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126
Appendix
CX 253i / SWZ PTT en / A31008-X353-P100-1-19 / appendix.fm / 03.12.2007
… there are
no incoming
calls
?
Call diversion
Immediately
has
been activated.
The MSN has not been assigned
to the internal user.
The authorisation
Internal only
is set.
Deactivate call diversion
Immediately
Determine the receive MSN
Change the authorisation
… during
call diversion
the
forwarding conditions
are
not displayed?
Internal call diversion is
activated.
Activate external call diversion
… the telephone also rings for
fax-PC calls?
The phone number is in the
phone number list of the base
telephone.
Delete the corresponding
phone number (MSN) in the list
… you cannot access the
answering machine
?
The answering machine lock has
been activated.
Enter answering machine PIN
… you are unable to record
any new information or
announcements
?
There is insufficient remaining
memory.
Delete old messages/
information (page 68).
Reduce the quality of the
recordings (page 77).
… you have a
PABX
and, after
dialling, the wrong
connection or no connection
is made?
You have entered the wrong
prefix or no prefix.
Check and correct the prefix
… some of the
ISDN
functions
do not work as
stated?
The ISDN function is not
enabled.
Check with your network
provider.
… another
telephone
on the
So bus
does not ring
?
The same MSN was assigned to
the telephones. One of the
telephones also has
internal
call
diversion activated.
Deactivate internal call
diversion or set external call
diversion.
… the caller hears the phone
ringing
although
the MSN is
busy
?
The MSN was saved in devices
also used on the ISDN
connection.
The phone number which is
supposed to be used for call
protection during a call should
be deleted from the list of
phone numbers for each
individual additional device.
What has happened
when …
Possible Cause
Possible solution