Troubleshooting Trunk Problems - Avaya MERLIN MAGIX Maintenance And Troubleshooting Manual

Maintenance and Troubleshooting

Troubleshooting Trunk Problems

This table provides a quick guide to troubleshooting trunks.
Table 5-1. Source of Trunk Problem–Section Reference
Symptom
General trunk problems
Incoming calls not being received
Cannot make outgoing calls
If the customer reports echoes during conversations on T1 trunks with GS emulation to a
toll office, check the system programming for T1 trunks. The system is not intended to
work with GS emulation to a toll office. Tie trunk emulation must be programmed.
Program the module to emulate tie trunks to the central office.
Manual Correction of Trunk Problems
If the system cannot seize a trunk even after repeated attempts, you may have to replace the
module.
To identify the trunk problem, follow these steps:
1. Check for dial tone at the control unit.
2. If you do not hear dial tone, check the error logs and make a trunk test call.
3. Check for dial tone at the network interface.
It is sometimes difficult for the customer to detect trunk troubles. If a trunk is down, the system
records an error in the error log and takes the trunk out of service. However, if an incoming-
only trunk is down, the only sign of trouble is customer complaints that incoming calls are not
being received.
Check the error logs for messages about trunk type (such as DID, tie, and T1). Also check the
wiring and the system parameters (for example, touch-tone/rotary, toll restriction, and
disconnect time interval).
Trunk Errors
5-2
5
Section
''Manual Correction of Trunk Problems''
''Incoming Trunk Problems''
''Outgoing Trunk Problems''
5
on page 5-2
on page 5-3
on page 5-3