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Appendix
17
Appendix
17.1 Short troubleshooting guide
In most cases, you can detect error causes and resolve occurring prob-
lems or malfunctions by the following troubleshooting table.
Problem
Possible cause
Action
You do not hear a dialling
tone after having picked up
the handset.
Telephone connecting
cable, handset cable,
telephone socket.
Check all cable connec-
tions, check telephone
access by using another
telephone, contact tele-
phone network provider.
If there is an incoming call,
the telephone only rings
once.
Function „Talkback mode“
is set.
Deactivate the function.
Display and key pad without
illumination
Illumination is switched off. Activate the function.
Incoming calls can not be
accepted via the pendant
(„L-Phone II-f“ variant only)
The function is switched off. Activate the function.
PIN code forgotten.
Contact your dealer or
manufacturer.
Caller‘s telephone number
is not being displayed, list
of released numbers for
ringing signals and list of re
-
stricted numbers for ringing
signals without function.
The feature „CLIP“ (calling
line identification presenta
-
tion) is not possible with
your telephone network
provider or this function has
not been released.
Contact your telephone
network provider.
No ringing signal for incom
-
ing calls.
Ringing signal is deacti-
vated.
Activate ringing signal.
Telephone always dials the
same telephone number.
Direct call or automatic
direct call is activated.
Deactivate direct call func
-
tion.
Dialling process is inter-
rupted.
Dialling restriction is active.
Deactivate dialling restric-
tion.
