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Knowledge document #180

Telephone does not ring when you receive a call

One or more of the telephones connected to the FRITZ!Box doesn't ring when someone calls you? ✔ Here's what to do.

One or more of the telephones connected to the FRITZ!Box sometimes do not ring or never ring when you receive a call, although you can make calls.

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

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

1 Assigning telephone numbers to telephones

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephony Devices" in the "Telephony" menu.
  3. Click the (Edit) button for the respective telephone.
  4. Configure the telephone so that it reacts to incoming calls to the desired telephone number: Enter the number under "Outgoing calls" or "Incoming calls", or enable the option "React to all numbers".
  5. Click "OK" to save the settings.

2 Maintaining a permanent internet connection

Calls to your internet telephone number can only reach the FRITZ!Box if an internet connection is active. Therefore, configure the FRITZ!Box so that it maintains a permanent internet connection:

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "Account Information" in the "Internet" menu.
  3. Click "Change connection settings".
  4. Enable the option "Maintain permanently (recommended for flat rates)". If the option is not shown, the FRITZ!Box is already permanently connected to the internet.
  5. Click "Apply" to save the settings.

3 Having your numbers checked

If the telephone still does not ring when you receive calls to an internet telephone number although the internet connection and internet telephone number were configured correctly, your internet telephony provider is experiencing a problem:

Important:After porting telephone numbers (for example after switching to an IP-based connection), telephone numbers can often be used immediately for outgoing calls. However, you cannot receive calls to these numbers for one or two days because the telephone numbers are not completely ported until then.

  1. Contact your internet telephony provider and have your number checked.
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