Table of Contents
Advertisement
No incoming external calls possible
•
If you hear an announcement that the subscriber's line is temporarily not avail-
able, check the connecting cable between telephone system and NTBA and re-
place it if necessary. If this does not solve the problem, check if your point-to-
multipoint connection is functioning properly according to the following instruc-
tions.
•
If the telephone system is connected to a point-to-multipoint connection, remove
the system plug from the NTBA and plug the NTBA mains plug into a functioning
mains wall outlet. Take an ISDN terminal and plug it into the NTBA. If you hear a
dialling tone in the receiver of your ISDN terminal, the point-to-multipoint connec-
tion is functioning properly and the fault can only be within the telephone system
or the wiring between NTBA and telephone system.
Check the S
ports of your telephone system. If the S
0
there is most probably a problem with the wiring. Please contact the company that
installed your telephone system.
Note: Please clarify all further questions with your specialist dealer, who can
possibly also carry out a remote maintenance. The TIPTEL AG Service Centre of-
fers comprehensive support.
Support for malfunctions
73
ports are functioning properly,
0
Advertisement
Table of Contents
