Connecting the telephone system
30
Note:
The first S
0
port of the telephone system is factory default set to ISDN
point-to-multipoint connection. If you have an ISDN point-to-point con-
nection, at a connected telephone you must dial the digits
to set the port to point-to-point connection. Only af-
ter doing so external calls are possible.
In case you do neither have an analogue nor an ISDN connection and
you wish to telephone exclusively over the internet (VoIP) a certain con-
figuration of your telephones system is necessary.
With factory default settings of the telephone system all telephones will ring with all
telephone numbers and for external calls a 0 (zero) must be dialled before the exter-
nal telephone number. This can be changed in the telephone system's configuration.