Ars Calls Are Blocked - Lucent Technologies MERLIN LEGEND Release 6.0 Network Reference Manual

MERLIN LEGEND Communications System Release 6.0
Network Reference 555-660-150
6 Troubleshooting

ARS Calls Are Blocked

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 network is set up. For example, a call might be routed
across the network in a fashion such as this:
Origin System A
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 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.
ARS Calls Are Blocked
Check Possible Cause 2 listed in
previous section. When an ARS call is routed across the network, it can be
intercepted because the default COR FRL at a networked system is lower than
the ARS route (or the UDP route if the system is sending the call to another
networked system).
If this is not the cause, check the Disallowed List entries applied to default COR
settings at systems where the call is routed either to the PSTN or to another
system in the network. Compare the entries to the dialed digits; a Disallowed List
may be blocking the call. If it is necessary to change the Disallowed List, see
"Disallowed Lists" in Chapter 3 of System Programming . Check the ARS
System B System C
"DID Calls Not Completed" on page 6–16
Destination System D
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Issue 1
February 1998
Page 6-17
of the