AT&T DS1/DMi/ISDN-PRI

SYNCHRONIZATION OF DIGITAL FACILITIES

5-25

DIGITAL TRANSMISSION FACILITY

PRIMARY FREQUENCY REFERENCE

SECONDARY (BACKUP) FREQUENCY REFERENCE

Figure 5-17. Excessive Cascading

DIGITAL TRANSMISSION FACILITY

PRIMARY FREQUENCY REFERENCE

SECONDARY (BACKUP) FREQUENCY REFERENCE

Figure 5-18. Minimized Cascading

Contents

Main NOTICE CONTENTS Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page ABOUT THIS DOCUMENT Page Page Page Page Page 1. INTRODUCTION Page Page Page Page Page Page Page Page Page Page e Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 2. NETWORK CONNECTIONS AND CONFIGURATIONS Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 3. DS1 TRANSMISSION AND CABLING Page Page Page 3-5 Page Page 3-8DS1 TRANSMISSION AND CABLING Figure 3-4. CEM and CDM Cable Configurations Page Page 4. THE DIGITAL LOSS PLAN Page Page Page Page Page Page Page 5. SYNCHRONIZATION OF DIGITAL FACILITIES Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 5-17 Figure 5-9. External-Clock Interface Figure 5-10. External-Clock Duplicated Synchronization Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 6. PORT TYPES/INSTALLATION COMPATIBILITIES Page Page Page Page Page Page 6-8 Figure 6-1. Physical and Virtual Carrier Slot Relationships, Line-Only Mode 6-9 Figure 6-2. Physical and Virtual Carrier Slot Relationships, Line+Trunk Mode Page Page Page Page Page 7. ADMINISTRATION OPTIONS AND REQUIREMENTS Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 7-27 Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 7-50 Page Page Page Page 7-55 Figure 7-28. Procedure 260 Word 1: Additional DMI-MOS/ISDN-PRI Circuit Pack Assignments (Generic 2) Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 7-114 Page 7-116 Figure 7-60. DS1 Circuit Pack Screen, Common-Channel Signaling Figure 7-61. DS1 Circuit Pack Screen, ISDN-PRI Signaling Page Page Page Page Page Page 7-123 Figure 7-64. Trunk Group Screen, Page 2 (Tie) Figure 7-65. Trunk Group Screen, Page 3 (Tie) Page Page 7-126 7-127 Link Enable Est Conn PI Ext Prot Destination Digits Destination Brd DTE/DCE Identification MODULE screen. Page Page Page Page Page 7-133 Page Page Page Page Page 7-139 ALLOCATION screen (Page 3 of 11). 7-140 Usage Page 7-142 Figure 7-74. Trunk Group Screen, Page 4 (ISDN-PRI) Fixed Page 7-144 Port Figure 7-76. SID Prefix Table Screen Page 7-146 7-147 Pattern Number Grp No. FRL NPA Page Page Page Page Page 8. MAINTENANCE AND ALARMS Page Page Page Page Page Page Page Page Page A. ADMINISTRATION REQUIREMENTS Page Page A-4 Figure A-5. Trunk Group Screen, Page 1 (SDN) Figure A-6. Synchronization Plan Screen Page B. SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS Page Page B-4 Figure B-3. Incorrect Assignment of Trunks Page Page B-7 Page Page Page Page Page Page Page B-15 TABLE B-2. System 75 Versus System 85 Cable Comparisons Page Page Page Page Page Page Page C. ADMINISTRATION PROCEDURE SUMMARY Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page D. TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES D-2 Direction Default Signaling EQU A1 - A4 Description Defines if the trunk type is capable of both: D-3 D-4 D-5 Page Page Page ABBREVIATIONS Page Page Page GLOSSARY Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page INDEX