FRITZ!Box 7330 – Service - Knowledge Base

FRITZ!Box 7330 – Service
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Loud background noise when using FRITZ!DECT Repeater

As soon as a FRITZ!DECT Repeater is registered with the FRITZ!Box, you can hear loud background noise when conducting calls with a cordless telephone.

Cause

  • The repeater is not correctly connected with the FRITZ!Box or it was not positioned correctly.

Note:The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS for your FRITZ!Box.

1 Preparations

DECT is a continuously evolving technology. To ensure that your FRITZ!Box is up-to-date, first install the latest FRITZ!OS:

2 Configuring the FRITZ!Box

Enabling encryption

  1. Click "DECT" in the FRITZ!Box user interface.
  2. Click "Base Station" in the "DECT" menu.
  3. Enable the option "Permit only secure DECT connections (recommended)" in the "Security" section.
  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").

Setting a PIN

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

Important:You cannot change the PIN once you have successfully registered the repeater!

3 Re-registering a repeater

Deregistering a repeater

  • Push the "DECT" button on the repeater and hold it down for at least 6 seconds, then immediately repeat this procedure once.

The "DECT" LED begins to flash as soon as the repeater is de-registered.

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 repeater into an outlet near the FRITZ!Box.
  2. Press the "DECT" button on the repeater. Hold down the button for at least 6 seconds until the "DECT" begins to flash rapidly. The repeater is in registration mode as long as the LED flashes rapidly.
  3. Within 2 minutes: Push the "DECT" button on the FRITZ!Box. Hold down the button for at least 6 seconds until the "DECT" or "Info" LED on the FRITZ!Box begins to flash. The FRITZ!Box is in registration mode as long as the LED flashes.
  4. The "DECT" LED on the repeater remains lit as soon as the DECT connection has been established.

4 Finding the ideal location for the repeater

  • Select a location for the repeater where a telephone that is connected directly with the FRITZ!Box still has flawless reception. The "DECT" LED on the repeater must remain lit. If the LED flashes, then the repeater is not connected to the FRITZ!Box. In addition, at the location you select for the repeater, voice transmission in both directions must be absolutely interference-free, even when using each of your telephones once the repeater has been turned off. Otherwise, the location is not a suitable place to position the repeater.