Nortel Meridian Meridian 1, Планирование, установка и инструкции по эксплуатации

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Chapter 25 — Fault locating and clearing Page 523 of 536
Option 11C Compact Planning, Installation, Fault Clearing and CCBR Guide
Symptom:
One end cannot hear or cannot be heard
The person at the far end can hear you but you cannot hear them or the person
at the far end cannot hear you but you can hear them. Look up all system
messages in the Option 11C Compact software guide and follow the
instructions given. If the fault does not clear, use this procedure.
Constantly observe and look up system messages as you perform this
procedure.
You may need to replace:
• Peripheral Equipment (PE) circuit card
• Telephone handset
• Telephone
Defective telephone Disconnect the telephone from the jack. Plug in another
telephone of the same type.
If the replacement telephone works, replace the telephone you
removed.
If the replacement telephone does not work, reconnect the
original telephone and go to the next possible cause.
Note: If the telephone is a Meridian Digital Telephone, enter
LD 32
IDU c u
If there is no response, replace the telephone.
Defective wiring Make sure wiring is properly connected and wires are not
interchanged, crossed, or grounded.
Check the wiring between the telephone and the cross-connect
terminal.
Check the wiring between the PE shelf and the cross-connect
terminal.
If there is a wiring problem, correct it.
Possible cause Action