38
Appendix
Problem
You do not hear a dialling
tone after having picked up
the handset.
PIN code forgotten
No ringing signal for
incoming calls
Dialling with offline call pre-
paration do not work
Automatic redialling do not
work
Dialling process is
interrupted
No call is coming in
No illumination of display,
loudspeaker- and
assistance call key
Loudness (ringer, handset,
loudspeaker) is reduced
The transferred incoming
call number is not shown
possible cause
Telephone connecting cable,
handset cable, AC adapter
are not connected correctly
Ringing signal is deactivated
AC adapter is not plugged
or power failure
AC adapter is not plugged
or power failure
Dialling restriction is active
The handset is not placed
correctly
AC adapter is not plugged
or power failure
AC adapter is not plugged
or power failure
- AC adapter is not plugged
correctly or power
failure
- the transmission of the
number is not provided
- display of telephone
numbers is suppressed
recommended action
Check all cable connec-
tions, check telephone
access by using another
telephone, contact tele-
phone network provider
Call dealer
Activate ringing signal
(see page 30)
Plug AC adapter correctly
Plug AC adapter correctly
Deactivate dialling restric-
tion (see page 28)
Replace handset
Plug AC adapter correctly
Plug AC adapter correctly
- Plug AC adapter correctly
- contact telephone net-
work provider
- no remedy possible
