Troubleshooting
Avaya 3720 DECT Telephone - User Guide 02/2009 59
Troubleshooting
This section cont ains information o n how to solve common operational problems, and warnings
you may receive.
Go through the following lists if you encounter an y problems. If th is checklist does n ot solve the
problem, contact your system administrator.
If others have similar problems, there may be a system error.

Operational problems

Error or warning messages

Fault Probable cause Action or comment
No display The battery level is low or the
telephone is defective. Charge the battery or contact
system administrator.
No ringing The ringer off icon is on or ringer
volume set to silent or the
telephone is defective.
Long press on the Sound off
key, or increase volume, or
contact system administrator.
No change in time &
date setting PBX dependent. Changes in the telephone
appear after a maximum of 24
hours after a change in the
system or by tuning the
telephone off and on again.
Display shows Probable cause Action or comment
No access The network is in range, but no
access rights. Switch telephone off and then
switch it on again or contact
system administrator.
No System. The
telephone beeps once
a minute (during max
30 minutes) with a low
tone followed by a high
tone (if enabled, the
vibrator also follows
the beeps).
The telephone is out of coverage
or telephone is defective. Stop the beep with the Silent
off key and go into range.
Note: When re-entering the
coverage area it can take a
couple of minutes before the
telephone automatically has
registered into the system.
or
contact system administrator.