D/I MUX III User's Manual
B7 Alarm ...................................................................................................................................... 163
BPV Alarm ................................................................................................................................... 163
0-DEN Alarm ................................................................................................................................ 163
Loop Codes Alarms...................................................................................................................... 163
Alarm Contacts........................................................................................................................................... 163
Alarm Dialout.............................................................................................................................................. 164
ACO Button .................................................................................................................................. 164
Bypass Button .............................................................................................................................. 164
Bypass........................................................................................................................................................ 164
Power-Up Sequence .................................................................................................................................. 165
Troubleshooting.......................................................................................................................................... 165
Board-Level Troubleshooting ....................................................................................................... 167
Defective Units ........................................................................................................................................... 168
Line Interface Units (LIUs)............................................................................................................ 169
T1 Transmission Tests ............................................................................................................................... 171
T1 Interfaces .............................................................................................................................................. 171
Single Channel Bank Mode.......................................................................................................... 175
Drop-and-Insert Mode Tests ........................................................................................................ 177
Loopback Tests .......................................................................................................................................... 179
Channel Bank: Bypass ................................................................................................................. 180
Drop-and-Insert: Bypass .............................................................................................................. 184
Dual Channel Bank: Bypass......................................................................................................... 190
Software Diagnostics.................................................................................................................................. 196
OD - Operate Diagnostics .......................................................................................................................... 197
Performance............................................................................................................................................... 200
Technical Assistance.................................................................................................................................. 201
D/I Mux III Messages.................................................................................................................................. 202
Alarm Reporting ......................................................................................................................................... 205
APPENDIX B. -24 VOLT SYSTEMS ....................................................................................................................... 213
Common Equipment................................................................................................................................... 213
Voice Cards................................................................................................................................................ 213
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