Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 234

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Central Office Problems
Trunk Errors
Listen for dial tone.

If the trunk is busy, you hear a busy tone. If you dial a wrong trunk type (such as
DID) or an invalid trunk number, you hear a reorder tone.
If the module continues to malfunction, replace it.

Incoming Trunk Problems
If incoming trunks do not work properly, try the following procedure.
Place an incoming call through the troubled trunk.

Listen for ringing.

Pick up the handset and check line seizure.

Dial an outside number and verify that you have good two-way

transmission.
If dial tone is not present, use a test telephone to isolate the
problems either to the module where the trunk terminates or to the
location in the trunk access equipment.
If dial tone is present, dial a working outside number to verify that
the call can be completed.
— Dialing an outside number on a single-line telephone works
only if the trunk accepts touch-tone dialing.
— If you are using a single-line telephone to dial out to an
E&M tie trunk or a T1 tie trunk, wait for a click before dialing
the outside number.
For a loop-start (LS) trunk, connect a single-line telephone to the
trunk at the network interface.
For a ground-start (GS) trunk, connect a single-line telephone to
the trunk at the network interface and press the GS button. (For
GS trunks, the telephone must have a GS button attached to it.)
Issue 1
June 1997
Page 5-4