Certificates
External connections are encrypted to prevent listening in. The processes used to set up and shut down a connection, and signalling, are all encrypted by SIPS.
Configuration
With the Configuration Manager:
Identities > Options for experts > SIPS
Identities > Options for experts > Certificate
Identities > Options for experts > Check hostname
* For more information, see Options for experts.
Or directly on the phone:
Settings > Identities > Security > SIPS
Settings > Identities > Security > Certificate
Settings > Identities > Security > Check hostname
* For more information, see Security.
Or using provisioning:
For more information, see the Auerswald DokuWiki.