Page 508 of 536
Chapter 25 — Fault locating and clearing
553-3121-210
Standard 3.0
January 1999
Symptom:
Trunk cannot make or receive calls (no OVD message)
You cannot make or receive calls over a trunk, but there is no overload (OVD)
or other system message showing the TN for this trunk is defective or has
been disabled. Look up all system messages in the Option 11C Compact
software guide and follow the instructions given. If the fault does not clear,
use this procedure.
Manual continuity can be used to isolate faults to Peripheral Equipment. See
“LD 30” in the Option 11C Compact software guide for details on performing
the tests.
Trunk connections from the main frame to the Peripheral Equipment can be
checked with a butt-in set or test set. Check the trunk wiring at the entry point
for dial tone and progress toward the PE.
Constantly observe and look up system messages as you perform this
procedure.
You may need to replace:
•
Trunk circuit card: NTMW07
•
NTMW01 SSC card
•
Trunk equipment (such as music source or paging equipment)
Содержание Meridian Meridian 1
Страница 3: ...553 3121 210 Standard 3 0 January 1999 ...
Страница 17: ...xiv Contents 553 3121 210 Standard 3 0 January 1999 ...
Страница 89: ...Page 70 of 536 Chapter 6 Bracing cabinets against earthquakes 553 3121 210 Standard 3 0 January 1999 ...
Страница 97: ...Page 78 of 536 Chapter 8 Installing a new system 553 3121 210 Standard 3 0 January 1999 ...
Страница 107: ...Page 88 of 536 Chapter 10 Installing the system ground 553 3121 210 Standard 3 0 January 1999 ...
Страница 113: ...Page 94 of 536 Chapter 11 Installing the power supply 553 3121 210 Standard 3 0 January 1999 ...
Страница 125: ...Page 106 of 536 Chapter 12 Adding an expansion cabinet 553 3121 210 Standard 3 0 January 1999 ...
Страница 139: ...Page 120 of 536 Chapter 13 Installing the circuit cards 553 3121 210 Standard 3 0 January 1999 ...
Страница 157: ...Page 138 of 536 Chapter 15 Installing and connecting SDI and Ethernet ports 553 3121 210 Standard 3 0 January 1999 ...
Страница 175: ...Page 156 of 536 Chapter 16 Starting up and testing the system 553 3121 210 Standard 3 0 January 1999 ...
Страница 209: ...Page 190 of 536 Chapter 18 Connecting the trunks 553 3121 210 Standard 3 0 January 1999 ...
Страница 323: ...Page 304 of 536 Chapter 21 Installing Hospitality 553 3121 210 Standard 3 0 January 1999 ...
Страница 419: ...Page 400 of 536 Chapter 23 Pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 455: ...Page 436 of 536 Chapter 24 Changing pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 555: ...Page 536 of 536 Chapter 25 Fault locating and clearing 553 3121 210 Standard 3 0 January 1999 ...