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Updated guide: Now also explains how incoming calls with a request can be forwarded internally.
(08.06.2020)
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To be clear, a FritzBox can easily act as a SIP registrar and thus integrate VoIP phones just like ISDN or analog phones used to. However, the range of functions of the FritzBox is unfortunately not comparable with that of a professional telephone system (PBX).
This article is based on a test on a FritzBox 7390. It was tested on a Telekom All-IP connection.
If you want to connect a new Fritzbox to a Snom phone and need help setting up the Internet access, you can find a small guide in this article.
The configuration of the Snom phone on the FritzBox is relatively simple. First you have to create a new telephony device in the FritzBox - type is IP phone.
The user name and password are important here.
You should only allow registration from the Internet if you really need it. This is not necessary for an IP phone behind the Fritz Box and should therefore remain deactivated for security reasons.
With the installation of the Fritzbox, most of the installation is done. Now all you have to do is set up the Snom Phone.
Please make sure your phone is set up correctly.
Please check in advance that your phone has the latest stable firmware version installed.
If the phone has been in use before, please reset it to factory defaults to avoid that previous settings prevent a correct functioning of the phone.
Since auto provisioning is not supported by the Fritzbox, the Snom Phone needs to be set up using its web user interface (WUI). To access the phone, type the IP address of your phone into your internet browser (e.g. http://192.168.1.100). To find out the IP address of your phone press the Configuration key (gear wheel symbol) → "Information" → "System information".
For more Information, click here.
If you now click the button "accept" below, your Snom Phone should work immediately.
The basic setup is now complete.
or the telephone / web interface language under the menu item: "Preferences".
By default, the phone and web interface language is English.
If you now click the button "accept" below, your Snom Phone should work immediately.
Want to transfer incoming calls to other phones internally that are also connected to the Fritzbox? Here we explain what we found out.
If you have configured all Snom phones connected to the Fritzbox as shown, you need to do the following to transfer the incoming calls internally to another phone:
If you prefer a simpler solution instead of always typing the internal extension number (e.g. **620), you can create the extension number to your colleagues in the WUI of the Snom phone under "Function keys". Either as "Direct dial" or as "BLF" (Busy Lamp Field). Both will work.
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