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Assignment of cables, adapters, and sockets

You want to lay your own cables and connect them to the FRITZ!Box? ✓ Here you will find the assignment of the RJ11, RJ45, and TAE plugs plus adapters and connecting cables.

The FRITZ!Box has various sockets for connecting it to your DSL line and connecting your telephony devices to it. Here you will find the assignment of the cables and adapters included with delivery as well as of the FRITZ!Box's sockets so you can use your own cables, for example.

Note:The FRITZ!Box is available in several different product variants, each of which is delivered with different components. For the exact contents of the package, see the information printed on the FRITZ!Box package.

1 DSL cable (RJ45/TAE)

Pins 4 and 5 on the RJ45 plug lead to Pins 1 and 2 on the TAE plug (see fig.).

Fig.: Assignment of the DSL cable

2 DSL cable (RJ45/RJ11)

Pins 4 and 5 of RJ45 plugs must be assigned. Pins 3 and 4 of RJ11 plugs must be assigned. Since the order does not matter, they cannot be accidentally swapped.

3 "FON S0" socket on the FRITZ!Box

The cables of ISDN devices connected to the "FON S0" socket on the FRITZ!Box must be assigned as follows:

Note:You can have a technician install an S0 interface connected to the "FON S0" socket. The "FON S0" socket is terminated (two 100 Ohm resistors are switched on the "FON S0" socket in the FRITZ!Box).

Fig.: Assignment of the ISDN cable

4 RJ11 sockets of sockets "FON 1" and "FON 2"

The two middle pins 3 and 4 are assigned on the RJ11 sockets.

5 TAE socket of "FON 1" socket

The TAE socket is assigned in such a way that contacts 1 and 2 on TAE plugs must be assigned (see fig.).

Fig.: Contacts 1 and 2 on a TAE plug

6 Telephone adapter

The telephone adapter (TAE/RJ11) has the following assignment:

RJ11 plugTAE socket
Table: Assignment of the TAE/RJ11 adapter