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Troubleshooting 135
Problems With the ISDN Line
The ISDN initialization failed
This problem occurs when you attempt to save the parameters
entered in menu 2, but receive the message, “Save successful, but
Failed to initialize ISDN; Press ESC to exit”.
1. Check the error log (in menu 24.3.1), you should see a log
entry for the ISDN initialization failure in the format, “ISDN
init failed. code<n>...”. Note the code number, n.
2. If the code is 1, the ISDN link is not up. This problem could be
either the ISDN line is not properly connected to the Prestige,
or the ISDN line is not activated. Verify that the ISDN line is
connected to the Prestige and also to the wall outlet (to the
telephone company).
3. If the code is 2, this indicates an SPID error. Verify the SPID(s)
that you have entered in menu 2. If these are correct, try to
initialize again from menu 24.4.3.
4. If the code is 3, this indicates a general failure. Verify the
SPID(s) in menu 2. If these are correct, you may also need to
verify the provisioning information for your switch by
contacting your telephone company.
The ISDN loopback test failed
If the ISDN initialization has passed, then the loopback test should
also pass. Verify the phone numbers that have been entered in
menu 2. The loopback test will dial the number entered in the 2
nd
Phone # field (except for switch types with only one phone
number). If you need to dial a prefix (e.g., 9) to get an outside line,
then you have to enter the phone number as 95551212 or
914085551212. If it is an internal line, you may only need to enter
the last four or five digits (according to your internal dialing plan),
e.g., 51212.