AT&T TEXAS GUIDEBOOK

PART 5 - Centrex / Plexar Services 3rd Revised Sheet 36 SECTION 4 - Plexar Service Replacing 2nd Revised Sheet 36

PLEXAR-II (cont’d)

D. Rules and Regulations (cont’d)

21. Custom Calling Services are comprised of a group of features which permit customers to efficiently manage the call flow generated over their Local Exchange Access Lines. This management is possible only where the calling party's number is sent from the central office originating the call to the terminating central office serving the called party.

22. Any Company calling party, whether they subscribe to Caller ID services or not, may prevent the delivery of Calling Party Name and/or Number (CPN) to the called party by dialing an access code (*67 on their touch-tone pad or 1167 from a rotary telephone) immediately prior to placing a call. The access code activates per call blocking. Per call blocking is available at no charge.

23. If a calling party activates blocking, the CPN will not be transmitted across the station line, including calls within and outside the Plexar group. Instead, Calling Name and/or Number Delivery (CND) subscribers will receive an anonymous indicator. This anonymous indicator notifies the CND subscriber that the calling party chose to block number delivery.

24. Reserved (C) (D) (D) 25. The blocking of CPN will not be provided on calls originating from Pay Access Service.

26. CND service is offered on a subscription basis which requires the customer to order the service. Where CND service is available, any calling party, whether they subscribe to CND or not, has per call blocking capability, unless that customer is calling from a Pay Telephone Exchange Access Service.

27. The Company shall not be liable for any and all claims for damages caused or claimed to have been caused, directly or indirectly, by the transmission to a CND customer of a which the calling party has requested to be omitted from the Listing Information System or the disclosing of such telephone number to any person.

28. The Company shall not be liable for any and all claims for damages caused by a telecommunications utility failure to transmit the privacy indicator to the called party when such indicator has been passed to the telecommunication utility by the Company.

ATT TN TX-15-0070 Effective: November 25, 2015 AT&T TEXAS GUIDEBOOK

PART 5 - Centrex / Plexar Services 1st Revised Sheet 3 SECTION 5 - Other Plexar Services Replacing Original Sheet 3

PLEXAR-I SERVICE (cont’d)

A. General Regulations (cont’d)

8. The Add-On/Consultation Hold and Call Forwarding features are furnished subject to transmission limitations. The Company does not guarantee satisfactory transmission on such arrangements. If the customer requests additional equipment to improve transmission and it is feasible, additional rates and charges based upon the costs incurred apply.

9. TOUCH-TONE service is required for PLEXAR-I. Each exchange access line must terminate in at least one TOUCH-TONE instrument in order to use the PLEXAR-I features. The rates and charges for TOUCH-TONE, as specified in Part 4, Section 2, are applicable for each exchange access line.

10. The Call Transfer Disconnect feature cannot be used to expand a local calling scope and is therefore not available to customers subscribing to optional Extended Metropolitan Service (EMS) or Extended Area Calling Service (EACS). PLEXAR-I customers who were subscribing to optional EMS or EACS and also subscribed to Call Transfer Disconnect via the Special Service Assembly Request process as of June 19, 1991, will still be entitled to receive the feature until their PLEXAR-I system is either disconnected, moved or superseded. Such customer system will be allowed to grow to the 30-station capacity of the PLEXAR-I system.

11. When multiple call forwarding features are activated on the same line, Call Forwarding (Variable) will take precedence over the Call Forwarding-Busy Line and Call Forwarding-Don't Answer features.

12. Any Company calling party may prevent the delivery of Calling Party Name and/or Number (CPN) to the called party by dialing an access code (*67 on their touch-tone pad or 1167 from a rotary telephone) immediately prior to placing a call. The access code activates per call blocking. Per call blocking is available at no charge.

If a calling party activates blocking, the CPN will not be transmitted across the station line, including calls within and outside the Plexar group. Instead, Calling Name and/or Number Delivery (CND) subscribers will receive an anonymous indicator. This anonymous indicator notifies the CND subscriber that the calling party chose to block number delivery.

(D)

(D)

The blocking of CND will not be provided on calls originating from Pay Telephone Exchange Access Service.

13. CND service is offered on a subscription basis which requires the customer to order the service. Where CND service is available, any calling party, whether they subscribe to CND or not, has per call blocking capability, unless that customer is calling from a Pay Telephone Exchange Access Service.

ATT TN TX-15-0070 Effective: November 25, 2015 AT&T TEXAS GUIDEBOOK

PART 7 - Central Office Optional Features 1st Revised Sheet 7 SECTION 2 - Advanced Custom Calling Features Replacing Original Sheet 7

CALLER ID

A. General Regulations

1. Caller ID Service is the general category of the following services which assist customers in the management of incoming calls.

2. Calling Number Delivery - Allows the transmission of Calling Party Number (CPN) to the subscriber’s access lines. When a Calling Number Delivery equipped line is on-hook, CPN is transmitted across the line during the silent interval between the first and second ring. Call Number Delivery subscribers must provide and connect their own compatible customer premises equipment (CPE) to process the CPN transmission.

3. Calling Name Delivery - Enables the Caller ID subscriber to identify the calling party by a displayed name before the call is answered. The displayed name is the name associated with the CPN. When a Calling Name Delivery equipped line is on-hook, the Calling Party Name is transmitted across the line during the silent interval between the first and second ring. Calling Name Delivery subscribers must provide and connect their own compatible CPE to process the Calling Name Delivery transmission. Some call information may be blocked or otherwise not displayed, including information for some calls originating outside of the Company’s network and calls carried over facilities that do not transmit Caller ID information.

4. Anonymous Call Rejection (ACR)/1/ - Allows customer to automatically reject all calls that have been marked anonymous (see paragraph A.5 following) by the calling party. When ACR is active, the called party receives no alerting () for a call that has been rejected. The call is routed to a denial announcement and subsequently terminated.

5. Any Company calling party may prevent the delivery of CPN and of Calling Party Name to the called party by dialing an access code (*67 on their touch-tone pad or 1167 from a rotary telephone) immediately prior to placing a call. The access code activated per call blocking. Per call blocking is available at no charge.

If a calling party activates blocking, the CPN and Calling Party Name will not be transmitted across the line. Instead, the Caller ID subscriber will receive an anonymous indicator. This anonymous indicator notifies the Caller ID subscriber that the calling party chose to block name and number delivery.

Blocked Caller ID information will be delivered to certain qualifying customers as described in FCC Memorandum Opinion and Order, CC Docket No. 91-281, adopted January 4, 2002. Such customers must certify to the Company compliance with the waiver order's eligibility requirements.

(D)

(D)

The blocking of CPN and Calling Name Delivery will not be provided on calls originating from Pay Telephone Exchange Access Service.

/1/ Anonymous Call Rejection is grandfathered for business customers as of October 31, 2012, except for existing business customers at existing locations who subscribed to the service prior to October 31, 2012.

ATT TN TX-15-0070 Effective: November 25, 2015 AT&T TEXAS GUIDEBOOK

PART 17 - ISDN Services 1st Revised Sheet 13 SECTION 1 - ISDN Basic Rate Interface (BRI) Replacing Original Sheet 13

DIGILINE SERVICE/1/ (cont’d)

A. General (cont’d)

5. Regulations (cont’d)

f. (cont’d):

4. If the customer's normal serving office is not located within a DigiLine Service Area, the customer may be provided DigiLine Service from a Company designated DigiLine equipped central office in a DigiLine Service Area within the customer's LATA. In such cases, the charges for the Link Extension Equipment and Link Extension Facility specified in paragraph B.3 will apply in addition to the other charges for DigiLine Service.

5. In case 4, preceding, when the customer's normal serving office becomes DigiLine equipped, the customer's DigiLine Service will be moved from their original DigiLine serving office to the customer's normal serving office. Such a move will require the customer to change number(s), and in conjunction therewith, the Company will waive the provisions and charges for moves specified in paragraph A.8. The Link Extension Equipment and Link Extension Facility charges will no longer apply once the customer's DigiLine Service has been moved to their normal serving office. However, if agreed to by the Company, the customer may request that their DigiLine Service not be moved to their normal serving office. In such case, the Link Extension Equipment charges will apply in addition to the rates, charges, terms and conditions of Foreign Exchange (FX) Service pursuant to Part 15, Section 2. FX charges will apply on a per B channel basis.

g. The following regulations apply to Caller ID:

1. Caller ID subscribers must provide and connect their own compatible customer premises equipment to process the calling party number information, and name information.

2. Any Company calling party may prevent the delivery of their number and name to the called party by dialing an access code (*67 on their key pad) immediately prior to placing a call. The access code activates per call blocking. Per call blocking is available at no charge. If a calling party activates blocking, the calling number and name will not be delivered across the line. Instead, Caller ID subscribers will receive an anonymous indicator. This anonymous indicator notifies the Caller ID subscriber that the calling party chose to block the number delivery, and name delivery. (C) (D) (D) The blocking of Caller ID will not be provided on calls originating from Pay Telephone Exchange Access Service.

3. Caller ID is offered on a subscription basis which requires the customer to order the service. Where Caller ID service is available, any calling party, whether they subscribe to Caller ID or not, has per call blocking capability, unless the customer is calling from Pay Telephone Exchange Access Service.

/1/ DigiLine Service is not available at customer locations which are served by fiber to the premises.

ATT TN TX-15-0070 Effective: November 25, 2015 AT&T TEXAS GUIDEBOOK

PART 20 - Grandfathered Services 3rd Revised Sheet 23 SECTION 5 - Centrex / Plexar Services Replacing 2nd Revised Sheet 23

OBSOLETE PLEXAR-II/1/ (cont’d)

E. Regulations (cont’d)

14. Services for dormitories administered by educational institutions may be provided at the rates and under the regulations specified under Centrex Service found later in this Section. PLEXAR- II service rates and charges apply to the institution's administrative service.

15. Custom Calling Services are comprised of a group of features which permit customers to efficiently manage the call flow generated over their Local Exchange Access Lines. This management is possible only where the calling party's telephone number is sent from the central office originating the call to the terminating central office serving the called party.

16. Any Company calling party may prevent the delivery of Calling Party Number (CPN) to the called party by dialing an access code (*67 on their touch-tone pad or 1167 from a rotary telephone) immediately prior to placing a call. The access code activates per call blocking. Per call blocking is available at no charge.

17. If a calling party activates blocking, the CPN will not be transmitted across the station line, including calls within and outside the Plexar group. Instead, Calling Number Delivery (CND) subscribers will receive an anonymous indicator. This anonymous indicator notifies the CND subscriber that the calling party chose to block number delivery.

18. Reserved (C) (D) (D) 19. The blocking of CPN will not be provided on calls originating from Pay Telephone Exchange Access Service.

20. CND service is offered on a subscription basis which requires the customer to order the service. Where CND service is available, any calling party, whether they subscribe to CND or not, has per call blocking capability, unless that customer is calling from a Pay Telephone Exchange Access Service.

21. The Company shall not be liable for any and all claims for damages caused or claimed to have been caused, directly or indirectly, by the transmission to a CND customer of a telephone number which the calling party has requested to be omitted from the Listing Information System or the disclosing of such telephone number to any person.

22. The Company shall not be liable for any and all claims for damages caused by a telecommunications utility failure to transmit the privacy indicator to the called party when such indicator has been passed to the telecommunication utility by the Company.

/1/ Available only to existing systems.

ATT TN TX-15-0070 Effective: November 25, 2015 AT&T TEXAS GUIDEBOOK

PART 20 - Grandfathered Services 2nd Revised Sheet 7 SECTION 17 - ISDN Services Replacing 1st Revised Sheet 7

SELECTVIDEO PLUS SERVICE/1/ (cont’d)

D. Regulations (cont’d)

15. The following regulations apply to Calling Line Identification (CLID):

a. Any Company calling party may prevent the delivery of calling party number (CPN) to the called party by dialing an access code immediately prior to placing a call. The access code activates per call blocking. Per call blocking is available at no charge.

If a calling party activates blocking, the CPN will not be transmitted across the line. Instead, Calling Line Identification subscribers will receive an anonymous indicator. This anonymous indicator notifies the Calling Line Identification subscriber that the calling party chose to block the number delivery.

(D)

(D) The blocking of Calling line Identification will not be provided on calls originating from Pay Telephone Exchange Access Service.

b. The Company shall not be liable for any and all claims for damages caused or claimed to have been caused, directly or indirectly, by the transmission to a Calling Line Identification subscriber of a telephone number which the calling party has requested to be omitted from the Listing Information System or the disclosing of such a telephone number to any person.

The Company shall not be liable for any and all claims for damages caused by a telecommunications utility failure to transmit the anonymous indicator to the called party when such indicator has been passed to the telecommunications utility by the Company.

c. The customer shall use Calling Line Identification solely for the purpose of call processing, billing and account management purposes and shall not publicize or disclose any information associated with the calling party without written permission from the party to whom the telephone number has been assigned. By way of illustration, and not limitation, the customer shall not use any Calling Line Identification information for or list-generation efforts without written permission. This restriction does not prohibit the Calling Line Identification subscriber from: - verifying network performance or testing the provision of the Calling Line Identification service; - compiling, using and disclosing aggregate Calling Line Identification information; or - complying with applicable law or legal process.

d. Identification of specific stations or extensions served by CPE may not be possible. The main listed number of the calling party may be transmitted.

e. Calling party numbers will not be transmitted for calls made on multiparty lines. The called party will receive an "unavailable" indicator.

f. Calling party numbers will be transmitted for calls made from another central office only if it is linked by appropriate facilities.

/1/ Obsolete Service - For new customers as of January 1, 1997, see SelectVideo Service found later in this Section.

ATT TN TX-15-0070 Effective: November 25, 2015