User's Manual

CHAPTER 5 NDA-24300
Page 314
Issue 1
FAULT REPAIR PROCEDURES
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
and check to see if dial tone can be heard.
When Dial Tone (DT) is heard Check the in-house wirings.
Replace the station telephone set with a spare.
When no DT or side tone is
heard
Check LT cables.
Replace the LC circuit card with a spare.
When DT is not heard, but side
tone can be heard.
Replace the LC circuit card with a spare.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
A
END