AT&T Telephone DS1/DMi/ISDN-PRI User manual

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

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

xx

xxii

xxiii

1-1

1-7

1-10

1-14

1-16

1-22

1-23

1-25

1-28

1-29

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

2-4

2-5

2-6

2-7

2-8

2-9

2-10

2-12

2-13

2-15

3-1

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

4-3

4-4

4-6

4-7

5-1

5-3

5-7

5-9

5-11

5-12

5-14

5-18

5-19

5-27

5-28

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

6-5

6-10

6-13

6-14

7-1

7-3

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

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

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

8-2

8-5

8-6

8-7

8-8

A-1

B-1

B-3

B-5

B-7

B-8

B-9

B-10

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-3

C-4

C-5

C-6

C-7

C-8

C-9

C-11

C-13

C-16

C-17

C-18

CONTENTS

xi

D. TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY

TABLES

ABBREVIATIONS

AB-1

GLOSSARY

INDEX

D-1

GL-1

IN-1

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

5-19

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

5-26

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

7-120

7-121

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

B-2

B-3

B-4

B-5

B-6

B-7

B-8

B-9

B-10

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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AT&T Telephone DS1/DMi/ISDN-PRI User manual

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AT&T Telephone DS1/DMi/ISDN-PRI User manual

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