You can find out the feature level of your PBX here:

Some functions depend on the feature level of the PBX. If there is a difference between the current feature level of the PBX and the maximum possible feature level, the full range of functions of the PBX cannot be used.

If the PBX has the maximum feature level and not all functions are available, check the firmware version and, if necessary, carry out a firmware update.

You will find out which functions you can use with which feature level and which firmware version in the lists below.

In order to be able to securely connect devices to the PBX, the PBX offers an integrated OpenVPN server.

The contacts of the PBX can be synchronised with existing Gmail accounts.

For incoming calls, a COMfortel D-series telephone displays which destination was called (external call number, group, forwarded destination).

A backup can be stored password-protected on an external server and also restored from it.

On telephones that can process the transmitted information (COMfortel D-series telephones, firmware version 2.6B or later), it is possible to distinguish not only the call types but also the calling and called numbers on the basis of the ringtones.

For incoming calls, contact pictures of the callers can be displayed on a COMfortel D-series telephone (COMfortel D-400/D-600, firmware version 2.6B or later).