Siemens Gigaset C1 User Manual page 153

Appendix
What has happened
when ...
... the answering machine
does not record any messages
or has automatically switched
over to "announce only"?
... the handset does not ring
after the ISDN number (MSN)
has been set up?
... You don't hear anything?
... You can't dial a phone
number any longer?
... there are no incoming
calls?
... during call forwarding the
forwarding conditions are
not displayed?
... the telephone also rings for
fax-PC calls?
... the display shows no call
charges?
... you cannot access the
answering machine?
... you are unable to record
any new information or
announcements?
... you have a PABX and, after
dialling, the wrong connec-
tion or no connection is
made?
... the handset does not ring
as set?
... it is not possible to access
the answering machine from
the handset?
... some of the ISDN func-
tions do not work as stated?
... another telephone on the
So bus does not ring?
152
Possible cause
Its memory is full.
The area prefix has been stored
with the MSN.
u
The key was pressed – the
microphone has been muted.
The long distance prefix has
changed.
The telephone is blocked.
Call forwarding Immediately
has been activated.
The MSN has not been assigned
to the internal user.
The authorisation Internal only
is set.
Internal call forwarding is acti-
vated.
The phone number is in the
phone number list of the base
telephone.
The call charge display is not set
or this performance feature is
not enabled by the network pro-
vider.
The answering machine lock has
been activated.
There is insufficient remaining
memory.
You have entered the wrong pre-
fix or no prefix.
There is a different setting for
the ringer melody for the MSN.
The handset is not assigned to
the receive MSN for the answer-
ing machine.
The ISDN function has not been
enabled.
The same MSN was assigned to
the telephones. One of the tele-
phones also has internal call for-
warding activated.
Possible solution
Delete old messages
Play back new messages and
delete.
Store MSN without area prefix
(page 112).
"
Press to return to the call.
Check the long distance prefix
and correct it (page 126).
Check the status display,
unlock the telephone if neces-
sary (page 10).
Deactivate call forwarding
Immediately(page 117).
Determine the receive MSN
(page 113).
Change the authorisation
(page 92).
Activate external call forward-
ing (page 117).
Apply to have this activated by
the network provider.
Delete the corresponding
phone number (MSN) in the list
(page 113).
Activate the call charge display
(page 73).
Apply for the performance fea-
ture "charge transmission"
from the network provider.
Enter answering machine PIN
(page 85).
Delete old messages/informa-
tion (page 144).
Reduce the quality of the
recordings (page 83).
Check and correct the prefix
(page 130).
Change the ringer tone melody
(page 115).
Check assignment (page 81).
Check with your network pro-
vider.
Deactivate internal call for-
warding or set external
call forwarding (page 116).