Specifications

FRITZ!Box Fon WLAN 7270 26
Connecting to the ISDN Line
The green “Power” LED stops flashing after a short time
and remains lit to signalize that FRITZ!Box is ready for In-
ternet connections over DSL.
3.7 Connecting to the ISDN Line
Your telephone line is either an analog line or an ISDN
line.
If you have an ISDN line, read here how to connect the
FRITZ!Box with the ISDN line.
Connecting to the ISDN NT
Connecting Set aside the Y-shaped cable (gray-black) delivered in the
package. This cable is a combined DSL/telephone cable.
1. Connect the longer gray end of the cable to the sock-
et on the FRITZ!Box labeled “DSL/TEL”.
2. Insert the black end of the Y-branch of the cable into
the socket of your ISDN NT. If the end of the cable
does not fit into the socket on the splitter, insert the
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