Telephone Faults - Nortel Meridian 1 Manual

Page 158 of 190 Clearing telephone faults

Telephone faults

Telephones and terminals are the user's interface to the system and its
features. Components that can cause a telephone fault are:
— the telephone itself or add-on units
— the telephone power supply
— the building wiring
— the cross-connect from the telephone to the line circuit
— the unit on the peripheral line card
— the peripheral line card
— the ringing generator
— the peripheral controller card
— the peripheral module power
— the peripheral module backplane
Telephones and terminal faults typically affect only a single user. However,
if more than one telephone is affected, look for the following connections,
among others:
— they are on the same line card
— they are on the same module
— they are on the same loop
— they are served by the same peripheral controller
— there is a problem with ringing or tones
Use the following software programs and tests to isolate telephone faults:
— LD 30 to test network loops
— LD 31 to test sets and consoles
— LD 32 to test peripheral controllers
— LD 45 to perform signaling tests
— Meridian Modular Telephone (M2006, M2008, M2016S, and M2616)
553-3001-510 Standard 11.00 June 1999
self-test