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Troubleshooting
Avaya 3720 DECT Telephone - User Guide 11/2010
59
Troubleshooting
This section contains information on how to solve common operational problems, and warnings
you may receive.
Go through the following lists if you encounter any problems. If this checklist does not 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.
Ring volume cannot be
set to level 0
Or,
Not possible to mute
the telephone by long
pressing the Sound off
key or Mute button.
If the handset parameter Disable
permanent mute is enabled by
WinPDM or AIWS device
manager, it is not possible to turn
off the sound.
This is a handset Administrator
setting. See Installation and
Administration Manual, DECT
R4.
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.