Nortel 1000E Maintenance Manual page 103

Table 25
Trunk cannot make or receive calls (Part 1 of 3)
Condition
Trunk cannot make or
receive calls (OVD
message may be
received)
Table 25 provides additional instructions for isolating trunk faults in an
MG 1000E or MG 1000T
Possible cause
Excessive traffic in the
system
Defective trunk circuit
card
Clearing faults
Action
Additional trunk circuit cards may be
required to handle the traffic in the
system.
If the indicated circuit card is an E&M or
Universal Trunk circuit card,
hardware-disable then re-enable the
circuit card to initiate a self-test.
If the test fails, replace the circuit card. If
the test passes, perform the following:
Disconnect the wiring between the circuit
card and the cross-connect terminal.
Communication Server 1000E
Page 103 of 162
Maintenance