Operating Instructions and Installation Instructions

FRITZ!Box 7272 26
Connecting to the Landline Telephone Network
Connecting to the ISDN Line
ISDN line
1. Insert the long, gray end of the DSL/telephone cable into
the socket on the FRITZ!Box labeled “DSL/TEL”.
2. Insert the short, black end of the cable into a socket (S
0
interface) on your ISDN NTBA.
If the plug on the cable does not fit into ISDN NTBA, use
the black adapter included in the FRITZ!Box package.
DSL/TEL
FON 1
FON 2
LAN 1
1
LAN 2
2
LAN 3
3
LAN 4
4
Power
FON S
0
Power / DSL
Internet
Fixed Line
DECT
Info
WLAN
WPS
DECT