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Knowledge Base document #71

Conducting internal calls

If several phones are connected to your FRITZ!Box, you can conduct (free) internal calls between the phones. For example, you can use a cordless phone to call a phone connected to an analogue extension of the FRITZ!Box.

If you have configured an additional FRITZ!Box for telephony in the Mesh, you can also make internal calls between phones on the Mesh Master and on the Mesh Repeater.

1 Conducting internal calls

  1. If you want all of the phones connected to the FRITZ!Box to ring, enter **9 to make a broadcast call. You then conduct the call with the party who answers the phone first.
    • If you want several phones connected to the FRITZ!Box (call group) to ring, enter ** followed by the quick-dial number of an internal call group, for example 701. You then conduct the call with the party who answers the phone first.
    • If you want a specific phone to ring, enter ** followed by the internal number of the phone. You can also use the 'INT' key on a FRITZ!Fon.

      Example:
      To transfer the call to the first cordless phone, enter **610.

      Note:You can find the internal numbers of the telephony devices under 'Phone Book > Internal Numbers' in the user interface of the FRITZ!Box.

2 Preparations

Telephones that are connected to the 'FON S0' socket on the FRITZ!Box either directly or via an ISDN phone system (PBX) cannot automatically be reached internally. Although the FRITZ!Box assigns an internal number to the phones during setup, this phone number must still be assigned in the phone or the phone system:

Configuring a phone in the FRITZ!Box

  1. Click on 'Telephony' in the FRITZ!Box user interface.
  2. Click on 'Telephony Devices' in the 'Telephony' menu.
  3. Configure all of the phones connected to the 'FON S0' socket as ISDN phones. To do so, click the 'Configure New Device' button and follow the instructions.
  4. If you connected an ISDN phone system to the FRITZ!Box, also configure all of the analogue phones connected to this phone system as ISDN phones in the FRITZ!Box. To do so, click the 'Configure New Device' button and follow the instructions.

Assigning an internal number in the FRITZ!Box

  1. Click on 'Telephony' in the FRITZ!Box user interface.
  2. Click on 'Telephony Devices' in the 'Telephony' menu.
  3. Click the (Edit) button for the relevant ISDN phone.
  4. Select the internal number, for example 52, from the drop-down list 'Number of the terminal device'.
  5. Click on 'Apply' to save the settings.

Assigning an internal number in a phone

  1. Assign the internal number to the ISDN phone as the incoming phone number. If the phone is connected to a phone system, assign the phone number to the extension of the phone system instead of to the phone.



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