Lucent Technologies MERLIN LEGEND Release 7.0 System Manager's Quick Reference page 113

MERLIN LEGEND Communications System R7.0
System Manager's Quick Reference 555-670-119
Troubleshooting the System
Some Telephones Are Dead (No Dial Tone or Lights)
Possible Cause 6:
• If the replacement telephone does not receive a dial
tone and its lights do not function, there may be a
problem with the system wiring or the control unit. To
test one possible wiring problem, go to Possible
Cause 6.
NOTE:
The following procedure may help Lucent Technologies
Helpline technicians analyze your problem. You should not
perform this procedure, however, unless you have
experience removing the control unit cover and working with
the control unit extension jacks. Before proceeding, consult
System Planning Form 2a, System Numbering: Extension
Jacks.
!
WARNING:
If you must check something on the control unit,
proceed with caution. Do not stand on a box or chair to
reach the unit if it is installed out of easy reach. If you do
not have a stable ladder or other proper equipment, do
not proceed; wait for the Lucent Technologies
technician.
A module (or modules) may be defective.
What to do: Identify the control unit module or modules
where the telephones are connected.
• If the telephones are all connected to one module,
there may be a problem with the module. Call the
Lucent Technologies Helpline at 1-800-628-2888
(consultation charges may apply).
• If the dead telephones are connected to modules that
also connect working telephones, test the jacks on the
modules. Identify the port where each nonfunctional
telephone is connected. Identify a second port in the
same module connected to a working telephone and
Issue 1
April 1999
101