Here are descriptions of the more relevant changes in EVSS 3.1
Added compatibility with RFC 6188: audio data can be encrypted with AES-128 or AES-256, depending on endpoints:
A new icon in notification bar constantly inform use if PrivateGSM is currently connected to PrivateServer and ready to receive secure calls.
It is now possible to configure a data retention policy for different types of historical data, then they are automatically archived on file system and removed from operational database. Administrator can dis/enable data archival and configure the retention period to keep historical data online. Archived data can be exported/downloaded and removed from PrivateServer.
This version enables by default 1 month of data retention for SIP Sessions data, which are generally useful only for debugging and support purposes: if you want more, please change configuration.
It is possible to configure RPM packages repositories, verify if there are some updates available and upgrade PrivateServer from web console