Lucent Technologies MERLIN LEGEND Release 6.1 Maintenance And Troubleshooting Manual page 310

MERLIN LEGEND Communications System Release 6.1
Maintenance and Troubleshooting 555-661-140
DID Calls Not Completed
the maintenance screen to determine if it matches the pool used to deliver the
call. If it matches, check occurrence times and count. If the count is too high and
the occurrences indicate the problem occurred within the duration of the
occurrences, consider changing the routing of the call, pool sizes, or add trunks
to the pool if empty.
To add more routes that can handle the call, see "Uniform Dial
Plan Routing" in Chapter 5 of Network Reference , or "UDP
Routing" in Chapter 3 of System Programming.
If more trunks are available and need to be assigned, follow the
procedure in "Trunks to Pools Assignment" in Chapter 3 of
System Programming to assign more tandem trunks. All the
tandem trunks in a pool must be of the same type (tie or PRI).
If not enough trunks are available, consider adding more to the
system.
If there are sufficient trunks assigned and the problem persists,
the cause of the problem may be at an intervening system
between the one where the calls are received from the PSTN and
the destination. Go to Possible Cause 2.
If there are sufficient trunks and routes and there are no
intervening systems between the one where the calls are
received from the PSTN and the destination, contact the provider
of the DID service. If this does not solve the problem, call the
Lucent Technologies Helpline at 1 800 628-2888; consultation
charges may apply.
Possible Cause 2: The FRL for the default COR for all tie (T-1 emulated voice
or data, or analog) or non-tie trunks (PRI) on the remote system may be
blocking tandem calls.
What to Do: Check with the coordinating system manager so that he or she can
determine where the problem exists. This may involve more than one system,
depending upon how your private network is set up. For example, a call might
be routed across the private network in a fashion such as this:
Origin System A System B System C Destination System D
Issue 1
August 1998
Page 5-64