FRITZ!Box
39
ISDN PBXs on FRITZ!Box
If you have entered only fixed-line numbers as MSNs
in the ISDN telephone, all calls will be conducted on
the fixed-line network. If you want to use Internet tele-
phony, you must replace an MSN with an Internet
number.
See the documentation for your ISDN telephone for instruc-
tions on setting up MSNs.
In FRITZ!Box you can enter additional Internet or fixed-line
numbers, which can then be assigned to the ISDN tele-
phones. A list of all registered numbers is displayed after
selecting “Telephony / ISDN Terminal Devices” in the
menu.
All of the MSNs set up in the ISDN terminal devices must al-
so be entered in FRITZ!Box.
5.5
ISDN PBXs on FRITZ!Box
ISDN PBXs can be connected to the ISDN S
0
port “FON S
0
”
of the FRITZ!Box.
The following ISDN services are supported for Internet tele-
phony:
voice, telephony, audio 3.1 and fax G2/G3.
All other ISDN features are supported on the ISDN line. Out-
going connections with these ISDN service indicators are
automatically routed via the ISDN line.
When PBXs are connected, only the ISDN BRI (basic rate in-
terface) is supported.
1.
If not all of your MSNs have been configured in the
PBX, enter your MSNs now. The MSNs must match the
numbers registered in the FRITZ!Box. In the “Telepho-
ny / ISDN Devices” menu, all of the numbers regis-
tered in the FRITZ!Box are displayed in the “Existing
Numbers” list.
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