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Knowledge Base document #73

Phone connected to FRITZ!Box is dead

A phone that is connected to the analogue extension of the FRITZ!Box ('FON' port) cannot be used. The phone makes no sound (for example, dial tone, busy signal) when you pick up the handset. The phone is 'dead'.

Simply proceed as described below. After each measure, check whether the problem is solved.

Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.

1 Plugging the FRITZ!Box in

  1. Plug the FRITZ!Box into a socket where other devices work.

2 Installing the latest FRITZ!OS for the FRITZ!Box

  1. Install the latest FRITZ!OS on the FRITZ!Box.

3 Setting up an analogue phone

Only one FON socket can be used

The 'FON' socket has two options for connecting devices: An RJ11 socket and a TAE socket. You can only use one connection option at a time:

Example:
If you connected a phone to the RJ11 socket, you cannot connect a device (for example a fax machine, answering machine) to the TAE socket.

  1. If you connected devices to both of the sockets for the same extension, disconnect one of the devices from the FRITZ!Box.

Testing a different analogue phone

  1. Disconnect the phone from the FRITZ!Box.
  2. Connect a different phone to the same socket on the FRITZ!Box.
  3. If you hear a sound, then the first phone is defective or the phone cable is damaged or incorrectly wired. Test a different cable or contact the manufacturer of the phone.
    • If you do not hear a sound, check whether the plug of the phone is correctly wired. The two inner pins carry the analogue signal of the RJ11 socket 'FON' on the back of the FRITZ!Box.

4 Restarting the FRITZ!Box

  1. Click on 'System' in the FRITZ!Box user interface.
  2. Click on 'Backup' in the 'System' menu.
  3. Click on 'Restart FRITZ!Box' and then on 'Restart'.
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