FRITZ!Box 7390 Service - Knowledge Base

FRITZ!Box 7390 Service

Making telephone calls with FRITZ!Box through a cable modem

With an additional cable modem, you can also use the FRITZ!Box on a cable connection. If you connect your telephones to the FRITZ!Box, you can use all of the internet telephony providers from which you received login data for internet telephone numbers. The internet telephone numbers can either be from your cable provider or from a different internet telephony provider. You can also connect the FRITZ!Box to the cable modem if your cable provider allows you to use the modem for telephony.

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

1 Configuring the FRITZ!Box for internet telephony

Enter the login data for the internet telephone numbers in the FRITZ!Box as follows:

  1. Configure the internet telephone numbers in the FRITZ!Box.

2 Setting up the FRITZ!Box for landline telephony

The following steps are only necessary if the cable modem has a port to which you can connect analog telephony devices and it has been enabled:

Connecting the FRITZ!Box

  1. Plug the longer end of the DSL/telephone cable ("Y cable") included with delivery into the socket labeled "DSL/TEL" on the FRITZ!Box.
  2. Plug the black plug on the split end of the cable into a telephone socket on the cable modem.

    Important:When using the FRITZ!Box with a cable modem, you can only use one of the telephone ports. You can connect a further telephony device, for example a telephone, to the second telephone socket on the cable modem. If the plug on the DSL/telephone cable does not fit into the port on the cable modem, refer to your cable provider for a suitable adapter.

Enabling the landline settings

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephone Numbers" in the "Telephony" menu.
  3. Click on the "Line Settings" tab.
  4. Enable the option "Landline enabled".
  5. Click "Apply" to save the settings.

Entering a telephone number

  1. Click "Telephony" in the FRITZ!Box user interface.
  2. Click "Telephone Numbers" in the "Telephony" menu.
  3. Click the "New Telephone Number" button.
  4. Enable the option "Landline number".
  5. Enable the option "one landline number (analog line)" and click "Next".

    Important:You are only asked to select the type of landline (analog or ISDN line) when you configure the first landline number. If you want to change the connection type later, you must delete all of the landline numbers you configured first.

  6. Enter your telephone number and click "Next".

    Note:It may be possible to use both lines of your cable modem with a FRITZ!Box. For further information, refer to your cable provider directly.