MERLIN LEGEND Communications System Release 6.1
Maintenance and Troubleshooting
555-661-140
Issue 1
August 1998
Page 3-3
Fixing Telephone Problems
General Telephone and Wiring Problems
If intermittent telephone trouble occurs, use the following steps as a guideline to
check for general telephone and wiring troubles.
NOTE:
Refer to “Troubleshooting Trunk Problems” on page 5–1 if the reported
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.
■ 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
.
!Check the LEDs on the module.
If the module does not have LEDs, see “System Status” on page 4–128
for more information.
! Check the error log for relevant messages.
See “Error Logs” on page 2–1.
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