Connecting to the ISDN Line
FRITZ!Box 24
Connecting 1. Connect the longer of the two gray branches of the ca-
ble to the socket labeled “DSL/TEL”, located at the far
left of the back panel of the FRITZ!Box.
2. Then connect the other end of the cable to the socket
on the DSL splitter labeled “DSL”. If the end of the ca-
ble does not fit into the socket on the splitter, insert
the end of the cable into the gray RJ45-RJ11 adapter in-
cluded in the package and then insert the adapter into
the socket on the DSL splitter.
The black branch of the cable is for the fixed-network
telephone line (see the section “Connecting to the
ISDN Line” on page 24 or the section “Connecting with
the Analog Telephone Line” on page 25).
The green “Power” LED stops flashing after a short time and
remains lit to signalize that FRITZ!Box is ready for Internet
connections over DSL.
2.8 Connecting to the ISDN Line
You only have to connect the FRITZ!Box with the ISDN line if
you have an ISDN line and want to use the FRITZ!Box for ISDN
fixed-line telephony.
Connecting to the ISDN NT
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