Avaya MERLIN MAGIX Maintenance And Troubleshooting Manual page 129

Maintenance and Troubleshooting
System Programming. To check the current call routing on a system, follow this procedure:
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Procedure
→
Tables UDP Routing
number of the pattern that you want to review
routing for the pattern
Call to a Non-Local Extension: Unexpected Busy
Tone
This topic discusses unexpected busy tones that may be caused by system features. It applies not
only to regular calls from one private network extension to another but also to remote access calls
that are routed among private network systems. Call to Non-Local Extension: Silence or Fast Busy
Tone outlines possible causes for a busy tone that relate either to system programming of facilities
or to call routing.
As a first step, the caller should try using Callback. All available local routes for the call may be
busy, and Automatic or Selective Callback allows the call to queue for the next available tandem
trunk assigned to the Route 1 pool.
If a user is having trouble with the Callback feature, see
If the wait time for an available local trunk is unacceptable, you may be able to change the local
extension or barrier code FRL and/or route FRLs for the UDP pattern in order to make more routes
available for the call.
If you want to make changes in FRLs for routes, speak with the coordinating system manager for
your private network and consult the following resources:
"How Facility Restrictions Levels Work in a Network" in Chapter 4 of Network Reference
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discusses FRL planning in detail.
To change a UDP route FRL, see "Uniform Dial Plan Routing" in Chapter 5 of the Network
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Reference.
To change the extension FRL, see "Programming Procedures" in the Automatic Selection
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feature in Feature Reference.
To change the FRL assigned to a remote access barrier code, see "Remote Access" in
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Feature Reference, Follow the guidelines in "Remote Access Default Class-of-Restriction
Settings" in Chapter 4 of Network Reference.
SECURITY ALERT:
FRLs, applied to ARS and UDP routes, default class-of-restrictions (COR) for all tie and/or all
non-tie tandem trunks, extensions, and remote access barrier codes are particularly
important for maintaining security in a private network. Before changing FRLs in your
system, check with the coordinating system manager, who should understand the security
implications for your local system and for the private network as a whole.
Troubleshooting Guidelines and Preparation
5-12
→
Press Inspct to view current patterns in use
→ → →
Back Back Back
5
→ →
Press Inspct to view the current
Enter
→
Back
5
''Callback Does Not Work''
→ →
Dial the
Back
on page 5-24.