Operation Manual

FRITZ!Box Fon WLAN 7570 vDSL 28
Connecting ISDN PBXs
3.12 Connecting ISDN PBXs
If you have an ISDN PBX, you can connect this PBX to the
FRITZ!Box. With the telephones connected to the PBX you
can make calls both via the Internet and via the fixed-line
network.
Connecting an ISDN PBX to the FRITZ!Box
Connecting Use an ISDN cable to connect an ISDN PBX.
1. Connect one end of the ISDN cable with the ISDN PBX.
2. Connect the other end of the ISDN cable with the “S
0
-
int” port of the FRITZ!Box.
The ISDN PBX must support a point-to-multipoint line.
If you have no more than two analog devices con-
nected to the PBX, you can connect them directly to
the FRITZ!Box and do without the PBX.