Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 81

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Telephone Problems
Fixing Telephone Problems
NOTE:
Refer to "Troubleshooting Trunk Problems" in
problem is echo during conversations on T1 trunks with GS emulation
connected to a toll office.
Check modular connections in the telephone for loose or broken

connectors.
Check modular connections in the connecting blocks for loose or

broken connectors.
Check modular connections in the control unit for loose or broken

connectors.
Check transient errors in the error logs for any possible clues.

If local power is provided, check the power supply connectors and

voltages.
Replace the telephone with a telephone that works to determine

whether the problem is the telephone itself.
If trouble disappears, replace the problem telephone.

If the replacement telephone does not work properly, check the

other telephones connected to the same module.
Check the LEDs on the module.

If the module does not have LEDs, see "System Status" in
more information.
Check the error log for relevant messages.

See Chapter 2, ''Error Logs, Access Logs, and System
Replace the faulty module.

If these telephones work, the problem may be the wiring, or there
may be a single-port failure on the module. To check the wiring,
go to Step 12.
If these telephones do not work, the fault is probably in the
module. To check the module, go to Step 9.
June 1997
Chapter 5 if the reported
Chapter 4
Inventory''.
Issue 1
Page 3-3
for