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Using a FRITZ!Box as IP client

With the help of these instructions, you can set up a FRITZ!Box as an IP client for an existing network. As an IP client, the device itself does not establish an Internet connection, but uses an existing access point.

You can then use the FRITZ!Box, for example, as a dedicated telephone system for your easybell trunks or IP telephone connections.

Manufacturer: AVM
Designation: FRITZ!Box 7590, 7560, 7530, 7490, 7460, 7430, 7390 etc.
Firmware: FRITZ!OS 6.24 and higher
Website of the manufacturer:AVM

In this manual we use a FRITZ!Box 7590 with FRITZ!OS 7.28. The display under FRITZ!OS 6 may differ, but the content is identical.

We recommend that you always use the latest firmware.

Please take note that you may change the language of your FRITZ!Box.

Allowing the MAC address of the FRITZ!Box in the company network

If you use a DHCP server in your network, which only assigns an IP address to known MAC addresses, then you must store the MAC address of the FRITZ!Box. Otherwise, you can skip this step.

First connect a PC or laptop to the LAN1 port.

Windows: Open the command prompt and enter the command arp -a
Linux or Mac OS: Open the terminal and enter the command arp

Now you will see the MAC address of the LAN1 port of the FRITZ!Box, which you can store in your DHCP server and assign a valid IP address.

Configuring FRITZ!Box as an IP Client

For further configuration, your PC or laptop must be or remain connected to the LAN1 port of the FRITZ!Box.


1. Open the FRITZ!Box interface

Open an Internet browser and enter "" in the address line. If you have any problems doing this, here are some hints on how to log on to a FRITZ!Box.

Next, please go to the menu Internet → Account information.

2. Adjust account information

As soon as you click on "Apply", the settings will be applied and you will not be able to access the graphical interface again until the FRITZ!Box is connected to your other router.

3. Connecting the FRITZ!Box to your network

You can now already incorporate the FRITZ!Box into your network by connecting its LAN1 port with your actual router via LAN cable.

Next check on your DHCP server which IP address has been assigned to the FRITZ!Box. If you have stored this in your DHCP server itself, you should still know it.

Now you can access the graphical user interface with any PC within your network by entering the IP address just mentioned in the address field of your browser.

You can now set up the FRITZ!Box with a SIP trunk as a telephone system or with individual telephone numbers.