Siemens Gigaset 150 Owner's Manual page 71

Appendix
What has happened
when ...
... the incoming call number is
not displayed even though
CLIP is set?
... I hear an error tone (falling
tone sequence) when keying
an input?
... I cannot listen to the net-
work mailbox.
... the caller list does not indi-
cate a time for a message?
... the answering machine
reports "PIN is incorrect" dur-
ing remote operation?
... the answering machine
does not record any messages
or has automatically switched
over to 'announce only'?
70
Possible cause
Calling line identification is not
enabled.
The action has failed or the input
is incorrect.
Your phone system is set for
pulse dialling.
Date/time are not set.
The entered system PIN is incor-
rect or set to 0000.
The memory is full.
Possible solution
The caller should ask his net-
work provider to enable the
identification of his number
(CLI).
Repeat the procedure; watch
the display and if necessary
refer to the operating instruc-
tions.
Set your phone system to tone
dialling (page 68).
Set the date/time (page 14).
Enter the system PIN again or
set a PIN that is different from
0000 (page 63).
Delete old messages
Play back and delete new mes-
sages.