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MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Troubleshooting
Page 6-18DID Calls Not Completed
6
■ 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
In this configuration, the coordinating system manager must check routes and
default COR attributes for Systems B and C.
■ Check to make sure the calling restriction of the default COR is set to
unrestricted. The factory setting is outward restricted, which blocks calls
across the private network.
■ Check that the routes voice/data capability is correct for the type of call
being made. The factory setting is Both, which will support both voice and
data calls.
■ In each intervening system, compare the FRLs assigned to routes for the
call with the default COR FRL. The route FRL must be equal to or lower
than the default COR value or the call is blocked. The factory setting is 3.
■ If FRL settings are not the cause, call the Lucent Technologies Helpline at
1 800 628-2888; consultation charges may apply.