CallSettings

Optional. Whether to use H264 video codec, if exists

Optional. Custom string associated with the call session. It can be passed to the cloud to be obtained from the CallAlerting event or Call History via the HTTP API. Maximum size is 200 bytes. Use the Call.sendMessage method to pass a string over the limit; in order to pass a large data use media_session_access_url on the backend.

Optional. Custom parameters (SIP headers) that should be passed with call (INVITE) message. Parameter names should start with "X-" to be processed by application. IMPORTANT: Headers size limit is 200 bytes.

The number to call. The international format E.164 is preferable

Optional. Whether to support video for the call