297-1001-825 DMS-100 Family Glossary of Terms and Abbreviations Reference Manual NA008 Standard 04.03 August 1999 DMS-100 Family Glossary of Terms and Abbreviations Reference Manual Publication number: 297-1001-825 Product release: NA008 Document release: Standard 04.03 Date: August 1999 1992–1999 Northern Telecom All rights reserved Printed in the United States of America NORTHERN TELECOM CONFIDENTIAL: The information contained in this document is the property of Northern Telecom. Except as specifically authorized in writing by Northern Telecom, the holder of this document shall keep the information contained herein confidential and shall protect same in whole or in part from disclosure and dissemination to third parties and use same for evaluation, operation, and maintenance purposes only. Information is subject to change without notice. Northern Telecom reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant. DMS, DMS SuperNode, MAP, Nortel, and NT are trademarks of Northern Telecom. DMS-100 Family Glossary Reference Manual NA008 iii Publication history August 1999 BASE08 Standard 04.03 Updated the definition for the Cutoff On Disconnect (COD) feature. March 1998 BASE08 Standard 04.02 Text converted to comply with Nortel Standard English. May 1997 BASE08 Standard 04.01 Added terms. December 1993 BCS36 Standard 03.01 • made technical and editorial changes to existing terms • added terms March 1993 BCS35 Standard 02.01 • made technical and editorial changes to existing terms • added terms July 1992 BCS34 Standard 01.01 • changed the document number from 297-1001-125 to 297-1001-825 • made technical and editorial changes to existing terms • added terms DMS-100 Family Glossary Reference Manual NA008 v Contents About this document vii Numerical entries 1-1 A entries 2-1 B entries 3-1 C entries 4-1 D entries 5-1 E entries 6-1 F entries 7-1 G entries 8-1 H entries 9-1 I entries 10-1 J entries 11-1 K entries 12-1 L entries 13-1 M entries 14-1 N entries 15-1 O entries 16-1 P entries 17-1 Q entries 18-1 R entries 19-1 DMS-100 Family Glossary Reference Manual NA008 vi Contents S entries 20-1 T entries 21-1 U entries 22-1 V entries 23-1 W entries 24-1 X entries 25-1 297-1001-825 Standard 04.03 August 1999 vii About this document When to use this document This document contains terms, abbreviations, and acronyms for the DMS-100 Family switching systems. How to use this document Terms, abbreviations, and acronyms are in alphabetical order, without regard to punctuation and non alphanumeric characters. Terms that contain numbers and begin with letters follow the standard that numbers precede letters. For example, B8ZS appears between B and backward channel. Terms that begin with numbers are in the first section of the glossary, “Numerical entries.” This document uses reference words to provide information about the listed terms. The following table identifies the reference words and explains their use. Reference words Meaning Also known as Indicates the term defined is identical in meaning to the reference, and each term is acceptable. Previously known as Used with current terms to list obsolete terms. Preferred term is Used with obsolete abbreviations to indicate the preferred terms and abbreviations. See Used with obsolete terms to refer to the current or preferred terms. Used with synonyms to indicate the term with its definition. See also Refers to terms that provide additional information to this definition. DMS-100 Family Glossary Reference Manual NA008 viii About this document Some abbreviations for DMS-specific and telephony terms are industry standard and better known than their expanded form. The following abbreviations are in this glossary without their expanded form. Each term is defined in the glossary. Abbreviation Expansion ANSI American National Standards Institute ASCII American National Standard Code for Information Interchange CMS Call Management Service CCITT International Telegraph and Telephone Consultative Committee CLASS Custom Local Area Signaling Services CPU central processing unit DMS Digital Multiplex System ETSI European Telecommunication Standards Institute ISDN integrated services digital network I/O input/output LAN local area network MAP maintenance and administration position POTS plain-old telephone service or plain ordinary telephone service TOPS Traffic Operator Position System How to check the version and issue of this document Check the release information in DMS-10 and DMS-100 Product Documentation Directory, 297-8991-001. This information determines which version of this document applies to the software in your office. This information also determines the layout of your product documentation. 297-1001-825 Standard 04.03 August 1999 1-1 Numerical entries 1 1FR See one-party flat rate (1FR) line. 1MR See one-party message rate (1MR) line. 2 2B1Q (two binary one quaternary) The American National Standards Institute defines 2BiQ as: The interface standard for ISDN basic rate interface (BRI) transmission between the network and the NT1. See also basic rate interface (BRI). 2WW two-way wide area telephone service (WATS) 3 3.1-kHz audio The bearer capability that allows a voice channel to carry data. The voice channel uses a modem or modem equivalent to carry data. 3WC See Three-way Calling (3WC). DMS-100 Family Glossary Reference Manual NA008 1-2 Numerical entries 3WCPUB See Three-way Calling with Public Announcement (3WCPUB). 4 4FR See four-party flat rate (4FR) line. 6 68020 The Motorola MC68020 32-bit microprocessor 6WC See six-way calling (6WC). 8 800+ See 800 Plus Service (800+). 800 Plus Service (800+) A Common Channel Signaling 7 (CCS7) on-line database-query system feature that provides network intelligence. This feature provides network intelligence to a toll office or an end office (EO). See also 800 Service, Basic 800 Service, Enhanced 800 Service (E800 Service). 800 Service An inter-toll office service in which the called party pays for the toll calls. Another name for 800 Service is inward wide area telephone service INWATS). See also 800 Plus Service (800+), Basic 800 Service, Enhanced 800 Service (E800 Service). 802.3 10BASE–T An IEEE standard for the operation of Ethernet LANs on twisted-pair cable. The transmission rate is 10 Mbit/s. 297-1001-825 Standard 04.03 August 1999 Numerical entries 1-3 8080 The number that a DMS switch uses to initialize a data store. The DMS switch uses this number instead of zero. 8FR See eight-party flat rate (8FR) line. 9 911 See Basic 911 Emergency Service (B911). 10 10BASE–T An Ethernet LAN that works on twisted-pair wiring (telephone cabling). 10 HDBH See ten high-day busy hour (10 HDBH). DMS-100 Family Glossary Reference Manual NA008 2-1 A entries AABS See Automated Alternate Billing Service (AABS). AAE See auxiliary access equipment (AAE). A/B bit facility A type of call processing software. The A/B bit facility operates either from the subscriber carrier module-100S(SMS) or from the subscriber carrier module. The A/B bit facility sends call processing instructions to the A-bit/B-word derived data link (DDL) message circuit pack. This facility scans the A-bit/B-word DDL message circuit pack for responses to previously sent instructions. Abbreviated Dial Plan A feature that allows subscribers to dial a one or two-digit number to place a call. The system translates the abbreviated number into the destination number. ABBT See automatic board-to-board testing (ABBT). ABD See average busy day (ABD). ABH See average busy hour (ABH). A bit A signaling bit that passes signaling information for each channel between a peripheral module (PM) and a subscriber carrier module. Signaling information includes hook status and ringing. DMS-100 Family Glossary Reference Manual NA008 2-2 A entries A-bit/B-word circuit pack A subscriber carrier module-100 rural (SMR) card that inserts A bits and B words into the pulse code modulation (PCM) data stream. The SMR card extracts A bits and B words from the data stream. This card performs inactive supervision on subscriber lines. A-bit/B-word derived data link message circuit pack A subscriber carrier module-100S (SMS) or subscriber carrier module-100S remote (SMSR) card. The SMS or SMSR card inserts A bits, B words, and derived data link (DDL) bits into the pulse code modulation (PCM) data stream. The SMS or SMSR card extracts A bits, B words, and DDL bits from the data stream. These cards perform inactive supervision on subscriber lines. A-bit scanner Part of the A/B bit facility in the subscriber carrier module-100S (SMS) or the subscriber carrier module-100S remote (SMSR) signaling processor (SP). The A-bit scanner scans the A bits in the A-bit/B-word derived data link (DDL) message circuit pack. The A-bit scanner checks for on-hook and flash conditions. This scanner also scans for remote concentrator SLC-96 (RCS) responses to automatic numbering identification (ANI)/coin requests, and digits. The A-bit scanner waits a specified length of time for answer, disconnect, flash, and digit collection. ABS See alarm battery supply (ABS), average busy season (ABS). ABSBH See average busy-season busy hour (ABSBH). abstract terminal (AT) The standard software specification of the actions between the network and the physical terminal at the network level. ac See alternating current (ac). AC answer charge. See also attendant console (AC). ACB See Automatic Call Back (ACB). 297-1001-825 Standard 04.03 August 1999 A entries 2-3 access charge recording (ACR) The Nortel automatic message accounting (AMA) system of billing feature group B (FGB) calls. The system provides access charge recording in end offices or tandem offices.