Nortel 1000E Maintenance Manual page 99

Possible cause
Disabled or defective
TN
Defective wiring
Defective trunk
equipment
Copyright © 2007, Nortel Networks
.
Action
Enable the TN by entering the following:
For MG 1000T:
LD 32
ENLU c u (where c u represent card and unit numbers)
For MG 1000E:
LD 32
ENLU l s c u (where l s c u represent loop, shelf, card and unit
numbers)
Wait for an OVD message.
If an OVD message appears, replace the circuit card.
If there is no OVD message, reconnect the wiring and go to the next
possible cause.
Test the TN by entering:
LD 30
UNTT c u ("c u" represents card and unit numbers)
Test other TNs by entering:
TEST
If the test fails, replace the indicated item and test again. Otherwise, go
to the next possible cause.
At the main cross-connect terminal, disconnect the wiring to the CO or
other trunk equipment (such as a music source or paging equipment).
Enable the TN and wait for an OVD message. If an OVD message
appears, repair or replace the wiring to the Media Gateway.
If there is no OVD message, repair or replace the wiring from the
cross-connect terminal to the telephone.
If the trunk circuit card still does not enable or there is still a trunk problem,
reconnect the wiring and go to the next possible cause.
Make sure the CO equipment or other trunk equipment is not defective.
If there is no problem with this equipment, go to the next possible cause.
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 01.02 Standard
Release 5.0 20 June 2007
Clearing trunk faults 99