Help > Functions and applications > Feature level
Feature level
You can find out the feature level of your PBX here:
•Dashboard > Feature level
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.
*For an upgrade of the feature level and the associated use of additional functions, please contact your specialist dealer or system partner.
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.
*Further help under Firmware Update
You will find out which functions you can use with which feature level and which firmware version in the lists below.
*If the PBX does not yet have the latest firmware, you will find information on the currently available feature levels under Feature level.
Feature level 2 – Version 1.8
OpenVPN Server 
In order to be able to securely connect devices to the PBX, the PBX offers an integrated OpenVPN server.
*Further help under VPN
Google contacts 
The contacts of the PBX can be synchronised with existing Gmail accounts.
*Further help under Contacts/LDAP
Call flow display 
For incoming calls, a COMfortel D-series telephone displays which destination was called (external call number, group, forwarded destination).
*Further help under Incoming Calls
Feature level 2 – Version 1.10
Remote Backup 
A backup can be stored password-protected on an external server and also restored from it.
*Further help under Backup
Feature level 3 – Version 2.0
Call number-dependent ringtones 
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.
*Further help under Ringer tones
Contact image display 
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).
*Further help under Incoming Calls