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Trunk Errors
Outgoing Trunk Problems
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If the system cannot sieze outgoing trunks, try the
NOTE:
following procedure.
You cannot perform this procedure on a rotary telephone.
Check for outside dial tone at the network interface.
For GS trunks, apply ground to the ring lead to get dial tone. If dial tone is not
present, notify the customer.
Pick up the handset of a test telephone to check for system dial tone.
For a Hybrid/PBX system, dial
*03.
Dial the 2-digit trunk number (01-80) of the trunk you want to test.
Listen for dial tone.
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.
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.
Central Office Problems 5–3