Avaya 4600 Series manual Resolution As above

Troubleshooting Guidelines

Table 5-1. Some Error Conditions in Operation of 4600 Series IP Telephones —Continued

Condition		Cause/Resolution
The telephone had been	AND the telephone was	CAUSE: Loss of communication with the
working, but does not	recently moved.	PBX.
work now, (continued)		RESOLUTION: As above, but pay
		particular attention to the possibility that
		the telephone is being routed to a
		different DHCP server, or even a
		different PBX switch. If so, the new
		server or switch may need to be
		administered to support the telephone.

The telephone works, but the audio quality is poor, specifically:

the network was recently changed (servers upgraded or replaced, your DEFINITY/MultiVantage switches, etc.).

the user hears echo when speaking on a handset.

the user hears echo on a headset, but not on a handset.

the user is on speakerphone and hears no echo, but the far end hears echo.

CAUSE: Loss of communication with the PBX.

RESOLUTION: As above.

CAUSE: Echo from digital-to-analog conversion on your DEFINITY/ MultiVantage trunk.

RESOLUTION: Verify which trunk is causing the echo, and swap the trunk’s Trunk Termination parameter on the PBX.

CAUSE: Improper headset adapter.

RESOLUTION: Replace adapter with Avaya’s M12LU or 3412-HIC adapters. The M12LU is recommended, since it supports Automatic Gain Control.

CAUSE: Room acoustics

RESOLUTION: Ensure there are six inches or so of blank space to the right of the telephone. If that is insufficient, use the handset.

Error Conditions

5-3