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Knowledge document #1224

Cannot register FRITZ!DECT Repeater

Registration of a FRITZ!DECT Repeater to a FRITZ!Box fails. After the automatic configuration, the DECT LED on the repeater flashes continuously and the DECT connection between the FRITZ!Box and repeater is not established.

Here we show you how to correct this problem if you are using a FRITZ!Box as the access point. However, you can also register the FRITZ!DECT Repeater with a base station from another manufacturer.

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 Maximum number has been reached

You can register up to six FRITZ!DECT Repeaters with the FRITZ!Box. If you have already registered six repeaters, you cannot register any more repeaters.

Note:Registering a FRITZ!DECT Repeater does not reduce the number of other devices, for example telephones or radiator controls, that can be registered.

2 Unlocking the buttons

  1. Click "System" in the FRITZ!Box user interface.
  2. Click "Buttons and LEDs" in the "System" menu.
  3. Click on the "Keylock" tab.
  4. Disable the "Buttons locked" checkbox.
  5. Click "Apply" to save the settings.

3 Installing the latest FRITZ!OS

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

4 Disabling "Reduce DECT field strength"

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "DECT" in the "Telephony" menu.
  3. Disable the option "Reduce DECT field strength" in the section "Radio Field Strength".
  4. Click "Apply" to save the settings.

5 Disabling "DECT Eco"

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "DECT" in the "Telephony" menu.
  3. Disable the option "DECT Eco" in the section "Radio Field Strength".
  4. Click "Apply" to save the settings.

6 Enabling encryption

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "DECT" in the "Telephony" menu.
  3. Enable the option "Permit only secure DECT connections (recommended)" in the section "Security".
  4. Click "Apply" to save the settings.
  5. If the option was disabled, you must then restart the FRITZ!Box once using the user interface ("System > Backup > Restart").

7 Setting a PIN

For automatic registration to work, you must set the PIN to "0000" in the FRITZ!Box user interface:

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "DECT" in the "Telephony" menu.
  3. Enter "0000" as the PIN in the section "Registration".
  4. Click "Apply" to save the settings.

8 Re-registering the FRITZ!DECT Repeater

Deregistering the FRITZ!DECT Repeater

  1. Push and hold down the DECT button on the FRITZ!DECT Repeater twice in a row for at least 6 seconds each time.

The DECT LED flashes as soon as the FRITZ!DECT Repeater is deregistered.

Restarting the FRITZ!Box

  1. Click "System" in the FRITZ!Box user interface.
  2. Click "Backup" in the "System" menu.
  3. Click on the "Restart" tab.
  4. Click the "Restart" button.

Establishing a DECT connection

  1. Plug the FRITZ!DECT Repeater into a power outlet near the FRITZ!Box.
  2. Click "Smart Home" in the FRITZ!Box user interface.
  3. Click "Device Management" or "Devices and Groups" in the "Smart Home" menu.
  4. Click the "Register Device" button.
  5. Within 2 minutes: Push the DECT button on the repeater. Hold down the button for at least 6 seconds until the DECT LED starts to flash quickly. The repeater is in registration mode as long as the LED flashes quickly.
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