which the initial contract period is one month, the termination charge will be charges due for the unexpired portion of the one month period.

(b) Change Speed of Service

In the case of a change of speed from or to 2.4, 4.8, and 9.6 Kbps, termination charges do not apply. A change from 56 Kbps to 2.4, 4.8, 9.6 or vice versa constitutes a termination of contract and termination charges as specified in (a) preceding will apply.

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5. BASIC DIGITAL SERVICE (BDS) (cont'd)

B. Regulations (cont'd)

1. (cont'd)

a. (cont'd)

(1) (cont'd)

(c) The total amount of the nonrecurring charges may be deferred. The minimum amount that may be deferred is $1200.00. The deferred payment period must be equal to the customer's VTPP payment period.

(d) Termination charges apply to all changes in the serving address of the service.

2. Availability of Service

a. BDS is available on a 24 hour per day, seven days a week basis.

b. BDS can only be provided from central offices equipped with suitable digital facilities and equipment. Where special construction of facilities is necessary, such construction will be provided at the charges specified in Part 2, Section 5.

c. All signals generated by customer terminating equipment must meet signal and format constraints contained in Ameritech Technical Reference AN-TR-NPL-000007.

d. Suspension of service is not provided on BDS.

3. Minimum Service Period

The minimum service period is one month.

4. Channel Interface (CIs)

CIs are required for customer-provided premises equipment. The following CIs define the bit rates that are available for BDS.

CI Bit Rate

DU-24 2.4 Kbps DU-48 4.8 Kbps DU-96 9.6 Kbps DU-56 56.0 Kbps

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5. BASIC DIGITAL SERVICE (BDS) (cont'd)

C. Rates

The following rates and charges apply for BDS service in addition to the rates and charges for the associated service.

1. One channel termination is applicable to each station connected.

2. Channel mileage is portrayed in mileage bands. There are two rates that apply for each band, i.e., a flat rate per band and a rate per mile.

3. Channel Termination

Nonrecurring Monthly Description /Billing Code/ Charge Rate

2.4 Kbps /1DCPX/ $299.11 $59.00 4.8 Kbps /1DCPX/ 299.11 59.00 9.6 Kbps /1DCPX/ 299.11 59.00 56 Kbps /1DCPX/ 398.81 59.00

4. Channel Mileage

Monthly Rates Description /Billing Code/ Fixed Per Mile

(a) 2.4 Kbps /XUQ1X/ /1LNPB/

0 21.00/1/ None 0 to 4 21.00 2.65 5 to 8 21.00 2.65 9 to 25 21.00 2.65 26 to 50 21.00 2.65 51 and over 21.00 2.65

/1/ The fixed mileage rate does not apply to zero (0) mileage band channels connected to High Capacity Transport Service.

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5. BASIC DIGITAL SERVICE (BDS) (cont'd)

C. Rates (cont'd)

4. Channel Mileage (cont'd)

Monthly Rates Description /Billing Code/ Fixed Per Mile

Mileage Bands

(b) 4.8 Kbps /XUQ2X/ /1LNPC/

0 $21.00/1/ None 0 to 4 21.00 $2.65 5 to 8 21.00 2.65 9 to 25 21.00 2.65 26 to 50 21.00 2.65 51 and over 21.00 2.65

(c) 9.6 Kbps /XUQ3X/ /1LNP9/

0 21.00/1/ None 0 to 4 21.00 2.65 5 to 8 21.00 2.65 9 to 25 21.00 2.65 26 to 50 21.00 2.65 51 and over 21.00 2.65

(d) 56 Kbps /XUQ4X/ /1LNPD/

0 44.00/1/ None 0 to 4 44.00 5.25 5 to 8 44.00 5.25 9 to 25 44.00 5.25 26 to 50 44.00 5.25 51 and over 44.00 5.25

/1/ The fixed mileage rate does not apply to zero (0) mileage band channels connected to High Capacity Transport Service.

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PART 20 - Grandfathered Services Original Sheet 30 SECTION 15 - Dedicated Telecommunications / Private Line Services

6. HIGH CAPACITY TRANSPORT SERVICE

Effective March 16, 1992, no further requests for Direct High Capacity Service will be accepted by the Company. Existing customers who will not experience any increase in rate will be converted to DS1 Service at no charge. For those customers DS1 Service rates will apply. Customers who would experience a rate increase will continue to subscribe to Direct High Capacity Service.

A. General

1. High Capacity Transport Service consists of two-point digital channels and equipment which provides for simultaneous two-way isochronous transmission at a speed of 1.544 Megabits per second (Mbps). High Capacity Transport Service may be used to connect:

a. two customer premises

b. a customer premises and the central office

c. between central offices for access between Centrex Services.

B. Regulations

1. The regulations specified herein are in addition to the applicable regulations specified in this Guidebook and in tariffs of this Company.

2. High Capacity Transport Service is offered under the Variable Term Payment Plan (VTPP) as specified in Part 2, Section 3. All conditions and regulations pertaining to the VTPP are included in Part 2, Section 3, except as modified in the following paragraphs:

a. Termination Charges

(1) When service is terminated by the customer, or by the Company for any reason for which it may terminate such service under the provisions of this Guidebook, prior to the expiration of the initial contract period, the following termination charges apply in addition to all charges due for the service which has been furnished:

(a) Contract Period of One Month

In the case of services for which the initial contract period is one month, the termination charges will be charges due for the unexpired portion of a twelve month period.

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6. HIGH CAPACITY TRANSPORT SERVICE (cont'd)

B. Regulations (cont'd)

2. (cont'd)

a. Termination Charges (cont'd)

(1) (cont'd)

(b) Contract Periods of Three or Five Years

In the case of services for which the initial contract period is three or five years, the termination charges will be an amount equal to fifty per cent of the charges for the unexpired portion of such initial contract period, at the rate in effect at the time the service is discontinued.

3. Availability of Service

a. High Capacity Transport Service can only be provided from central offices equipped for appropriate digital transmission.

b. High Capacity Transport Service is available on channels confined to the name building or continuous property on a cost incurred basis.

4. Provision of Service

a. High Capacity Transport Service is available only on a two-point basis.

b. Performance Criteria

High Capacity Transport Service is designed to provide an average performance of at least 95% error-free seconds of transmission measured over a continuous 24 hour period.

5. Customer Signal Parameters

All signals generated by customer terminal equipment must meet the signal and format constraints described in Bell System Technical Reference Publication 43801 dated November, 982, Bell System Technical Reference Publication 41451 dated January, 1983 and in Bell System Technical Reference Publication 62411 dated September, 1993.

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6. HIGH CAPACITY TRANSPORT SERVICE (cont'd)

B. Regulations (cont'd)

6. Service Functions/Channelization

a. Channelization equipment will be provided by the Company at the central office. If the customer wants the channelization equipment located on his premises, the equipment must be provided by the customer.

b. The Company will provide channelization equipment at the central office when the customer desires two-point, premises to central office or central office to central office services.

c. Company provided central office channelization equipment provides service for up to 24 voice grade channels.

7. Channel Plug-Ins

One channel plug-in is required for each channel termination in the channelization equipment.

C. Rates and Charges

The following rates and charges apply for High Capacity Transport Service in addition to the rates and charges for the associated service.

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6. HIGH CAPACITY TRANSPORT SERVICE (cont'd)

C. Rates and Charges (cont'd)

1. Local channel

Description /Billing Code/ Rate

a. First mile or fraction thereof

Installation charge $960.25 Variable term option monthly rate - 1 month 260.30 - 36 months 251.00 - 60 months 241.80

b. Each additional mile or fraction thereof

Installation charge 233.75 Variable term option monthly rate - 1 month 79.50 - 36 months /1LDPB/ 76.60 - 60 months 73.80

2. Additional channel

Additional local channel rates and charges apply to the installation of each additional local channel furnished on the same occasion as the local channel, to the same customer to the same location, i.e., originating and terminating.

Description /Billing Code/ Rate

a. First mile or fraction thereof

Installation charge $960.25 Variable term option monthly rate - 1 month 158.35 - 36 months /1LDP2/ 153.85 - 60 months 149.30

b. Each additional mile or fraction thereof

Installation charge 233.75 Variable term option monthly rate - 1 month 33.05 - 36 months /1LDP4/ 32.10 - 60 months 31.20

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6. HIGH CAPACITY TRANSPORT SERVICE (cont'd)

C. Rates and Charges (cont'd)

Description /Billing Code/ Rate

3. Interoffice Mileage

a. First mile or fraction thereof

Installation charge - Variable term option monthly rate - 1 month $ 80.40 - 36 months /ILNPX/ 77.60 - 60 months 74.70

b. Each additional mile or fraction thereof

Installation charge - Variable term option monthly rate - 1 month 50.50 - 36 months /1LNPR/ 49.10 - 60 months 47.65

4. Channelization Equipment

a. Basic equipment to derive up to 24 Voice grade channels per 1.544 line

Installation charge Variable term option monthly rate - - 1 month - 36 months /VBD24/ 266.05 - 60 months 258.50 250.85

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6. HIGH CAPACITY TRANSPORT SERVICE (cont'd)

C. Rates and Charges (cont'd)

Description /Billing Code/ Rate

4. Channelization Equipment (cont'd)

b. Channel plug-ins

(1) Voice plug-in, per location

Two-wire Installation charge - Variable term option monthly rate - 1 month $ 6.40 - 36 months 6.25 - 60 months /VV2/ 6.05

Two-wire - off premise station Installation charge - Variable term option monthly rate - 1 month 6.35 - 36 months 6.20 - 60 months /VOM/ 6.00

Four-wire with no signaling or with E & M signaling Installation charge - Variable term option monthly rate - 1 month 4.45 - 36 months 4.30 - 60 months /VV4/ 4.20

Four-wire with SF signaling Installation charge - Variable term option monthly rate - 1 month 12.40 - 36 months 12.10 - 60 months /VV4SF/ 11.75

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7. DS3 SERVICE PACKAGES/1/

A. Term Payment Plans

Renewal Options

Term Payment Plan Renewal Program Option

Customers may upgrade to a larger DS3 Service Package at the same time as the service is renewed under the TPP Renewal Program. However, the customer will be provided a renewal credit based on the Service Package that was in place prior to the upgrade. If the customer subsequently terminates the larger DS3 Service Package prior to the expiration of the renewed TPP term, or downgrades to a Service Package that is smaller than the Service in place prior to the upgrade, the customer will be liable for a TPP renewal termination charge equal to the original TPP renewal credit.

The following renewal credits will apply to existing 36-month TPP service components renewed under the TPP Renewal Program.

TPP Renewal Credit Service Component 36 Months 60 Months

DS3 Service Package with Electrical Interface DS3 ( 1 package) $ 580.00 $ 1,160.00 DS3B ( 2 package) 1,120.00 2,240.00 DS3C ( 3 package) 1,580.00 3,180.00 DS3F ( 6 package) 2,840.00 5,670.00 DS3L (12 package) 4,210.00 8,420.00 DS3X (24 package) 6,450.00 12,890.00

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

A. Term Payment Plans (cont'd)

Renewal Options (cont'd)

Term Payment Plan Renewal Program Option

The following renewal credits will apply to existing 60-month TPP service components renewed under the TPP Renewal Program.

TPP Renewal Credit Service Component 36 Months 60 Months

DS3 Service Package with Electrical Interface DS3 ( 1 package) $ 970.00 $ 1,940.00 DS3B ( 2 package) 1,870.00 3,730.00 DS3C ( 3 package) 2,650.00 5,300.00 DS3F ( 6 package) 4,730.00 9,450.00 DS3L (12 package) 7,020.00 14,040.00 DS3X (24 package) 10,740.00 21,480.00

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

A. Term Payment Plans (cont'd)

Termination Charges

3. DS3 Service Packages

• Service discontinued in the first through 11th month

((.85 x 12-month TPP price) x (12 - number of months in service)) + ((12- month TPP price - subscribed to TPP price) x number of months in service) = Termination Charge

Example:

A customer subscribed to a 36-month TPP term and disconnected service at the end of the fifth month. This customer’s termination charge would be:

((.85 x 12-month TPP price) x (12 - 5 months)) + ((12-month TPP price - 36- month TPP price) x 5 months) = Termination Charge

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

A. Term Payment Plans (cont'd)

Termination Charges (cont'd)

3. DS3 Service Packages

• Service discontinued in the 12th through 60th month

The dollar difference between the current TPP price for the TPP term that could have been completed during the time the service was actually in service and the customer’s current TPP price for each month the service was provided.

Example:

A customer subscribed to a 60-month TPP term and disconnected service during the 37th month. This customer’s termination charge would be:

(36-month TPP price - 60-month TPP price) x 37 = Termination Charge

The 36-month TPP term could have been completed during the months the service was actually in service.

All recurring price termination charges will be based on the TPP prices in effect at the time of termination.

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

B. Definitions

DS3 Service Channel The individually activated DS3 channel(s) within a DS3 Service Package.

DS3 Service Package Provides the capability to provision a maximum number of DS3 channels.

Local Distribution Channel Provides interconnection between the Company Serving Wire Center (SWC) and the customer premises. Consists of two rates elements: DS3 Service Packages and DS3 Service Channels.

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

C. Terms and Conditions

In addition to the Terms and Conditions set forth in Part 15, Section 1, the following applies to DS3 Service.

1. DS3 Service Package

Each DS3 Service Package must have a minimum number of service channels activated at all times. A new DS3 Service Package must be installed with at least the minimum required Service Channels. A customer may not disconnect Service Channels from an existing DS3 Service Package below the minimum required in that package without downgrading the Service Package size or terminating the DS3 LDC Service.

DS3 Service Package (with Minimum Required Maximum Available Electrical Interface) SCs SCs DS3 1 1 DS3B 1 2 DS3C 1 3 DS3F 3 6 DS3L 7 12 DS3X 13 24

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

C. Terms and Conditions (cont'd)

1. DS3 Service Package (cont'd)

DS3 Service Packages are available with an optical channel interface. These DS3 Service Packages provide a single optical interface for multiple DS3 Service Channels (SCs) and are available as follows:

DS3 Service Package (with Minimum Required Maximum Number of DS3 Optional Interface) SCs in Package Equivalent SCs DS3012 1 12 DS3024 13 24

All DS3 service channels within the package must be ordered for termination at the same customer designated premises, billed to the same customer and in the same Serving Wire Center (SWC). All service channels in a package are required to be connected to other service components (i.e., channel mileage, multiplexing, or another service channel) at the time the service channel is installed, except at the fiber hub.

The interconnection of individual service channels with other components, such as channel mileage and multiplexing, may be different. For example, one service channel within the package may have multiplexing, while another service channel may have channel mileage associated with it. Components connected to each service channel in the service package may have different Term Payment Plans periods from the service package in which the service channels reside.

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

D. Prices

1. Service Elements

Monthly Payment Term Payment Plans 12 36 60 Monthly Description /Billing Code/ Months Months Months Extension

Local Distribution Channel/1/ - per point of termination • Electrical Interface - per service package

Zone 1 DS3 /PCG31/ $ 2,070.00 $ 855.00 $ 608.00 $ 2,070.00 DS3B /PCG31/ 2,700.00 1,652.00 1,173.00 2,700.00 DS3C /PCG31/ 3,690.00 2,355.00 1,666.00 3,690.00 DS3F /PCG31/ 6,615.00 4,590.00 2,970.00 6,615.00 DS3L /PCG31/ 10,350.00 6,660.00 4,410.00 10,350.00 DS3X /PCG31/ 15,750.00 9,450.00 6,750.00 15,750.00

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

D. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 12 36 60 Monthly Description /Billing Code/ Months Months Months Extension

Local Distribution Channel (cont'd) - per point of termination • Electrical Interface - per service package

Zone 2 DS3 /PCG32/ $ 2,139.00 $ 901.00 $ 643.00 $ 2,139.00 DS3B /PCG32/ 2,790.00 1,739.00 1,239.00 2,790.00 DS3C /PCG32/ 3,813.00 2,478.00 1,759.00 3,813.00 DS3F /PCG32/ 6,835.50 4,743.00 3,069.00 6,835.50 DS3L /PCG32/ 10,695.00 6,883.00 4,557.00 10,695.00 DS3X /PCG32/ 16,275.00 9,765.00 6,975.00 16,275.00

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

D. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 12 36 60 Monthly Description /Billing Code/ Months Months Months Extension

Local Distribution Channel (cont'd) - per point of termination • Electrical Interface - per service package

Zone 3 DS3 /PCG33/ $ 2,300.00 $ 933.00 $ 668.00 $ 2,300.00 DS3B /PCG33/ 3,000.00 1,801.00 1,286.00 3,000.00 DS3C /PCG33/ 4,100.00 2,564.00 1,825.00 4,100.00 DS3F /PCG33/ 7,350.00 5,100.00 3,300.00 7,350.00 DS3L /PCG33/ 11,500.00 7,400.00 4,900.00 11,500.00 DS3X /PCG33/ 17,500.00 10,500.00 7,500.00 17,500.00

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

D. Prices (cont'd)

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans 12 36 60 Monthly Description /Billing Code/ Months Months Months Extension

Local Distribution Channel - per point of termination

• Optical Interface - per service package

Zone 1 DS3012 /PCG31/ $ 9,500.00 $4,900.00 $3,000.00 $ 9,500.00 DS3024 /PCG31/ 15,000.00 7,000.00 4,000.00 15,000.00

Zone 2 DS3012 /PCG32/ 9,500.00 $4,900.00 $3,000.00 9,500.00 DS3024 /PCG32/ 15,000.00 7,000.00 4,000.00 15,000.00

Zone 3 DS3012 /PCG33/ 9,500.00 $4,900.00 $3,000.00 9,500.00 DS3024 /PCG33/ 15,000.00 7,000.00 4,000.00 15,000.00

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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7. DS3 SERVICE PACKAGES/1/ (cont'd)

D. Prices (cont'd)

1. Service Elements (cont'd)

Description /Billing Code/ Monthly Price

DS3 Service Channel - per termination • Electrical Zone 1 /HZ4X1/ $400.00 Zone 1 /HZ4X2/ 400.00 Zone 1 /HZ4X3/ 400.00

• Optical Zone 1 /HZ4X1/ 300.00 Zone 1 /HZ4X2/ 300.00 Zone 1 /HZ4X3/ 300.00

/1/ DS3 Service Packages will not be available to new customers after April 10, 2000. Customers with existing DS3 Service Packages may maintain their service as currently configured, or may add/reduce the number of active Service Channels within their existing Service Package configuration subject to the terms and conditions of this Guidebook. However, existing customers may not; order new DS3 Service Packages, renew their DS3 Service Package TPP, or upgrade their DS3 Service Packages after April 10, 2000. Customers may convert their existing DS3 Service Package(s) to DS3 Service as offered after April 10, 2000 at no charge as long as the new TPP is of equal or longer term as their previous Service Package TPP and there is no decrease in the quantity of DS3 channels. DS3 Service Packages will no be available after April 9, 2005.

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PART 20 - Grandfathered Services Original Sheet 48 SECTION 15 - Dedicated Telecommunications / Private Line Services

8. GIGAMAN® SERVICE

A Prices

1. Service Elements (cont'd)

Monthly Payment Term Payment Plans Description /Billing Code/ 84 Months/1/

Node Termination - per point of termination /N2TDX/ $690.00

Node Port - per 1 Gbps Channel Interface /LNVXO/ 310.00

Wire Center Termination - per termination /CTJ/ 30.00

Channel Mileage - per inter-wire center mile /3LN5S/ 30.00

/1/ Effective August 17, 2001, the 84-month recurring rate will no longer be available to new customers as part of the Term Payment Plan (TPP) for GigaMAN Service. Existing customers may retain the 84-month recurring rate through the length of their existing contract.

ATT TN OH-08-18004 Effective: April 1, 2008