Note: Various settings are automatically set via provisioning by the PBX and should not be changed. Some of these settings are only visible via the backup file (*.xml): port, STUN server, DTMF method, country, area code
The calls are encrypted to prevent eavesdropping. The connection setup and termination, and also call signalling, are encrypted with SIPS. The call data is encrypted with SRTP.
Note: The setting must match the setting in the PBX.