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Important information for installation and operation
45
kap01.fm5
27.11.98
Profiset 30isdn engl.: A30853-X300-B107-1-7619
Procedure in the case of malfunctions
The cause of an operating error need not necessarily lie
with the device. You may save time and money by rectify-
ing simple faults yourself.
The following information should be of help.
Symptom Cause Action
No display. No power supply. Check that the telephone connect-
ing cord has been inserted correct-
ly in the device and the NTBA.
Check the NTBA plug-in connection
with the power network.
Check the restricted powering
switch, page 4.
No dial tone. No power supply. Check the plug-in connections of
the telephone connecting cord on
the device, the ISDN socket, and
the NTBA.
Handset cord not connected
correctly.
Check the plug-in connections of
the handset cord on the device and
on the handset.
No ringing tone. Loudspeaker volume off. Set the loudspeaker volume,
page 29.
With PBX operation: No or
incorrect connection after
dialling from memory.
Trunk code not set. Program the trunk code,
page 31.
The password entered is
rejected.
Password entered
incorrectly.
Try again. If you have forgotten
your password, contact Siemens
Service, page 44.
55


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