Page 3 - CONTENTS
CONTENTS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A AB BO OU UT T T TH HI ...
Page 15 - xv
CONTENTS xv _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table 8-8. Requiremen...
Page 16 - xvi
xvi CONTENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________...
Page 17 - ABOUT THIS DOCUMENT; Designing telecommunications networks; PREREQUISITE SKILLS AND KNOWLEDGE; An Introduction to AT&T; DOCUMENT ORGANIZATION; xvii
ABOUT THIS DOCUMENT _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ This document...
Page 18 - xviii; PART I; Generic 1 and Generic 2 communications systems.
xviii ABOUT THIS DOCUMENT _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________...
Page 19 - xix; HOW TO MAKE COMMENTS ABOUT THIS DOCUMENT
ABOUT THIS DOCUMENT xix _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ HOW TO MA...
Page 20 - xx
xx ABOUT THIS DOCUMENT _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________...
Page 21 - INTRODUCTION TO CONNECTIVITY; Transmission types
1. INTRODUCTION TO CONNECTIVITY _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ T...
Page 25 - the same amplitude as the analog signal at the sampled point.; communications system contains a codec, called a digitizer,
TRANSMISSION TYPES 1-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • Voice: T...
Page 27 - communications systems —; , the analog port samples the analog
TRANSMISSION STATES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ When you plan...
Page 28 - Figure 1-2. Transmission States for Voice Communication
1-8 TRANSMISSION STATES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ______________________...
Page 29 - Circuit Packs; Traditional Universal; Exiting the Switch
TRANSMISSION STATES 1-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • Incomin...
Page 30 - Analog CO
1-10 TRANSMISSION STATES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________...
Page 31 - DATA TRANSMISSION
TRANSMISSION STATES 1-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ DATA TRA...
Page 32 - Figure 1-3. Transmission States for Data Transmission
1-12 TRANSMISSION STATES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________...
Page 33 - Protocols Used; Layer 1 Protocols; Generic 1 and 2 systems use this protocol for; Analog — A modulated carrier signal.
TRANSMISSION STATES 1-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Protocol...
Page 34 - Layer 2 Protocols; At layer 2, the protocols are given below.; Protocol States; Table 1-3. Protocol States for Data Communication
1-14 TRANSMISSION STATES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________...
Page 35 - Protocol Code; Connectivity Rules
TRANSMISSION STATES 1-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Note tha...
Page 37 - Time-Division Multiplexing
MULTIPLEXED COMMUNICATION _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ As sign...
Page 38 - Statistical Multiplexing; Communications
1-18 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________...
Page 39 - Line Coding; Alternating Mark Inversion; volts. That is, every other 1 is represented
MULTIPLEXED COMMUNICATION 1-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Li...
Page 40 - B8ZS Line Coding
1-20 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________...
Page 41 - Signal Inversion; Channel Traffic
MULTIPLEXED COMMUNICATION 1-21 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Si...
Page 44 - Framing
1-24 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________...
Page 45 - D4 Framing; Signaling
MULTIPLEXED COMMUNICATION 1-25 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Th...
Page 47 - 4th-Channel Signaling; There are three variations of 24th-channel signaling:; Channels
MULTIPLEXED COMMUNICATION 1-27 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Fa...
Page 48 - Signaling Types; Tie lines to other private switches
1-28 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________...
Page 49 - MULTIPLEXING OUTSIDE THE SWITCH
MULTIPLEXED COMMUNICATION 1-29 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ MU...
Page 51 - Compressing the Signal; II; II; DDS data-port adaptors
MULTIPLEXED COMMUNICATION 1-31 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Co...
Page 52 - Changing the Transmission Medium from Metallic to Fiber-Optic; Microwave System T1 Trunk Capacity; Demultiplexing
1-32 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________...
Page 53 - Figure 1-10. Possible Multiplexed Connections
MULTIPLEXED COMMUNICATION 1-33 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ AT...
Page 54 - STATISTICAL MULTIPLEXING
1-34 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________...
Page 55 - systems, and the switch at a central office.
TRUNKING _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Trunks are the transmiss...
Page 56 - attendant or ACD agents.
1-36 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________________...
Page 57 - Special-Access Trunks; number identification service (DNIS) is a; Spectrum of Digital Services,
TRUNKING 1-37 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ numbers (without th...
Page 58 - Advanced Private Line Termination (APLT) Trunks; CONNECTIVITY; and
1-38 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________________...
Page 59 - Access can also be switched or nonswitched.; systems use
TRUNKING 1-39 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Access can also be ...
Page 60 - Signaling Protocols
1-40 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________________...
Page 61 - System 75/G1 Administration; Trunk Type; Comm Type; Group Type; DS1 Options
TRUNKING 1-41 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ DMI — A DS1 link th...
Page 62 - INTERFACE CIRCUIT
1-42 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________________...
Page 65 - Table 1-11. Generic 1 and Generic 2 Digital Trunks — Voice BCC
TRUNKING 1-45 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table 1-11. Generic...
Page 73 - COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW
2. COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _______________________________________________________________________...
Page 74 - TYPES OF NETWORKS
2-2 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________________________________________________...
Page 75 - NETWORK EVOLUTION
COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________...
Page 76 - Software; Basic Networking Software
2-4 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________________________________________________...
Page 77 - Trunk access through dial access codes; System 75 and Generic 1 UDP Package
COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________...
Page 78 - switch for processing.; , System 85, and Generic 2 Multipremises Package; , System 85, or Generic 2 communications system; , System 85, and Generic 2 Multipremises package; System 75 and Generic 1 PNA Package
2-6 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________________________________________________...
Page 79 - Distributed Communications System; Generic 2 communications systems use the data; NETWORK CALL PROCESSING; The internal dial plan recognizes the type of call being made.
COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________...
Page 80 - communication systems.; Internal Dial Plan; Uniform Numbering; , System 85, and Generic 2 communications systems it is a separate
2-8 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________________________________________________...
Page 81 - Figure 2-1. Internal Dial Plan Interactions; — Extension number steering — On a
COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________...
Page 82 - the extension and RNX number to AAR for processing.; , System 85, and Generic 2 systems, the UDP function is called RNX; Auxiliary Call Information
2-10 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________________________________________________...
Page 83 - Communications System Generic 2 Administration; Automatic Alternate Routing; System 85, or Generic 2 communications systems.
COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________...
Page 85 - Selecting a Trunk Group
COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________...
Page 86 - Automatic Route Selection; Analyzing the dialed number
2-14 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________________________________________________...
Page 87 - Unauthorized calls. These ARS sends to intercept.
COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________...
Page 88 - before processing the call further.; Modifying the Digits
2-16 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________________________________________________...
Page 89 - NETWORK ADMINISTRATION
COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________...
Page 90 - Table 2-2. Network Administration Terminals and Systems; Generic 2
2-18 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________________________________________________...
Page 93 - TANDEM TIE TRUNK NETWORKS; A tandem tie trunk (TTT) network is an network of; INTERACTIONS WITH OTHER NETWORKS
3. TANDEM TIE TRUNK NETWORKS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A ta...
Page 95 - OR MULTIPREMISES PACKAGES; MS/T configurations are appropriate when:
4. MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ __________________________________...
Page 96 - Main-Satellite Configuration; Main-satellite configurations offer the following features:
4-2 MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________________...
Page 97 - Main-Tributary Configuration; A tributary can have one or more attendant positions.
MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES 4-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _________________________________...
Page 99 - Figure 4-3. Dialing Patterns From Tributary or Satellite to Main; Figure 4-4. Dialing Patterns From Main to Satellite or Tributary
MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES 4-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _________________________________...
Page 100 - Figure 4-5. Dialing Patterns From Main to Tandem
4-6 MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________________...
Page 101 - Routing Incoming Calls; Public network calls arrive with the extension number.; Routing Outgoing Calls; From the MS/T complex to the tandem or main:
MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES 4-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _________________________________...
Page 102 - From the main to the satellite or tributary:; Other Routing Capabilities; The; No second dial tone returned at the receiving end upon seizure.
4-8 MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________________...
Page 103 - Cannot be used in an ISDN-PRI arrangement.; INTERACTIONS; PRI trunks cannot be used as tie or access trunks in an MS/T complex.
MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES 4-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _________________________________...
Page 105 - PNA PACKAGES; System 85, or Generic 1 or 2 communications system.; ETN CONFIGURATIONS; Tandem switches that accept and/or pass on call traffic
5. ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________...
Page 106 - ETN TRUNKS
5-2 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________________________________________________...
Page 108 - Access and Bypass Access Tie Trunks
5-4 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________________________________________________...
Page 109 - FEATURES; Three features are used in the implementation of an ETN:; Uniform Numbering Plan
ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES 5-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________...
Page 110 - Figure 5-3. Private Network Uniform Numbering Plan
5-6 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________________________________________________...
Page 112 - Extension Number Portability Clusters
5-8 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________________________________________________...
Page 113 - Software-Defined Network; Access to SDN is either switched or nonswitched.; and 2 communications systems can fulfill these requirements.
ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES 5-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________...
Page 116 - extension number it receives.; Release Link Trunk Networks — CAS and ACD
5-12 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ ______________________________________________________________________________________________________...
Page 117 - Figure 5-8. Centralized Attendant Service; Centralized Attendant Service; communications systems.
ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES 5-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ __________________________________________________...
Page 118 - Distributed Communications System Clusters; See chapter 6 for a detailed explanation of DCS.; ENGINEERING CONSIDERATIONS; The chapter on Designing Alternate Routing Networks in the; Communications System and System
5-14 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ ______________________________________________________________________________________________________...
Page 119 - , System 85, and Generic 2 communications systems, the link is
6. DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________...
Page 120 - DCS CLUSTERS; Switch Node; DCS; DCS LINKS
6-2 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __...
Page 121 - Tie Trunks; Signaling Links; , System 85, and Generic 2 communications; Switch Physical; Generic 1
DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________...
Page 122 - Transmission Media; Figure 6-2. Internally Connected DCS Signaling Channel Over a DS1
6-4 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __...
Page 123 - Communications System; Communications System Generic 2.1 to Generic 1.1
DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________...
Page 124 - Linkage Design
6-6 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __...
Page 125 - G H
DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________...
Page 126 - Data Service Unit
6-8 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __...
Page 128 - MTDM
6-10 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _...
Page 132 - TRANSPARENT FEATURES; Attendant Call Waiting
6-14 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _...
Page 133 - Table 6-3. Availability of Attendant Features; Alphanumeric Display
DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________...
Page 134 - Group Selection button.
6-16 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _...
Page 135 - Alerting—Distinctive Ringing
DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________...
Page 136 - Call Coverage Tone; Call Forwarding; Call Waiting
6-18 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _...
Page 137 - Audio Information Exchange (AUDIX) Features Transparency; . The enhancements are noted in the following list:
DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________...
Page 140 - PBXs, an economical alternative to incorporating two DSUs
6-22 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _...
Page 141 - ADMINISTRATION CONSIDERATIONS; To determine how to administer DCS nodes, refer to the; Communications System System 75 and; Communications System System 85 and
DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________...
Page 142 - PBX and; — Call Coverage Tone
6-24 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _...
Page 143 - DATA CONNECTIVITY — AN OVERVIEW
7. DATA CONNECTIVITY — AN OVERVIEW _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________________...
Page 144 - DATA COMMUNICATIONS VARIABLES; Terminals; Communications Protocols
7-2 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 146 - Synchronous vs. Asynchronous
7-4 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 148 - Transmission Speed
7-6 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 149 - Type of Communications Channel; Creating Switch — Packet vs. Circuit Switches
DATA CONNECTIVITY — AN OVERVIEW 7-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________________...
Page 150 - Channel Assignment — Dial-up vs. Dedicated Connections
7-8 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 151 - See chapter 8 for specific modem pool configurations.; SPECIAL DATA FEATURES; Terminal Dialing
DATA CONNECTIVITY — AN OVERVIEW 7-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________________...
Page 152 - Table 7-1. Data Feature vs Communications Systems
7-10 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________...
Page 153 - CR; Data Protection; This; Data Protection is provided in two forms:; Data Privacy; code that the user enters when placing the call.; Data Restriction; Data Only Off-Premises Extension
DATA CONNECTIVITY — AN OVERVIEW 7-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________________...
Page 155 - DATA COMMUNICATIONS CAPABILITIES
8. DATA COMMUNICATIONS CAPABILITIES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________________...
Page 159 - DCE POSSIBILITIES; digital service are provided at the remote end of; Voice Terminal Adjunct Data Modules
DTE CONNECTIONS 8-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ DCE POSSIBILI...
Page 160 - Standalone Data Modules; modification kit. With this; ADUs
8-6 DTE CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________...
Page 164 - MODEM POOLING CONNECTIONS
8-10 DTE CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________...
Page 166 - Figure 8-5. Modem Pooling over a DS1 Channel
8-12 DTE CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________...
Page 168 - LAN TRANSMISSION MEDIA
8-14 LOCAL AREA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 169 - Communication Between the LAN and Outside DTEs
LOCAL AREA NETWORK CONNECTIONS 8-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________________...
Page 170 - Type of
8-16 LOCAL AREA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 172 - ISN Communication; Communication Between the LAN and Other Networks
8-18 LOCAL AREA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 174 - The Communication System as a LAN Backup
8-20 LOCAL AREA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 175 - Packet Service; APS Applications; Database searches and updates; APS Access
PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________...
Page 176 - SDS and SDDN Applications; SDS and SDDN applications include:
8-22 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________...
Page 177 - Connections to the Public SDN/SDDN Circuit-Switched Data Network
PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS 8-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _______________________________________________________________________...
Page 178 - Table 8-6. Requirements for Connections from the PBX to SDS/SDDN
8-24 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________...
Page 180 - Digital Data Service, or the SKYNET; Private Connections Through
8-26 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________...
Page 181 - If an MPDM is used, it must be installed with a V.35 interface and an; SW56 modification
PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS 8-27 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _______________________________________________________________________...
Page 182 - Figure 8-19. Private Data Network with 24
8-28 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________...
Page 183 - Private Terrestrial Connections Through; Robbed Bit Dedicated or Data Data
PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS 8-29 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _______________________________________________________________________...
Page 184 - Satellite Private Data Network Links
8-30 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________...
Page 186 - Figure 8-22. Telemarketing Gateway Configuration
8-32 TELEMARKETING HOST CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 189 - DATA NETWORK ADMINISTRATION
DATA NETWORK ADMINISTRATION _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ The l...
Page 191 - DATA COMMUNICATIONS CONFIGURATIONS; you can configure your networks to:; modification kit. This MPDM is sometimes called the MPDM/M1* or the
9. DATA COMMUNICATIONS CONFIGURATIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ __________________________________________________________________________________...
Page 192 - DSC AND PSC CONNECTIONS; Analog line and trunk ports
9-2 DATA COMMUNICATIONS CONFIGURATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______...
Page 195 - SNA NODE CONNECTIONS
DATA COMMUNICATIONS CONFIGURATIONS 9-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _________________________________________________________________________________...
Page 196 - Switched Digital Service,; Video Teleconferencing; Switched Digital Service or the Software-Defined
9-6 DATA COMMUNICATIONS CONFIGURATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______...
Page 197 - Switched Digital Service or Software-Defined; FAX Transmittal; Switched Digital Service or the Software-Defined Digital
DATA COMMUNICATIONS CONFIGURATIONS 9-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _________________________________________________________________________________...
Page 198 - Figure 9-5. A Possible Imaging Configuration
9-8 DATA COMMUNICATIONS CONFIGURATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______...
Page 199 - Reference
A. RELATED DOCUMENTS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ GENERAL Oper...
Page 200 - Multiplexer to
A-2 RELATED DOCUMENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________...
Page 201 - Introduction to
RELATED DOCUMENTS A-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A Guide to ...
Page 202 - Feature Translations for
A-4 RELATED DOCUMENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________...
Page 203 - PBX Systems — Application Notes —; SYSTEM 75 AND GENERIC 1
RELATED DOCUMENTS A-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ System 75, ...
Page 204 - PBX Systems — Application Notes — Trunk
A-6 RELATED DOCUMENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________...
Page 205 - Sales; SYSTEM 85 AND GENERIC 2
RELATED DOCUMENTS A-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Sales Data ...
Page 206 - Operation
A-8 RELATED DOCUMENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________...
Page 209 - B. SYNCHRONIZATION OF DIGITAL FACILITIES; THE NEED FOR SYNCHRONIZATION
B. SYNCHRONIZATION OF DIGITAL FACILITIES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _______________________________________________________________________________...
Page 211 - SYNCHRONIZATION HIERARCHY
SYNCHRONIZATION OF DIGITAL FACILITIES B-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________...
Page 217 - Blue alarm means that the switch cannot be used as a reference.
SYNCHRONIZATION OF DIGITAL FACILITIES B-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________...
Page 219 - CHANGES TO THE SCS SOFTWARE MADE AVAILABLE VIA SOFTWARE PATCHES
SYNCHRONIZATION OF DIGITAL FACILITIES B-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________...
Page 220 - System 75 and Generic 1 Synchronization Software Operation; On-line synchronization reference failure
B-12 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___...
Page 221 - system status
SYNCHRONIZATION OF DIGITAL FACILITIES B-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________...
Page 222 - The DS1 reference determines that the LOS error no longer exists.; The External Synchronization Clock
B-14 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___...
Page 223 - and secondary references also apply to these references.
SYNCHRONIZATION OF DIGITAL FACILITIES B-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________...
Page 226 - NETWORK SYNCHRONIZATION AND ENGINEERING; The primary goals of network synchronization are:; Selecting a Timing Source for the Switch
B-18 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___...
Page 228 - EXAMPLE FOR RULE 1; Figure B-12. Nonpublic Network without Digital Switches
B-20 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___...
Page 229 - EXAMPLE FOR RULE 2; Figure B-13. Proper Use of Backup Facilities
SYNCHRONIZATION OF DIGITAL FACILITIES B-21 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________...
Page 230 - Figure B-14. Improper Use of Backup Facilities; record
B-22 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___...
Page 231 - EXAMPLE FOR RULE 4
SYNCHRONIZATION OF DIGITAL FACILITIES B-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________...
Page 232 - Figure B-16. Less Than Optimal Diverse Routing; EXAMPLE FOR RULE 6
B-24 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___...
Page 234 - EXAMPLE FOR RULE 7; Figure B-19. Excessive Synchronization from One Node
B-26 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___...
Page 235 - Figure B-20. Minimized Synchronization from One Node
SYNCHRONIZATION OF DIGITAL FACILITIES B-27 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________...
Page 236 - AVAILABILITY OF SYNCHRONIZATION SOURCES; AT&T communications can provide the synchronization source.; Misconception 3
B-28 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___...
Page 237 - CONCLUSIONS ON SYNCHRONIZATION
SYNCHRONIZATION OF DIGITAL FACILITIES B-29 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________...
Page 238 - USE OF GENERIC 1 AS A SYSTEM CLOCK REFERENCE
B-30 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___...
Page 241 - C. TRUNKING TERMS AND CAPABILITIES; FREQUENTLY USED TERMS; Address
C. TRUNKING TERMS AND CAPABILITIES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ _____________________________________________________________________________________...
Page 242 - Alerting Signals; Bypass Tie Trunk
C-2 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 243 - CCSA (or Common Control Switching Arrangement); PBX LC11 circuit pack may be optioned to provide DX signaling.
TRUNKING TERMS AND CAPABILITIES C-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________________...
Page 245 - Derived E&M Lead Signaling
TRUNKING TERMS AND CAPABILITIES C-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________________...
Page 246 - Direct Access
C-6 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 247 - ETN Trunking Facilities
TRUNKING TERMS AND CAPABILITIES C-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________________...
Page 248 - Glare
C-8 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________...
Page 249 - opposite for the trunk to work at all.
TRUNKING TERMS AND CAPABILITIES C-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________________...
Page 250 - 00-milliseconds——for; PBX
C-10 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________...
Page 251 - Main PBX; PBX, this term refers to the 70 series of trunk types that are; this type of signaling.
TRUNKING TERMS AND CAPABILITIES C-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________________...
Page 252 - Reverse Battery
C-12 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________...
Page 253 - Signaling Type
TRUNKING TERMS AND CAPABILITIES C-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________________...
Page 254 - For; Type of Dialing; Universal Trunk Type
C-14 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________...
Page 256 - SUGGESTIONS AND HELPFUL HINTS; Wink Start is the most frequently used start-dial signal; ground start trunk circuits do not have this requirement.; PBX and over digital facilities
C-16 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________...
Page 257 - TRUNKING CHARACTERISTICS TABLE
TRUNKING TERMS AND CAPABILITIES C-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________________...
Page 258 - DIMENSION PBX
C-18 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________...
Page 259 - Trunk class may be either PF or PFLASH.
TRUNKING TERMS AND CAPABILITIES C-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________________...
Page 260 - SWITCH A
C-20 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________...
Page 273 - D. COMMUNICATIONS PROTOCOLS; European Computer Manufacturers Association (ECMA)
D. COMMUNICATIONS PROTOCOLS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A pro...
Page 274 - OSI MODEL
D-2 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________...
Page 277 - Session Layer; Names of digital standards formulated by the CCITT start with X.; CCITT Standards
COMMUNICATIONS PROTOCOLS D-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Sess...
Page 278 - Name Title; International user classes of service in public data networks
D-6 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________...
Page 279 - International alphabet no. 5
COMMUNICATIONS PROTOCOLS D-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Tabl...
Page 281 - Other Common Standards; Layer 1 protocols include:
COMMUNICATIONS PROTOCOLS D-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Furt...
Page 282 - OSI ISO
D-10 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________...
Page 283 - Digital Multiplexed Interface; Communications System Generic 2 and System 75 and
COMMUNICATIONS PROTOCOLS D-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • T...
Page 284 - —Requires a ‘‘circuit-switched’’ transmission facility
D-12 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________...
Page 286 - Data Mode 2
D-14 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________...
Page 288 - Data Mode 3; Digital Communications Protocol
D-16 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________...
Page 289 - Table D-5. DCP versus ISDN-BRI protocol parameters comparison
COMMUNICATIONS PROTOCOLS D-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ The...
Page 290 - DCIU
D-18 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________...
Page 291 - Application Layer. This layer is named but not regulated in BX.25.
COMMUNICATIONS PROTOCOLS D-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Phy...
Page 301 - F. NETWORKING FEATURES——AVAILABILITY MATRIX
F. NETWORKING FEATURES——AVAILABILITY MATRIX _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________...
Page 303 - NETWORKING FEATURES——AVAILABILITY MATRIX (Contd)
NETWORKING FEATURES——AVAILABILITY MATRIX F-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________...
Page 307 - ABBREVIATIONS
ABBREVIATIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 4ESS number 4 elect...
Page 313 - GLOSSARY; See Automatic Call Distribution.
GLOSSARY _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 24th-channel signaling D...
Page 314 - analog
GL-2 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________________...
Page 315 - AUDIX Standalone; Communications System Generic 2 only); AVD
GLOSSARY GL-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ AUDIX Standalone An...
Page 316 - An information carrying channel on an ISDN interface.; See binary synchronous communications.
GL-4 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________________...
Page 317 - See basic rate interface.; ’e Consultatif International Telephonique et Telegraphique) an
GLOSSARY GL-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ BRI See basic rate ...
Page 318 - See 24th channel signaling.
GL-6 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________________...
Page 319 - CSU; data channel
GLOSSARY GL-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ CSU The terms chann...
Page 320 - See data communications interface unit.
GL-8 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________________...
Page 321 - See Direct Department Calling.
GLOSSARY GL-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ DDC See Direct Depa...
Page 322 - digital transmission
GL-10 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________...
Page 323 - See digital multiplexed interface with bit-oriented signaling.
GLOSSARY GL-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ direct outward dia...
Page 324 - See electronic tandem network.; A function or service provided by a hardware or software product.; See Front End Processor.
GL-12 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________...
Page 326 - Permanently connected via hardware.; See hybrid telephone.
GL-14 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________...
Page 328 - manual dialing; AT&T’s tariffed digital 800-service offering for inward calling.; modem
GL-16 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________...
Page 329 - See modular processor data module.
GLOSSARY GL-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ MPDM See modular p...
Page 330 - See Open Systems Interconnection reference model.
GL-18 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________...
Page 331 - PDM
GLOSSARY GL-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ permanent switched...
Page 332 - public network
GL-20 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________...
Page 333 - See Synchronous Data Link Control.
GLOSSARY GL-21 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ route advance A te...
Page 334 - A version of HDLC designed by IBM for use between their equipment.; See synchronous data transmission.; The switched connection of an incoming trunk to an outgoing trunk.
GL-22 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________...
Page 335 - Two copper wires used for the transmission of voice and/or data.
GLOSSARY GL-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ tip and ring Tip a...
Page 336 - WATS trunk
GL-24 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________...
Page 337 - INDEX; access trunk—Contd
INDEX _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 1 10-to-7 digit conversion ...
Page 338 - reference frequency B-28
IN-2 INDEX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________...
Page 339 - compression—Contd
INDEX IN-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ compression—Contd BCM-...
Page 340 - DMI
IN-4 INDEX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________...
Page 341 - internal dial plan—Contd
INDEX IN-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ fiber-optic transmissi...
Page 342 - multiplexing—Contd; development steps B-29
IN-6 INDEX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________...
Page 343 - network—Contd
INDEX IN-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ network—Contd synchron...
Page 345 - signaling—Contd
INDEX IN-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ signaling—Contd addres...
Page 347 - trunk—Contd; voice
INDEX IN-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ trunk—Contd 4-wire C-...
AT&T DS1/DMi/ISDN-PRI
Manual
AT&T 2320
Manual
AT&T 6800G
Manual
AT&T Cell Phone
Manual
AT&T PARTNER Plus Communications System Release 3
Manual
AT&T UVE671
Manual
AT&T TL-210 WH
Manual
AT&T 5830
Manual
AT&T E5901
Manual
AT&T E5943B
Manual
AT&T 3070
Manual
AT&T 3550
Manual
AT&T 1440
Manual
AT&T AT3101
Manual
AT&T TL96371
Manual
AT&T HS-8210
Manual
AT&T TT01
Manual
AT&T 8520T
Manual
AT&T 1722
Manual
AT&T PPC4100
Manual