Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 44

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Introduction
Maintenance Strategy
Isolating the Trouble
You can isolate any problem to one of the following areas:
Telephone
Control unit
Central office
NOTE:
If you change the jack assignment of any telephone, be sure to record the
extension jack change on Form 2a, System Numbering: Extension Jacks.
See Appendix B, ''System Numbering
Check Telephone Problems
If a customer reports telephone problems, use the following steps as a guideline
for determining the possible cause.
discusses telephone problems in more detail.
Discuss the problem with the user who reported the problem.

Run the appropriate test to verify the complaint.

Replace the telephone with one that works properly.

If the problem persists, go to

If the problem persists, replace the telephone wiring.

Check the Error Logs
If a system alarm turns on (see the top-right area of
troubleshooting by checking the permanent errors in the error logs.
Use the following steps as a guideline to check the error logs. For more
information on performing the procedures, see
Forms'', for details.
Chapter 3, ''Telephone
''Check the Error Logs''
Figure
''Checking the Error Logs''
Issue 1
June 1997
Page 1-26
Problems'',
below.
1-7), begin
in