Lucent Technologies MERLIN LEGEND Release 6.1 Maintenance And Troubleshooting Manual page 295

MERLIN LEGEND Communications System Release 6.1
Maintenance and Troubleshooting 555-661-140
Private Network Calling Problems
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 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, go to Possible Cause 6.
Possible Cause 6: There may be a numbering conflict in the switch identifiers
for the trunks that carry the call. Within a private network, switch identifiers
should be unique and unambiguous. If they are not, calls may terminate
prematurely or continue to route unexpectedly.
What to Do: The coordinating system manager must check system planning
Form Non-Local UDP Administration Form in the Installation Specification and
review the switch identifiers for all systems over which calls travel to reach the
destination extension(s). To review a report including the switch identifiers
programmed on your local system, select the
Programming menu and then choose
If the switch identifiers are not correct, the coordinating system manager
must see that a change is made at one or more non-local systems where
the conflict exists. To change the current switch identifiers at your local
system, see "Switch Identifiers" in Chapter 5 of Network Reference , or
"UDP Facilities" in Chapter 3 of System Programming .
If the switch identifiers are correct and the problem persists, do one of
the following:
System B System C Destination System D
option on the System
and
Issue 1
August 1998
Page 5-49
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