MERLIN LEGEND Communications System Release 6.1
Maintenance and Troubleshooting
555-661-140
Issue 1
August 1998
Page 5-2
Trunk Errors
Table 5–1. Troubleshooting Trunk Symptoms
Manual Correction of Trunk Problems
If the system cannot seize a trunk even after repeated attempts, you may have
to replace the module.
To identify the trunk problem, follow the steps below.
!Check for dial tone at the control unit.
!If you do not hear dial tone, check the error logs and make a trunk
test call.
!Check for dial tone at the network interface.
It is sometimes difficult for the customer to detect trunk troubles. If a trunk
is down, the system records an error in the error log and takes the trunk
out of service. However, if an incoming-only trunk is down, the only sign
of trouble is customer complaints that incoming calls are not being
received.
Check the error logs for messages about trunk type (such as DID, tie,
and T1). Also check the wiring and the system parameters (for example,
touch-tone/rotary, toll restriction, and disconnect time interval).
Symptom Section
Incoming calls not being received Incoming Trunk Problems, page 5-4
Cannot make outgoing calls Outgoing Trunk Problems, page 5-3
General trunk problems Manual Correction of Trunk Problems,
page 5-2
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