User's Manual

NDA-24300 CHAPTER 5
Page 317
Issue 1
FAULT REPAIR PROCEDURES
1.6 When Call Cannot Be Answered and Speech Cannot Be Made
Note:
If a circuit card is replaced because only one line is
faulty, no other lines in that circuit card can be used
until the replacement is complete.
Check the faulty line on the MDF. Isolate the faulty line to the in-house wiring
side and to the system side.
Connect the test telephone to the system side.
Call the faulty line by station-to-station
calling.
When speech can be made Replace the telephone set with a spare.
When speech cannot be made Replace the LC circuit card with a spare.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
START
END