User's Manual

CHAPTER 5 NDA-24300
Page 326
Issue 1
FAULT REPAIR PROCEDURES
Check the faulty line on the MDF. If the C.O./Tie Line is in Loop Start system:
Isolate the faulty line to C.O. side and
to the system side.
Connect the test telephone to the C.O.
side.
Note 1:
Check can be made
only on temporarily
opened C.O./Tie Lines.
Confirm that Dial Tone (DT) is heard
and the call is connected to the desti-
nation party at the opposite office.
Note 2:
Cross connection
methods are explained on
the following pages.
If C.O./Tie Line is any other type than Loop
Start:
By cross connections on the MDF,
connect the faulty line to a normal
trunk.
By a designated connection from the
ATTCON/DESKCON, seize the
trunk connected with the faulty line
(*E).
When the connection is not set up,
the C.O./Tie Line is faulty
After the trunk has been seized, check
to see if a call can be originated.
When the connection is set up Replace the D
term
with a spare.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
A
END