Nortel 1000E Maintenance Manual page 104

Page 104 of 162
Table 25
Trunk cannot make or receive calls (Part 2 of 3)
Condition
553-3041-500 Standard 1.00
Clearing faults
Possible cause
Disabled or defective
TN
September 2004
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.