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AT&T
AT&T 555-025-101
Issue 4
April 1990
DEFINITY
®
Communications
System
and System 75 and System 85
DS1/DMI/ISDN-PRI Reference
NOTICE
While reasonable efforts were made to ensure that the information
in this document was complete and accurate at the time of printing,
AT&T can assume no responsibility for any errors.
Changes or corrections to the information contained in this
document may be incorporated into future issues.
Prepared by
AT&T Technical Publications Department
Denver, Colorado
Copyright © 1990 AT&T
All Rights Reserved
Printed in USA
CONTENTS
ABOUT THIS DOCUMENT
PURPOSE
INTENDED AUDIENCES
PREREQUISITE SKILLS AND KNOWLEDGE
HOW THIS DOCUMENT IS ORGANIZED
HOW TO USE THIS DOCUMENT
TRADEMARKS AND SERVICE MARKS
RELATED SOURCES
HOW TO MAKE COMMENTS ABOUT THIS DOCUMENT
1. INTRODUCTION
FUNDAMENTALS OF DS1 SIGNALS
Channels
Framing Formats
Signaling Types
Line-Coding Formats
IMPORTANT CONCEPTS
Common-Channel Signaling
Alternate Voice/Data (AVD) Trunks
Bearer Capability (BC)
ISDN Call Processing
CBC Service Selection
Networking Restrictions and ISDN-PRI Limitations
2. NETWORK CONNECTIONS AND CONFIGURATIONS
NETWORK DIFFICULTIES
Hyperactivity
Glare
xix
xix
xx
xx
xx
xxii
xxii
xxii
xxiii
1-1
1-1
1-7
1-10
1-14
1-16
1-22
1-22
1-22
1-23
1-25
1-28
1-29
2-1
2-1
2-1
2-2
iii
iv CONTENTS
DS1/DMI PRIVATE-NETWORK CONNECTIONS
Generic 1, Generic 2, System 75, or System 85 to Another System
Host Computer to Another System
IBM
®
IDNX Multiplexer to Another System
Other Vendor Digital Switch to Another System
Analog Switch to Another System
OPS to Another System Via a D4-Channel Bank
DS1/DMI PUBLIC-NETWORK CONNECTIONS
4ESS to Another System (Special-Access Connection)
5ESS to Another System
DACS to Another System
Analog CO to Another System Via a D4-Channel Bank
DS1/DMI TERMINAL-EQUIPMENT CONNECTIONS
CDM
CEM to a BCM32000
ISDN-PRI PRIVATE-NETWORK CONNECTIONS
System 85 R2 to a System 85 R2V4, Generic 1, or Generic 2
System 85 or Generic 2 ISDN-PRI to Another Vendor’s Digital Switch
ISDN-PRI PUBLIC-NETWORK CONNECTIONS
System 85 R2V4, Generic 1, and Generic 2 to a 4ESS
Synchronization
System 85 R2V4, Generic 1, or Generic 2 to a DACS
System 85 or Generic 2 ISDN-PRI to a 5ESS
3. DS1 TRANSMISSION AND CABLING
METALLIC CABLING OPTIONS
DSX-1 Distance Limitations
Network Channel Terminating Equipment (NCTE)
On-Premises Cabling
Off-Premises Cabling
NONMETALLIC CABLING OPTIONS
CEM AND CDM CABLING CONFIGURATIONS
LINE EQUALIZER AND COMPENSATION SETTINGS
2-3
2-3
2-3
2-4
2-4
2-5
2-5
2-6
2-6
2-7
2-8
2-8
2-9
2-9
2-10
2-12
2-12
2-13
2-13
2-13
2-15
2-15
2-15
3-1
3-2
3-2
3-2
3-3
3-5
3-6
3-7
3-9
CONTENTS
v
System 85 Traditional Modules
3-9
Generic 1 and Generic 2 Universal Modules
3-9
4. THE DIGITAL LOSS PLAN
LOSS-PLAN IMPLEMENTATION AND PROVISIONING
Generic 2
Generic 1
PORT-TO-PORT LOSS VALUES
DS1/DMI/ISDN-PRI PORT LOSSES
TERMINATING A DS1 AT A CHANNEL BANK
Tie Trunk Ports
CO DID Trunk Ports
OPS Ports
5. SYNCHRONIZATION OF DIGITAL FACILITIES
THE NEED FOR SYNCHRONIZATION
SYNCHRONIZATION HIERARCHY
System 85 and Generic 2 Synchronization Architecture
System 85 and Generic 2 Synchronization Software Operation
CHANGES TO THE SCS SOFTWARE MADE AVAILABLE VIA SOFTWARE PATCHES
System 75 and Generic 1 Synchronization Architecture
System 75 and Generic 1 Synchronization Software Operation
The External Synchronization Clock
NETWORK SYNCHRONIZATION AND ENGINEERING
Selecting a Timing Source for the Switch
Internal Reference Selection Rules
External-Reference Selection Rules
AVAILABILITY OF SYNCHRONIZATION SOURCES
CONCLUSIONS ON SYNCHRONIZATION
USE OF GENERIC 2 AS A SYSTEM CLOCK REFERENCE
ISDN-PRI Trunk Facilities (ANN35 or TN767 with TN755)
Line-Only Mode DS1/DMI-BOS (ANN11_ or TN767)
4-1
4-2
4-2
4-3
4-4
4-6
4-6
4-6
4-6
4-7
5-1
5-1
5-3
5-7
5-9
5-11
5-11
5-12
5-14
5-18
5-18
5-19
5-27
5-28
5-29
5-29
5-29
5-29
vi
CONTENTS
Line+Trunk Mode DS1/DMI-BOS (ANN35 or TN767 with TN555)
5-30
DMI-MOS (ANN35 or TN767 with TN755)
5-30
USE OF GENERIC 1 AS A SYSTEM CLOCK REFERENCE
5-30
Trunk-Mode ISDN-PRI (TN767)
5-30
Trunk-Mode Interface (ISDN-PRI + Robbed Bit) (TN767)
5-30
Line-Only Mode DS1/DMI-BOS (TN767)
5-31
Trunk-Mode DS1/DMI-MOS (TN767)
5-31
6. PORT TYPES/INSTALLATION COMPATIBILITIES
GENERIC 1 DS1/DMI-BOS
Operating Mode
Supported Port Types
GENERIC 1 ISDN-PRI
SYSTEM 85 DS1, TRADITIONAL MODULES (ANN11)
Operating Modes
Line+Trunk Mode Port Grouping Rules
Supported Port Types
SYSTEM 85 DS1 OR DMI-MOS, TRADITIONAL MODULES (ANN35)
Operating Mode
Port Grouping Rules
Supported Port Types
7. ADMINISTRATION OPTIONS AND REQUIREMENTS
SYSTEM 85 (R2V1 THROUGH R2V4)
Procedure 275 Word 4:
Procedure 276 Word 1:
Procedure 250 Word 1:
Procedure 260 Word 1:
Procedure 262 Word 1:
Procedure 354 Word 3:
Procedure 000 Word 4:
Procedure 210 Word 2:
ISDN Service — Enable/Disable
Other Feature Groups
DS1 — Carrier Designation
DS1/DMI/ISDN-PRI Physical Interface
ISDN Board Parameters
NPA-NXX Digits Assignment
NPA-NXX Index Designator
LDN, NPA, and NNX Attendant Partition Assignments
6-1
6-4
6-4
6-4
6-5
6-5
6-5
6-10
6-10
6-13
6-13
6-14
6-14
7-1
7-3
7-3
7-4
7-4
7-6
7-16
7-18
7-19
7-20
CONTENTS
vii
Procedure 010 Word 4:
Procedure 100 Word 1:
Procedure 100 Word 2:
Procedure 100 Word 3:
Procedure 101 Word 1:
Procedure 103 Word 1:
Procedure 116 Word 1:
Procedure 107 Word 1:
Procedure 108 Word 1:
GENERIC 2
Line Side (B-Channel) BC and ISDN Routing Options
Trunk Group Type, Signaling, and Dial Access (ID) Code
Trunk Group Data Translations
ISDN Trunk Group Signaling Options
ISDN Trunk Group, SMDR, Digital Loss Plan, and AVD Assignments
Trunk Group Digit Collection and Trunk-Side BC
DS1/DMI/ISDN-PRI Trunk Assignments
Name Database
Name Database
Name Database
ARS Assignments and IXC/ISDN Network Identifier
ARS and ISDN Trunk — Network Characteristics
AAR Assignments and IXC/ISDN Network Identifier
AAR and ISDN Trunk — Network Characteristics
ISDN Trunk Verification by Terminal, Attendant, and ATMS
ISDN Trunk Group Terminating Test Line Number (Digits)
ISDN Service — Enable/Disable
Other Feature Groups
SC/DS1 — Carrier Designation
DS1/DM1/ISDN-PRI Physical Interface
Additional DMI-MOS/ISDN-PRI Facility Options
ISDN-PRI D-Channel Backup
ISDN-PRI Codeset Map Assignments
ISDN-PRI Receive/Transmit Codeset Mapping
NPA-NXX Digits Assignment
NPA-NXX Index Designator
LDN, NPA, and NNX Attendant Partition Assignments
BCCOS Routing Options
BCCOS Data Options
Line Side (B-Channel) BC and ISDN Routing Options
Trunk Group Type Signaling and Dial Access (ID) Code
Trunk Group Data Translations
ISDN Trunk Group Signaling Options
Procedure 012 Word 1:
Procedure 012 Word 2:
Procedure 012 Word 3:
Procedure 309 Word 1:
Procedure 309 Word 5:
Procedure 321 Word 1:
Procedure 321 Word 5:
7-22
7-23
7-26
7-27
7-30
7-33
7-35
7-38
7-40
7-41
7-42
7-44
7-46
7-47
7-48
7-49
7-51
Procedure 275 Word 4:
Procedure 276 Word 1:
Procedure 250 Word 1:
Procedure 260 Word 1:
Procedure 262 Word 1:
Procedure 262 Word 2:
Procedure 262 Word 3:
7-51
7-52
7-53
7-54
7-65
7-67
7-69
Procedure 280 Word 1:
Procedure 354 Word 3:
Procedure 000 Word 4:
Procedure 210 Word 2:
Procedure 014 Word 1:
Procedure 014 Word 2:
Procedure 010 Word 4:
Procedure 100 Word 1:
7-71
7-72
7-74
7-75
7-76
7-78
7-80
7-81
7-84
Procedure 100 Word 2:
Procedure 100 Word 3:
7-86
viii
CONTENTS
Procedure 101 Word 1:
Procedure 103 Word 1:
Procedure 116 Word 1:
Procedure 012 Word 1:
Procedure 012 Word 2:
Procedure 012 Word 3:
Procedure 279 Word 1:
Procedure 309 Word 1:
Procedure 309 Word 5:
Procedure 321 Word 1:
Procedure 321 Word 5:
Procedure 107 Word 1:
Procedure 108 Word 1:
ISDN Trunk Group, CDR, and Digital Loss Plan
Network Trunk Group Translations
DS1/DMI/ISDN-PRI Trunk Assignments
Name Database
Name Database
Name Database
Network Facilities Coding
ARS Route Tables
ARS–ISDN BCCOS
AAR Tables (Generic 2)
AAR–ISDN and Other Feature Parameters
ISDN Trunk Verification by Terminal, Attendant, and ATMS
ISDN Trunk Group TTL Number (Digits)
SYSTEM 75 (R1V2 AND R1V3)
Network Synchronization Options
Trunk Group/Trunk Group Members
GENERIC 1
Network Synchronization Options — DS1 and ISDN-PRI Applications
Trunk Group/Trunk Group Members — DS1 Trunk Applications
Processor Interface Data Module — ISDN-PRI Applications
Processor Channel Assignments — ISDN-PRI Applications
Interface Links — ISDN-PRI Applications
Trunking Considerations — ISDN-PRI Applications
Network Facilities — ISDN-PRI Applications
Trunk Group — ISDN-PRI Trunk Applications
Trunk Group Usage Allocation — ISDN-PRI Applications
Usage Allocation Plan Assignment Schedule — ISDN-PRI Applications
Trunk Group Member Assignments — ISDN-PRI Trunk Applications
SID Prefix Table — ISDN-PRI Applications
Routing Patterns — ISDN-PRI Applications
Hunt Group — ISDN-PRI Applications
Terminating Extension Group — ISDN-PRI Applications
7-88
7-90
7-92
7-94
7-95
7-96
7-97
7-100
7-101
7-102
7-104
7-105
7-106
7-107
7-110
7-112
7-115
7-119
7-121
7-124
7-125
7-126
7-128
7-129
7-130
7-139
7-141
7-143
7-144
7-146
7-149
7-150
CONTENTS
ix
8. MAINTENANCE AND ALARMS
GENERIC 1 AND GENERIC 2 ISDN-PRI MAINTENANCE PHILOSOPHY
GENERIC 2 MAINTENANCE CAPABILITIES AND CONCERNS
Generic 2 Maintenance Procedures
Summary of Generic 2 Maintenance Capabilities
GENERIC 1 MAINTENANCE CAPABILITIES AND CONCERNS
Generic 1 Maintenance Procedures
Summary of Generic 1 Maintenance Capabilities
ALARMS
Circuit Pack Alarms
Facility Alarms
A. ADMINISTRATION REQUIREMENTS
B. SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS
TRANSLATIONS-BASED PROBLEMS
TRUNKS AND TRUNK GROUPS
CDMs
CEMs
D4-Channel Banks
SYNCHRONIZATION-RELATED PROBLEMS
Loss of or No Synchronization
Leavenworth Loop
D4 Synchronization Problems
Digital CO Synchronization Problems
DACS
TYPICAL PHYSICAL INTERFACE CONNECTION PROBLEMS
Specific Cabling Options
System 85 DS1/DMI to System 85 DS1/DMI — Colocated Arrangement
System 85 DS1/DMI to System 75 DS1/DMI — Colocated Arrangement
System 85 DMI to Host Computer
System 85 DS1/DMI Direct to a NCTE
8-1
8-1
8-1
8-2
8-5
8-6
8-6
8-7
8-7
8-7
8-8
A-1
B-1
B-1
B-3
B-5
B-5
B-7
B-8
B-9
B-9
B-10
B-12
B-12
B-13
B-17
B-18
B-20
B-21
B-22
x
CONTENTS
System 85 DS1/DMI-BOS to a CEM or CDM
C. ADMINISTRATIVE PROCEDURE SUMMARY
PROCEDURE 000 WORD 3 (Generic 2 Only)
PROCEDURE 000 WORD 4 (System 85 R2V4 & Generic 2)
PROCEDURE 010 WORD 4 (System 85 R2V4 & Generic 2)
ISDN Routing Parameters (System 85 R2V4 & Generic 2)
BC (System 85 R2V4 Only)
PROCEDURE 012 (System 85 R2V4 & Generic 2)
PROCEDURE 100 WORD 1 (System 85 R2V4 & Generic 2)
PROCEDURE 100 WORD 2 (Generic 2 Only)
PROCEDURE 100 WORD 3 (System 85 R2V4 & Generic 2)
PROCEDURE 103
PROCEDURE 107 WORD 1 (System 85 R2V4 & Generic 2)
PROCEDURE 108 WORD 1 (System 85 R2V4 & Generic 2)
PROCEDURE 116 WORD 1 (System 85 R2V4 & Generic 2)
PROCEDURE 210 WORD 2 (System 85 R2V4 & Generic 2)
PROCEDURE 260 WORD 1 (System 85 R2V4 & Generic 2)
PROCEDURE 262 WORD 1 (System 85 R2V4 & Generic 2)
PROCEDURE 262 WORD 3 (Generic 2 Only)
PROCEDURE 275 WORD 4 (System 85 R2V4 & Generic 2)
PROCEDURE 279 WORD 1 (Generic 2 Only)
PROCEDURE 280 WORD 1 (Generic 2 Only)
PROCEDURE 309 WORD 5 (System 85 R2V4 & Generic 2)
Field 4, ISDN Trunk Type
Field 5, Network Service Value
BC (System 85 R2V4 and Generic 2)
PROCEDURE 321 WORD 5 (System 85 R2V4 & Generic 2)
PROCEDURE 354 WORD 3 (System 85 R2V4 & Generic 2)
PROCEDURE 420 (System 85 R2V4 & Generic 2)
B-22
C-1
C-1
C-3
C-3
C-3
C-4
C-5
C-5
C-6
C-7
C-7
C-8
C-9
C-9
C-9
C-9
C-9
C-11
C-11
C-11
C-11
C-13
C-13
C-13
C-16
C-17
C-17
C-18
xii
CONTENTS
LIST OF FIGURES
Figure 1-1.
Figure 1-2.
Figure 1-3.
Figure 1-4.
Figure 1-5.
Figure 1-6.
Figure 1-7.
System 85 R2V4 ISDN Configuration
Generic 2 ISDN Network Configuration
Generic 1 ISDN Network Configuration
D4 Framing
DS1 Extended Superframe Format
DS1 Signal, Framing Format, and ESF Superframe (24 Frames)
Alternate Mark Inversion
Example of B8ZS Line Coding
ISDN Message Signaling Format
On-Premises Metallic-Cable Configurations
Off-Premises Metallic Cable Configuration
Nonmetallic Cabling Configurations
CEM and CDM Cable Configurations
End-to-End Loss Configuration Using Combination Tie Trunks
Figure 1-8.
Figure 1-9.
Figure 3-1.
Figure 3-2.
Figure 3-3.
Figure 3-4.
Figure 4-1.
Figure 5-1.
Figure 5-2.
Figure 5-3.
Figure 5-4.
Figure 5-5.
Options for Synchronization
Synchronization Hierarchy
Stratum Levels for the Synchronization Hierarchy
SCS (Generic 2)
Duplicated Synchronization Architecture and Cross Coupling
Tone-Clock Synchronizer (Nonduplicated, Generic 1)
Public-Network External Clock
External Clock
External-Clock Interface
External-Clock Duplicated Synchronization
External and Internal Reference Levels
Nonpublic Network without Digital Switches
Proper Use of Backup Facilities
Improper Use of Backup Facilities
Optimal Diverse Routing
Less Than Optimal Diverse Routing
1-5
1-6
1-7
1-11
1-12
1-13
1-17
1-19
1-26
3-5
3-6
3-7
3-8
4-5
5-2
5-5
5-7
5-8
5-9
5-12
5-15
5-16
5-17
5-17
5-19
5-20
5-21
5-22
5-23
5-24
Figure 5-6.
Figure 5-7.
Figure 5-8.
Figure 5-9.
Figure 5-10.
Figure 5-11.
Figure 5-12.
Figure 5-13.
Figure 5-14.
Figure 5-15.
Figure 5-16.
CONTENTS
xiii
Figure 5-17.
Figure 5-18.
Figure 5-19.
Figure 5-20.
Figure 6-1.
Figure 6-2.
Figure 7-1.
Figure 7-2.
Figure 7-3.
Figure 7-4.
Figure 7-5.
Figure 7-6.
Figure 7-7.
Figure 7-8.
Figure 7-9.
Figure 7-10.
Figure 7-11.
Figure 7-12.
Figure 7-13.
Figure 7-14.
Figure 7-15.
Figure 7-16.
Figure 7-17.
Figure 7-18.
Figure 7-19.
Excessive Cascading
Minimized Cascading
Excessive Synchronization from One Node
Minimized Synchronization from One Node
Physical and Virtual Carrier Slot Relationships, Line-Only Mode
Physical and Virtual Carrier Slot Relationships, Line+Trunk Mode
Procedure 275 Word 4:
(System 85 R2V4)
Procedure 276 Word 1:
Procedure 250 Word 1:
R2V4)
Procedure 260 Word 1:
(System 85 R2V4)
Procedure 262 Word 1:
Procedure 354 Word 3:
Procedure 000 Word 4:
R2V4)
Procedure 210 Word 2:
R2V4)
Procedure 010 Word 4:
R2V4)
Procedure 100 Word 1:
Procedure 100 Word 2:
R2V4)
Procedure 100 Word 3:
Translations (System 85
Procedure 101 Word 1:
R2V4)
Procedure 103 Word 1:
R2V4)
Procedure 116 Word 1:
System COS and Miscellaneous Service Assignments
Feature Group COS (System 85 R2V4)
System Configuration, Carriers (System 85
System Configuration, Circuit Pack Assignments
ISDN Board Parameters
NPA–NXX Assignment (System 85 R2V4)
NPA–NXX/Partition Assignment (System 85
Attendant Partition Assignments (System 85
Terminal COS Restrictions (System 85
Trunk Group Translations (System 85 R2V4)
Trunk Group Data Characteristics (System 85
Trunk Group/Trunk Type — Signaling Type
R2V4)
Additional Trunk Group Translations (System 85
Network Trunk Group Translations (System 85
DS1 Trunk Assignments to Equipment/Circuit
Location (System 85 R2V4)
Procedure 012 Word 1:
R2V4)
Procedure 012 Word 2:
Procedure 012 Word 3:
Procedure 309 Word 1:
Name Database Establish Key (System 85
Name Database Entry (System 85 R2V4)
Name Database (System 85 R2V4)
ARS (System 85 R2V4)
5-25
5-25
5-26
5-27
6-8
6-9
7-3
7-4
7-5
7-7
7-16
7-19
7-20
7-21
7-22
7-24
7-27
7-28
7-31
7-34
7-36
7-39
7-41
7-42
7-43
xiv
CONTENTS
Figure 7-20.
Figure 7-21.
Figure 7-22.
Figure 7-23.
Figure 7-24.
Figure 7-25.
Figure 7-26.
Figure 7-27.
Figure 7-28.
Figure 7-29.
Figure 7-30.
Figure 7-31.
Figure 7-32.
Figure 7-33.
Figure 7-34.
Figure 7-35.
Procedure 309 Word 5: ARS and Transit Network Identifiers (System 85
R2V4)
Procedure 321 Word 1: AAR (System 85 R2V4)
Procedure 321 Word 5: AAR and Transit Network Identifiers (System 85
R2V4)
Procedure 107 Word 1: ATMS Terminating Test Line Assignment (System
85 R2V4)
Procedure 108 Word 1: ISDN Terminating Test Line Assignments (System 85
R2V4)
Procedure 275 Word 4: System COS and Miscellaneous Service Assignments
(Generic 2)
Procedure 276 Word 1: Feature Group COS (Generic 2)
Procedure 250 Word 1: System Configuration — Carriers (Generic 2)
Procedure 260 Word 1: Additional DMI-MOS/ISDN-PRI Circuit Pack
Assignments (Generic 2)
Procedure 262 Word 1: Additional DMI-MOS/ISDN-PRI Facility Options
(Generic 2)
Procedure 262 Word 2: ISDN-PRI D-Channel Backup (Generic 2)
Procedure 262 Word 3: ISDN-PRI Codeset Map Assignments (Generic
2)
Procedure 280 Word 1: ISDN-PRI Receive/Transmit Codeset Mapping
(Generic 2)
Procedure 354 Word 3: NPA-NXX Digits Assignment (Generic 2)
Procedure 000 Word 4: NPA-NXX Index Designator
Procedure 210 Word 2: LDN, NPA, and NNX Attendant Partition
Assignments
Procedure 014 Word 1: BCCOS Routing Options
Procedure 014 Word 2: BCCOS Data Options
Procedure 010 Word 4: Terminal COS Restrictions (Generic 2)
Procedure 100 Word 1: Trunk Group Type Signaling and Dial Access (ID)
Code (Generic 2)
Procedure 100 Word 2: Trunk Group Data Translations (Generic 2)
Procedure 100 Word 3: ISDN Trunk Group Signaling Options (Generic
2)
Procedure 101 Word 1: ISDN Trunk Group, CDR, and Digital Loss Plan
(Generic 2)
Procedure 103 Word 1: Network Trunk Group Translations (Generic
2)
7-44
7-46
7-47
7-49
7-50
7-51
7-52
7-53
7-55
7-65
7-68
7-69
7-71
7-73
7-74
7-75
7-77
7-79
7-80
7-82
7-85
7-86
7-89
7-91
Figure 7-36.
Figure 7-37.
Figure 7-38.
Figure 7-39.
Figure 7-40.
Figure 7-41.
Figure 7-42.
Figure 7-43.
CONTENTS xv
Figure 7-44.
Figure 7-45.
Figure 7-46.
Figure 7-47.
Figure 7-48.
Figure 7-49.
Figure 7-50.
Figure 7-51.
Figure 7-52.
Figure 7-53.
Figure 7-54.
Figure 7-55.
Figure 7-56.
Figure 7-57.
Figure 7-58.
Figure 7-59.
Figure 7-60.
Figure 7-61.
Figure 7-62.
Figure 7-63.
Procedure 116 Word 1: DS1/DMI/ISDN-PRI Trunk Assignments (Generic
2)
Procedure 012 Word 1: Name Database (Generic 2)
Procedure 012 Word 2: Name Database (Generic 2)
Procedure 012 Word 3: Name Database (Generic 2)
Procedure 279 Word 1: Network Facilities Coding (Generic 2)
Procedure 309 Word 1: ARS Route Tables (Generic 2)
Procedure 309 Word 5: ARS-ISDN BCCOS (Generic 2)
Procedure 321 Word 1: AAR Route Tables (Generic 2)
Procedure 321 Word 5: AAR-ISDN and Other Feature Parameters (Generic
2)
Procedure 107 Word 1: ATMS TTL Assignment (System 85 R2V4)
Procedure 108 Word 1: ISDN Trunk Group TTL Assignment (Generic
2)
DS1 Circuit Pack Screen
Synchronization Plan Screen
Trunk Group Screen, Page 1
Trunk Group Screen, Page 2
Trunk Group Screen, Page 1 (DMI)
DS1 Circuit Pack Screen, Common-Channel Signaling
DS1 Circuit Pack Screen, ISDN-PRI Signaling
Synchronization Plan Screen
Trunk Group Screen, Page 1 (Tie)
Trunk Group Screen, Page 2 (Tie)
Trunk Group Screen, Page 3 (Tie)
Data Module Screen
Processor Channel Assignment Screen
Interface Links Screen
Network-Facilities Screen
Trunk Group Screen, Page 1 (ISDN-PRI)
Trunk Group Screen, Page 2 (ISDN-PRI)
Trunk Group Screen, Page 2 (ISDN-PRI) for Cases 1-8
Trunk Group Screen, Page 3 (ISDN-PRI)
Trunk Group Screen, Page 4 (ISDN-PRI)
Trunk Group Screen, Page 5 (ISDN-PRI)
7-92
7-94
7-96
7-97
7-98
7-100
7-101
7-103
7-104
7-105
7-106
7-107
7-111
7-112
7-113
7-114
7-116
7-116
7-120
7-121
7-123
7-123
7-125
7-126
7-127
7-129
7-130
7-133
7-139
7-140
7-142
7-143
Figure 7-64.
Figure 7-65.
Figure 7-66.
Figure 7-67.
Figure 7-68.
Figure 7-69.
Figure 7-70.
Figure 7-71.
Figure 7-72.
Figure 7-73.
Figure 7-74.
Figure 7-75.
xvi
CONTENTS
Figure 7-76.
Figure 7-77.
Figure 7-78.
Figure 7-79.
Figure 7-80.
Figure 8-1.
Figure A-1.
Figure A-2.
Figure A-3.
Figure A-4.
Figure A-5.
Figure A-6.
Figure B-1.
Figure B-2.
Figure B-3.
Figure B-4.
Figure B-5.
Figure B-6.
Figure B-7.
Figure B-8.
Figure B-9.
Figure B-10.
Figure B-11.
Figure B-12.
Figure B-13.
Figure B-14.
Figure B-15.
SID Prefix Table Screen
SID Prefix Table Screen, Sample Application
Routing Patterns Screen
Hunt Group Screen
Terminating Extension Group Screen
Facilities Generating the RFA
DS1 Circuit Pack Screen
Trunk Group Screen, Page 1 (MEGACOM)
Trunk Group Screen, Page 1 (MEGACOM 800)
Trunk Group Screen, Page 1 (MEGACOM 800 DNIS)
Trunk Group Screen, Page 1 (SDN)
Synchronization Plan Screen
Incorrect Translations (Procedure 260)
Correct Translations (Procedure 260)
Incorrect Assignment of Trunks
Correct Assignment of Trunks
System 75 or System 85 with CDMs
Translation Effects on the CEM
Arrangement for a Complex CEM Installation
System 75/System 85 to a D4-Channel Bank
Internal Timing (No Synchronization)
Leavenworth Loop on the Primary Reference
Leavenworth Loop on the Secondary Reference
No Synchronization Reference Assigned at Location A
No, Primary, or Secondary Sync Reference Assigned at Location A
Compatible Synchronization References
Synchronization from DACS Node
7-144
7-146
7-147
7-150
7-151
8-9
A-1
A-2
A-3
A-4
A-5
A-5
B-2
B-3
B-4
B-4
B-5
B-6
B-7
B-8
B-9
B-10
B-10
B-11
B-11
B-12
B-13
CONTENTS
xvii
LIST OF TABLES
TABLE 1-1.
TABLE 1-2.
TABLE 1-3.
TABLE 3-1.
TABLE 4-1.
TABLE 4-2.
TABLE 5-1.
TABLE 6-1.
TABLE 7-1.
TABLE 7-2.
TABLE 7-3.
TABLE 7-4.
TABLE 7-5.
TABLE 7-6.
TABLE 7-7.
24th-Channel Signaling Arrangement
Data-Module Capabilities
BCCOS
System 85 Traditional Module Equalizer Settings (Metallic Cable)
Digital Loss Plan Encodes
Digital Loss Plan (Port-to-Port Losses)
SCS References Switches
Supported Digital Facilities
DS1 Administration — Channel Versus Line Assignments
Trunks Supporting Signaling Type 20
DS1/ISDN-PRI Administration — Channel Versus Trunk
Assignments
Network Service/Feature Options
Administration Summary
Equipment Parameters and Permitted Translation Encodes
TN767 Compensation Values
Codeset Differences
Trunks Supporting Signaling Type 20
DS1/ISDN-PRI Administration — Channel Versus Trunk
Assignments
TABLE 7-8.
TABLE 7-9.
TABLE 7-10.
TABLE 7-11.
TABLE 7-12.
TABLE 7-13.
TABLE 8-1.
TABLE B-1.
TABLE B-2.
Network Services/Network Features
Line Compensation Settings
Line Compensation Values
Minor/Major Alarm to Errored Seconds Conversions
50-Pin (25-Pair) Connector Configurations
System 75 Versus System 85 Cable Comparisons
15-Pin Connector Arrangement (System 75/85 Perspective)
8-Position Modular Jack Pin Assignments (System 75 and System 85
Perspective)
Internal Definition Translations
System 85 R2V4 to Generic 2 IE Opcode Translations
1-15
1-21
1-25
3-9
4-3
4-5
5-10
6-2
7-14
7-25
7-37
7-45
7-48
7-56
7-64
7-72
7-83
7-93
7-99
7-108
7-117
8-10
B-14
B-15
B-16
TABLE B-3.
TABLE B-4.
TABLE C-1.
TABLE C-2.
B-17
C-10
C-12
xviii
CONTENTS
TABLE C-3.
TABLE C-4.
TABLE D-1.
TABLE D-2.
TABLE D-3.
TABLE D-4.
User-to-User IE Opcodes
C-12
Codeset Map Number to Incoming and Outgoing Translations
C-12
Trunk/Signaling Cross References
D-2
R2V4 Alternate Signaling Type Translations
D-6
Signaling Type Compatibility
D-7
Signaling Type Definitions
D-8
ABOUT THIS DOCUMENT
PURPOSE
Over the past several years, basic digital signal level 1 (DS1) service has evolved to include new
capabilities and thereby support more sophisticated applications. The three prime applications are:
1.
2.
3.
Digital multiplexed interface with bit-oriented signaling (DMI-BOS)
Digital multiplexed interface with message-oriented signaling (DMI-MOS)
Integrated Services Digital Network primary rate interface (ISDN-PRI)
Since these three applications merely build on each proceeding application, and extend basic DS1
service, they are covered in a single document. This document is reissued (as issue 4) to:
1.
2.
Include coverage for the 551V ST network channel-terminating equipment (NCTE) (also called
the channel service unit or CSU)
Upgrade System 85 R2V4 administration procedures to include:
●
●
Coverage for issue 7 of the maintenance and administration panel (MAAP) flip charts
Additions and corrections to the administration procedures
●
Clarifications on the use of trunk type 120 (ISDN-dynamic) and other trunk types for
providing Call-by-Call (CBC) Service Selection
Add coverage for DEFINITY
®
Communications System Generic 2 ISDN-PRI
3.
4.
5.
Add coverage for System 75XE DS1/DMI
Add coverage for DEFINITY Communications System Generic 1 ISDN-PRI
This document describes System 75 and System 75XE DS1/DMIs as well as Generic 1 and Generic 2
ISDN-PRI. It introduces and defines the concepts and terminology that are unique to
DS1/DMI/ISDN-PRI. Also included are descriptions of DS1/DMI/ISDN-PRI applications (for both
private and public networks), engineering procedures and considerations, cabling and connection
arrangements, and administration requirements, restrictions, and limitations.
xix
xx
ABOUT THIS DOCUMENT
INTENDED AUDIENCES
Since this document contains information ranging from the brief tutorial to the detailed requirements,
it should prove useful to several groups of readers, including:
●
●
●
●
●
●
●
Marketing personnel
Technical consultants
Network engineers
Installation personnel
System administrators
Account teams
Customers
PREREQUISITE SKILLS AND KNOWLEDGE
While there are no prerequisite skills assumed in this document, a basic understanding of telephony
and networking is required. The GLOSSARY and ABBREVIATIONS appendixes of this document are
provided to assist you in understanding the terminology used herein. See the Related Sources heading
later in this preface, About This Document, for a list of other documents that discuss similar topics.
HOW THIS DOCUMENT IS ORGANIZED
This document consists of the following chapters:
1.
2.
3.
4.
5.
INTRODUCTION — Provides a high-level functional description of the DS1/DMI/ISDN-PRI
channels, available framing formats, signaling options, and line coding formats.
NETWORK CONNECTIONS AND CONFIGURATIONS — Describes functional connection
arrangements to private network facilities (private endpoints) and to public network facilities
(public endpoints). Included along with the public network discussions are Switched Access
connections and services. This section also describes connection arrangements using digital
multiplexer transmission equipment.
DS1 — TRANSMISSION AND CABLING — Describes cable distance limitations versus
cable size, permitted cable types, the DSX-1 interface specification, the need and function of
customer service units, on- and off-premises cable configurations, metallic and nonmetallic
cable options, and equalizer and compensation settings.
THE DIGITAL LOSS PLAN — Describes transmission loss concepts, the analog and digital
loss plans and the differences between them, and the user or installer impact (switch settings
and administration values).
SYNCHRONIZATION OF DIGITAL FACILITIES — Describes synchronization strategies,
objectives, and requirements. This chapter also discusses the availability of synchronization
sources and includes the rules for selecting and assigning primary and secondary references and
facilities.
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