At&T | AT&T DS1/DMi/ISDN-PRI instruction

	AT&T	AT&T 555-025-101
		Issue 4
		April 1990
		April 1990

® Communications

DEFINITY System

and System 75 and System 85

DS1/DMI/ISDN-PRI Reference

Image 1

AT&T DS1/DMi/ISDN-PRI manual At&T

Contents

AT&T Page Contents DS1 Transmission and Cabling Synchronization of Digital Facilities Digital Loss PlanLOSS-PLAN Implementation and Provisioning Need for Synchronization Synchronization Hierarchy Administration Options and Requirements Port TYPES/INSTALLATION Compatibilities Generic System 75 R1V2 and R1V3 Maintenance and Alarms Procedure Administrative Procedure Summary Glossary AB-1GL-1 Index List of Figures Contents Xiv Contents Procedure 012 Word 1 Name Database Generic Figure A-1 DS1 Circuit Pack Screen Bccos List of Tables User-to-User IE Opcodes Purpose About this Document Prerequisite Skills and Knowledge Intended AudiencesHOW this Document is Organized Abbreviations Glossary Index AppendixesAbout this Document Trademarks and Service Marks HOW to USE this DocumentRelated Sources AT&T HOW to Make Comments about this Document Xxiv about this Document Introduction Fundamentals of DS1 Signals 2INTRODUCTION Introduction Layer 4INTRODUCTION Megacom Introduction 6INTRODUCTION Channels 8INTRODUCTION Voice Voice-grade data Digital data Channels Channel Backup Generic Framing Formats Circuit-Switched Versus Packet-Switched ChannelsD4 Framing 10INTRODUCTION D4 Framing ESF Framing Data Link Signal Frame Sync PatternBits Robbed BIT Optional DS1 Signal, Framing Format, and ESF Superframe 24 Frames Robbed-Bit Signaling Signaling Types24th-Channel Signaling 14INTRODUCTION ESF Signaling SuperframeSuperframe Frame No Alternate Mark Inversion Line-Coding Formats16INTRODUCTION Zero Code Suppression and Bipolar with 8 Zero Substitution 1s-Density Requirement Unrestricted or Clear Channel Restricted Channel18INTRODUCTION Introduction Uncoded BIT Stream Pulse Differences Between ZCS and B8ZSViolations Based on Polarity Last 1 Transmitted Communication Protocols and 1s-Density Requirement Bipolar Violations20INTRODUCTION DMI Data Important Concepts Common-Channel SignalingAlternate Voice/Data AVD Trunks 22INTRODUCTION System 85 R2V4 Bearer Capability BC 24INTRODUCTION Generic Bccos Switch Parameter Default ValueIsdn Call Processing Outgoing Calls Summary Incoming Calls26INTRODUCTION Introduction System 85 R2V4/Generic 2 CBC Implementation CBC Service Selection28INTRODUCTION Networking Restrictions and ISDN-PRI Limitations Generic 1 Implementation 30INTRODUCTION Introduction 32INTRODUCTION Hyperactivity Network Difficulties Glare 2NETWORK Connections and Configurations DS1/DMI PRIVATE-NETWORK Connections Network Connections and ConfigurationsHost Computer to Another System 4NETWORK Connections and Configurations Other Vendor Digital Switch to Another SystemIBM Idnx Multiplexer to Another System OPS to Another System Via a D4-Channel Bank Analog Switch to Another System DS1/DMI PUBLIC-NETWORK Connections 4ESS to Another System Special-Access Connection Synchronization Screening Intra-LATA Calls5ESS to Another System Dacs to Another System 8NETWORK Connections and ConfigurationsAnalog CO to Another System Via a D4-Channel Bank CDM DS1/DMI TERMINAL-EQUIPMENT Connections CEM to a BCM32000 10NETWORK Connections and Configurations Network Connections and Configurations ISDN-PRI PRIVATE-NETWORK Connections 12NETWORK Connections and ConfigurationsSystem 85 R2 to a System 85 R2V4, Generic 1, or Generic System 85 R2V4, Generic 1, and Generic 2 to a 4ESS ISDN-PRI PUBLIC-NETWORK Connections 14NETWORK Connections and Configurations Backup D-ChannelCodeset User-to-User Information transfer Synchronization Network Specific FacilitySystem 85 R2V4, Generic 1, or Generic 2 to a Dacs System 85 or Generic 2 ISDN-PRI to a 5ESS 16NETWORK Connections and Configurations DS1 Transmission and Cabling DSX-1 Distance Limitations Metallic Cabling OptionsNetwork Channel Terminating Equipment Ncte 2DS1 Transmission and Cabling Direct Under 1310 Feet On-Premises CablingDS1 Transmission and Cabling Greater Than 4310 Feet Between 1310 and 4310 Feet4DS1 Transmission and Cabling Maximum FT or Less Off-Premises CablingMaximum DSX-1 DS1 Maximum Distance of 4311 or More 6DS1 Transmission and Cabling Nonmetallic Cabling OptionsDSX-1 T E DS1 Maximum DS1/DMI DSX-1 CEM and CDM Cabling Configurations ANY DS1 DSX-1 Channel Bank Transmission CDM DSX-1 Or D4 ChannelMedia Dedicated Channel Units Applications CDM only System 85 Traditional Modules Line Equalizer and Compensation SettingsAWG Abam & 24 AWG PDS OFF 10DS1 Transmission and Cabling Digital Loss Plan Generic LOSS-PLAN Implementation and Provisioning2THE Digital Loss Plan Digital Loss Plan Encode Loss-Plan Function ANSI/EIA/TIA-464-A-1989 Designator Digital conn Loss planLoss PORT-TO-PORT Loss Values Transmit Receive Direction Analog Facility DS1/DMI Digital Switch Channel Bank N K ONSA L Terminating a DS1 AT a Channel Bank DS1/DMI/ISDN-PRI Port LossesTie Trunk Ports CO did Trunk Ports OPS Ports 8THE Digital Loss Plan Need for Synchronization Synchronization of Digital Facilities Transmit 2SYNCHRONIZATION of Digital FacilitiesChannel Analog Bank Receive Bank Transmit Digital BIT Stream Synchronization of Digital Facilities Synchronization Hierarchy 4SYNCHRONIZATION of Digital Facilities Page 6SYNCHRONIZATION of Digital Facilities System 85 and Generic 2 Synchronization Architecture Page System 85 and Generic 2 Synchronization Software Operation Indicators Primary Secondary Reference IndicatorsBlue YEL Good LOS Misf RED System 75 and Generic 1 Synchronization Architecture System 75 and Generic 1 Synchronization Software Operation Criteria for Switching Back to the Primary Reference Criteria for Switching to the Secondary Reference 14SYNCHRONIZATION of Digital Facilities External Synchronization Clock Synchronization of Digital Facilities 16SYNCHRONIZATION of Digital Facilities External-Clock Interface Network Synchronization and Engineering Selecting a Timing Source for the Switch18SYNCHRONIZATION of Digital Facilities Rule Internal Reference Selection Rules Digital Transmission Facilities Primary Frequency Reference 20SYNCHRONIZATION of Digital Facilities 13.Proper Use of Backup Facilities Page 15.Optimal Diverse Routing 16.Less Than Optimal Diverse Routing 17.Excessive Cascading 26SYNCHRONIZATION of Digital Facilities 19.Excessive Synchronization from One Node Rules 2 Through External-Reference Selection Rules Misconception Availability of Synchronization SourcesFact 28SYNCHRONIZATION of Digital Facilities Conclusions on Synchronization Line-Only Mode DS1/DMI-BOS ANN11 or TN767USE of Generic 2 AS a System Clock Reference ISDN-PRI Trunk Facilities ANN35 or TN767 with TN755 DMI-MOS ANN35 or TN767 with TN755 Line+Trunk Mode DS1/DMI-BOS ANN35 or TN767 with TN555USE of Generic 1 AS a System Clock Reference Trunk-Mode ISDN-PRI TN767 Trunk-Mode DS1/DMI-MOS TN767 Line-Only Mode DS1/DMI-BOS TN767 32SYNCHRONIZATION of Digital Facilities Port TYPES/INSTALLATION Compatibilities FX, Wats 2PORT TYPES/INSTALLATION CompatibilitiesDMI-BOS E Port TYPES/INSTALLATION Compatibilities 4PORT TYPES/INSTALLATION Compatibilities Operating ModeGeneric 1 DS1/DMI-BOS Supported Port Types DMI Trunks Line-Only ModeGeneric 1 ISDN-PRI System 85 DS1, Traditional Modules ANN11 6PORT TYPES/INSTALLATION Compatibilities Line+Trunk Mode Port TYPES/INSTALLATION Compatibilities Others OPS Other Circuit Packs OPS PORTS/CARRIER Slot Port TYPES/INSTALLATION Compatibilities Carrier Slots P T Y 10PORT TYPES/INSTALLATION Compatibilities Line+Trunk Mode Port Grouping Rules Did Trunk DMI-BOS TrunksGround-Start CO Trunk Loop-Start CO Trunk 12PORT TYPES/INSTALLATION CompatibilitiesOf-Premises Stations Transparent Ports System 85 DS1 or DMI-MOS, Traditional Modules ANN35 Port Grouping Rules 14PORT TYPES/INSTALLATION Compatibilities Administration Options and Requirements 2ADMINISTRATION Options and Requirements Administration Options and Requirements System Procedure 275 Word 4 Isdn Service Enable/DisableSystem 85 R2V1 Through R2V4 Field Procedure 250 Word 1 DS1 Carrier Designation Procedure 276 Word 1 Other Feature Groups4ADMINISTRATION Options and Requirements System Display only Position V1-V4Module Control Procedure 260 Word 1 DS1/DMI/ISDN-PRI Physical Interface Slot numbers 0, 5, 13, or 18 for line-only operation Service or Facility OptionsCan be assigned V1-V2 V3-V4 Voice/data AVD 10ADMINISTRATION Options and Requirements System Criteria for Switching Back to the Primary Facility Criteria for Switching to the Secondary Facility 12ADMINISTRATION Options and Requirements System DS1/OPS Related Translations DS1 Channel Slot/Circuit 14ADMINISTRATION Options and Requirements System V4 Only DS1/DMI-BOS applications should be administered with aSupported. Therefore, option one is not applicable 16ADMINISTRATION Options and Requirements System Procedure 262 Word 1 Isdn Board ParametersFields PRI Parameters Field Procedure 354 Word 3 NPA-NXX Digits Assignment Enhanced Mode Procedure 354, Word NPA-NXX Assignment Procedure 000 Word 4 NPA-NXX Index Designator 20ADMINISTRATION Options and Requirements System Range of 1 through 22ADMINISTRATION Options and Requirements System Field Enhanced Mode Procedure 100, Word Trunk Group Translation 24ADMINISTRATION Options and Requirements SystemDial Access CODE/TRUNK ID Code Did Trunk Description TypeIsdn TIE Wats Administration Options and REQUIREMENT’S System Procedure 100 Word 2 Trunk Group Data Translations Modem Pooling Procedure 100 Word 3 Isdn Trunk Group Signaling OptionsData Rate Sychronous Duplex 28ADMINISTRATION Options and Requirements System Field Isdn network features is desired Field 1 Field Fields Fields 9-11 Field 32ADMINISTRATION Options and Requirements System This field is ignored by Isdn software 34ADMINISTRATION Options and Requirements System Procedure 116 Word 1 DS1/DMI/ISDN-PRI Trunk Assignments 36ADMINISTRATION Options and Requirements System DS1/ISDN-PRI Administration Channel Versus Trunk Assignments 38ADMINISTRATION Options and Requirements System Procedure 012 Word 1 Name Database Through 99999, for extension and directory numbers Procedure 012 Word 2 Name Database Enhanced Mode Procedure 012, Word Name Database Entry Procedure 012 Word 3 Name DatabaseCharater Encodes Enhanced Mode Procedure 012, Word Name Database Compaction 42ADMINISTRATION Options and Requirements System IXC Isdn Enhanced Mode Procedure 309, Word ARS Route Tables Bearer Capability 44ADMINISTRATION Options and Requirements System Network Service or Network Service/Feature Options, shows the relationshipsNetwork Feature Value Trunk Type Isdn 46ADMINISTRATION Options and Requirements System AAR System 85 R2V4, depicts the procedureEnhanced Mode Procedure 321, Word AAR Route Tables Bearer Capability NSF IXC Procedure Word FieldNSF TNS TTL Telephone Digits 23. Procedure Terminating Test Line Telephone Digits Maximum Preemption Level Administrable Alarms Administration Options and Requirements GenericGeneric Attendant Release Loop Operation SNC 52ADMINISTRATION Options and Requirements Generic Procedure 250 Word 1 SC/DS1 Carrier Designation Field Fields 54ADMINISTRATION Options and Requirements Generic SC Information Connected to CC0 ON-LINE Enter command ISDN-PRI Equipment Traditional Universal Parameter Module That Zero Code Suppression ZCS Criteria for Switching to the Secondary Criteria for Switching Back to the Primary Field 62ADMINISTRATION Options and Requirements Generic Field 133 to 90 to 266 to 180 to 399 to 270 to 532 to 360 to Distance to Midpoint Compensation Or Endpoint FT PRI and BRI Layer 2 Parameters BRI Only Depending on the particular facility NFAS-PRI Only Procedure 262 Word 2 ISDN-PRI D-Channel Backup Backup Channel Equipment Location 68ADMINISTRATION Options and Requirements GenericPrimary D-CHANNEL Equipment Location Procedure 262 Word 3 ISDN-PRI Codeset Map Assignments Performance Mapped from CODESET/INFORMATION Element Enhanced Mode Procedure 280, Word Isdn Codeset MappingMapped to CODESET/INFORMATION Element Field Field 6 Field IE Name Codeset NPA Enhanced Mode Procedure 354, WordNXX 74ADMINISTRATION Options and Requirements Generic 34.Procedure 000 Word 4 NPA-NXX Index Designator LDN Enhanced Mode Procedure 210, WordNPA-NXX Differences Between System 85 R2V4 and Generic Procedure 014 Word 1 Bccos Routing Options Call Types and Action Taken COS Default Capabilities 78ADMINISTRATION Options and Requirements Generic Procedure 014 Word 2 Bccos Data Options Or is not 0 supported 80ADMINISTRATION Options and Requirements Generic 38.Procedure 010 Word 4 Terminal COS Restrictions Generic Field Enhanced Mode Procedure 100, Word 82ADMINISTRATION Options and Requirements Generic Isdn DMI 84ADMINISTRATION Options and Requirements Generic 40. Procedure 86ADMINISTRATION Options and Requirements Generic Not applicable For Whether access to other Isdn network features is desired Assigns whether the trunk group has 1 or does not have Procedure 103 Word 1 Network Trunk Group Translations AAR/ARS Channel Versus Trunk Assignments 92ADMINISTRATION Options and Requirements Generic DS1 Channel Slot/Circuit 94ADMINISTRATION Options and Requirements Generic 45.Procedure 012 Word 1 Name Database Generic From 1 to Character Encodes 96ADMINISTRATION Options and Requirements Generic 47.Procedure 012 Word 3 Name Database Generic Field Enhanced Mode Procedure 279, Word NETWORK-SPECIFIC Facility 98ADMINISTRATION Options and Requirements GenericIsdn Network Definition Parameters 11. Network Network Parameterized Feature FacilityName Coding Value Binary 100ADMINISTRATION Options and Requirements Generic Procedure 309 Word 1 ARS Route Tables Enhanced Mode Procedure 309, Word Procedure 309 Word 5 ARS-ISDN Bccos Procedure 321 Word 1 AAR Tables Generic Services/Network Features, for the appropriate encode102ADMINISTRATION Options and Requirements Generic Enhanced Mode Procedure 321, Word 104ADMINISTRATION Options and Requirements Generic Procedure 321 Word 5 AAR-ISDN and Other Feature Parameters 53.Procedure 107 Word 1 Atms TTL Assignment System 85 R2V4 106ADMINISTRATION Options and Requirements Generic Procedure 108 Word 1 Isdn Trunk Group TTL Number Digits DMI-BOS? Maintenance Parameters Service/Facility OptionsSystem 75 R1V2 and R1V3 DS1 Circuit Pack Compensation Value Distance Feet 108ADMINISTRATION Options and Requirements System 109 Detection SlipRemote Loop DS1 Circuit Packs Synchronization Plan Trunk Group/Trunk Group Members 112ADMINISTRATION Options and Requirements System Port DelayName Mode Call 114ADMINISTRATION Options and Requirements SystemACA AAR/ARS 116ADMINISTRATION Options and Requirements Generic 60.DS1 Circuit Pack Screen, Common-Channel Signaling Line Location 118ADINISTRATION Options and Requirements Generic Interface 120ADMINISTRATION Options and Requirements Generic Call COR Trunk Group/Trunk Group Members DS1 Trunk ApplicationsSTT DTT BCC 122ADMINISTRATION Options and Requirements GenericAvd or data In/out PBX ID Trunk Group ACA Night With auto ModeProcessor Interface Data Module ISDN-PRI Applications Physical Data ExtensionChannel Processor Channel Assignments ISDN-PRI Applications Appl Proc ChanLink Chan Priority DTE/DCE Trunking Considerations ISDN-PRI Applications 128ADMINISTRATION Options and Requirements GenericAdvantages of CBC Trunking Either a feature 0, or service FeatureNetwork Facilities ISDN-PRI Applications NETWORK-FACILITIES Trunk Group ISDN-PRI Trunk Applications CodingCOR TAC Service Dial AccessService Type Options access, tie Display/TCM SendMax Message Size SID? Trunk FeaturesSID/ANI 134ADMINISTRATION Options and Requirements Generic Application Example #1 DelApplication Example #2 Per Call InsertSID/ANI Case Application for Case 2 being selected Application for Case 1 being selected most restrictiveApplication for Case 3 being selected Application for Case 4 being selected 138ADMINISTRATION Options and Requirements Generic Example Screen Entries for Cases Applications for CasesTrunk Group Usage Allocation ISDN-PRI Applications PBX Usage 140ADMINISTRATION Options and Requirements GenericAllocation Plan An Example Application for Usage Allocation Plans Min# Chan Max# Chan Fixed 142ADMINISTRATION Options and Requirements GenericNumber Scheduled CBC Trunk Group Usage Allocation Plan Assignment Schedule 75.Trunk Group Screen, Page 5 ISDN-PRI Trunk Group Member Assignments ISDN-PRI Trunk Applications Name Night 144ADMINISTRATION Options and Requirements GenericSID Prefix Table ISDN-PRI Applications SID Prefix SID Prefix Ext CodeAn Example Application that uses SID Routing Patterns ISDN-PRI Applications 146ADMINISTRATION Options and Requirements Generic Number PatternGrp No FRL No. Del 148ADMINISTRATION Options and Requirements GenericDigits Inserted Hunt Group ISDN-PRI Applications Band Terminating Extension Group ISDN-PRI Applications 150ADMINISTRATION Options and Requirements GenericHunt Group ACD? Terminating Extension Group 152ADMINISTRATION Options and Requirements Generic Generic 2 Maintenance Capabilities and Concerns Generic 1 and Generic 2 ISDN-PRI Maintenance Philosophy 2MAINTENANCE and Alarms Generic 2 Maintenance Procedures Maintenance and Alarms 4MAINTENANCE and Alarms Summary of Generic 2 Maintenance Capabilities Generic 1 Maintenance Procedures Generic 1 Maintenance Capabilities and Concerns6MAINTENANCE and Alarms Alarms Summary of Generic 1 Maintenance CapabilitiesCircuit Pack Alarms Yellow LED Excessive Misframe and CRC Errors Facility AlarmsLFA Alarm 8MAINTENANCE and Alarms Loss of Signal Alarm Remote Frame Alarm Major and Minor Alarms Blue AlarmFraming Mode Alarm Type Conversion 10MAINTENANCE and Alarms Administration Requirements Megacom COR 2ADMINISTRATION RequirementsPBX ID ACA Administration Requirements 4ADMINISTRATION Requirements DCS? PBX ID Figure A-5.Trunk Group Screen, Page 1 SDN Facilities, for details 6ADMINISTRATION Requirements Dacs TRANSLATIONS-BASED Problems Transmission Facility 2SAMPLE Installation and Maintenance Problems Trunks and Trunk Groups Sample Installation and Maintenance Problems Type 4SAMPLE Installation and Maintenance Problems CEMs CDMsSystem DS1 or DMI 6SAMPLE Installation and Maintenance Problems D4-Channel Banks Sample Installation Maintenance Problems 8SAMPLE Installation and Maintenance Problems SYNCHRONIZATION-RELATED Problems Leavenworth Loop Loss of or No Synchronization Figure B-10.Leavenworth Loop on the Primary Reference D4 Synchronization Problems Sample Installation and Maintenance Problems 12SAMPLE Installation and Maintenance Problems Digital CO Synchronization ProblemsDacs Figure B-15.Synchronization from Dacs Node Typical Physical Interface Connection Problems Initial System 85 DS1 or DMI Pinout for 50-PIN Connector 14SAMPLE Installation and Maintenance Problems CABLE/CONNECTORS Initial or OLD PDS Compatible System Installation Maintenance ProblemsC6C To WIRE-LUGS System Intracabinet 16SAMPLE Installation and Maintenance Problems Specific Cabling Options Permitted Cabling Combinations 18SAMPLE Installation and Maintenance Problems Using cable GR-380 Permitted Cabling Combinations Using PDS 20SAMPLE Installation and Maintenance Problems Permitted Cabling Combinations Using PDS 22SAMPLE Installation and Maintenance Problems Voice Procedure 000 Word 3 Generic 2 Only 2ADMINISTRATIVE Procedure Summary Mode Voice Grade Data Unknown Digital Analog Mode 3/2 Procedure 010 Word 4 System 85 R2V4 & Generic Procedure 000 Word 4 System 85 R2V4 & GenericAdministrative Procedure Summary Isdn Routing Parameters System 85 R2V4 & Generic BC System 85 R2V4 Only 4ADMINISTRATIVE Procedure SummaryVoice or Voice Grade Data Procedure 100 Word 1 System 85 R2V4 & Generic Procedure 012 System 85 R2V4 & Generic 6ADMINSTRATIVE Procedure Summary Procedure 100 Word 2 Generic 2 OnlyRules for Trunk Type 120 System 85 R2V4 & Generic Procedure Procedure 100 Word 3 System 85 R2V4 & GenericTCM 8ADMINISTRATIVE Procedure Summary Procedure 107 Word 1 System 85 R2V4 & GenericCalled-Party Number IE System 85 R2V4 & Generic For international calls that is, a dial Calls For ARS calls Procedure 116 Word 1 System 85 R2V4 & Generic Procedure 108 Word 1 System 85 R2V4 & GenericProcedure 210 Word 2 System 85 R2V4 & Generic Procedure 260 Word 1 System 85 R2V4 & Generic 10ADMINISTRATIVE Procedure Summary Procedure 275 Word 4 System 85 R2V4 & Generic Procedure 262 Word 3 Generic 2 OnlyProcedure 279 Word 1 Generic 2 Only Procedure 280 Word 1 Generic 2 Only IE Opcode Value 12ADMINISTRATIVE Procedure SummaryInformation Element IE Name R2V4 Information Element IE Name Opcode Value Field 5, Network Service Value Procedure 309 Word 5 System 85 R2V4 & GenericField 4, Isdn Trunk Type NSF IE System 85 R2V4 14ADMINISTRATIVE Procedure SummaryThrough 288 Outwats Band NSFs SDN NSF Megacom NSF NSF IE Generic Wats NSF Accunet via encode BC System 85 R2V4 and Generic 16ADMINISTRATIVE Procedure SummaryFields 6-10 System 85 R2V4 Procedure 354 Word 3 System 85 R2V4 & Generic Procedure 321 Word 5 System 85 R2V4 & GenericField 6 Generic 18ADMINISTRATIVE Procedure Summary Procedure 420 System 85 R2V4 & Generic Administrative Procedure Summary 20ADMINISTRATIVE Procedure Summary Trunk/Signaling Cross-references Trunk Type and Signaling Type Compatibility Tables Aplt 2TRUNK Type and Signaling Type Compatibility Tables Wats Trunk Type and Signaling Type Compatibility TablesDid TIE MAIN/SAT CAS ISDN/PRI NDM-I Trunk 6TRUNK Type and Signaling Type Compatibility TablesEQU R2V4 G2 Equiv Type Sig. Type Trunk Type and Signaling Type Compatibility Tables ANN11 8TRUNK Type and Signaling Type Compatibility Tables S BC BCC Bccos bps AAR F T C Afrl Aiod ALU ANI ARS Autovon AVD AWGCBC Ccitt CCR Ccsa CDM CEM COR COS CRC CSU AB-2ABBREVIATIONS Dacs dB Abbreviations AB-3 AB-4ABBREVIATIONS Adftc Afrl Aiod AccunetMegacom Tandem Data transmissionGL-2GLOSSARY B8ZS AWG Parameterized service format Binary serviceBit error rate Burstiness Ports, packet switching, Glossary GL-5 See network channel-terminating equipment Unrestricted digital data Cross couplingQ.931 See cyclic redundancy check DTE Dnis DMI-MOSDS1 EIA GL-9ETN Epscs Hdlc GRS Inads Isdn network- See Isdn network identifier. service value See Integrated Services Digital NetworkClock reference GL-12GLOSSARY Isdn SID-ANI Lata LFA Loss of signalStation identification number See loss of frame alignment Ncte Mpdm Digital Network primary rate interface OPS OPXNetwork primary rate interface Glossary GL-15 PAM PC/PBX PADPCM PDM PDS PRI PCM PAM See remote frame alarm See Remote Group Robbed-bit signalingSDN See Software Defined Network SS7 Multiplexed switch Switch TMSSee time-multiplexed switch Transport mode ZCS Zero code Accunet 6-3,C-16code Network 7-84,7-88nodal servicesEqual 7-43,7-47,7-101,7-103ISDN Adftc BC 1-22,C-16 BC code 7-23,7-81 AVD 1-22,7-9Bccos 1-24,C-1 Violation 1-18,1-20,3-3 CEM Ccitt9bank D4 1-1,2-5D-type1-1 9delta CRC 1-12,1-14CRV CSU xix, 1-20,3-2customer COR 7-112,7-125,A-2DCE 1-21,7-127D-channel BOS NPA-NXX7-28,7-72I -Contd BOS-Contd Index IN-5 DS1- Contd IN-6 IndexDTE 2-18 EIA FXS D4 1-10,2-5,2-7Index IN-7 Lapd 1-3,7-17LATA 2-7layer 1 1-3layer 2 IN-8 IndexLEC Voice 1-23,7-33voice-grade data 1-23,1-24ZCS Misframe 1-11,1-14MOCDM Index IN-9 Ncte IN-10 IndexNPA-NNX C-17 Ports 4-7,6-6 OPSPCM 1-8,5-1PCM data Channel1-5,1-9,7-57facility 7-11,7-59 RNX 1-27robbed-bit signaling 9sources SS7 7-30,7-88Index IN-13 CEM 2-10terminating IN-14 IndexTMS FX 2-8,7-13ground-start CO 6-11group CO 2-8,7-13combination tie 2-5,6-4DID 6-11,7-13Members 7-35,7-92Generic 1 108 IN-16 Index