Chapter 9: Troubleshooting
Operational problems
Fault
Probable cause
Action or comment
No display
The battery level is low or the
handset is defective.
Charge the battery or contact
system administrator.
Sound off
is on, or ringer volume
set to silent, or the handset is
defective.
No ringing
Sound off
is on, or ringer volume
set to silent, or the handset is
defective.
Long press
Sound off
, or
increase volume, or contact
system administrator.
No change in time and date
setting
PBX dependent.
Changes in the handset appear
after a maximum of 24 hours after
a change in the system or by
turning the handset off and on
again.
Cannot mute handset by long
pressing
Sound off
or
Mute
Not possible to set the ring volume
to Silent.
Handset, with
In Charger
>
Other
actions
>
Sound off enabled
, is
not muted when placed in charger.
A handset restriction preventing
the user to silence the handset.
Enable the parameter
Possible to
turn off sound
, see the handset’s
Configuration Manual.
Cannot switch off handset by long
pressing
On-hook
.
Handset, with
In Charger
>
Other
actions
>
Sound off enabled
, is
not switched off when placed in
charger.
A handset restriction preventing
the user to switch off the handset.
Enable the parameter
Possible to
switch off handset
, see the
handset’s Configuration Manual.
July 2017
Using 3730 DECT Handsets with Communication Manager and IP Office
54