makeCall method
Initiates an outgoing call to the specified callee.
Parameters:
callee: The SIP URI or phone number to callsendSdp: Whether to send SDP in the INVITE requestvideoCall: True for video call, false for audio-only
Returns the session ID (>= 0) on success, negative error code on failure.
Implementation
Future<int> makeCall({
required String callee,
required bool sendSdp,
required bool videoCall,
}) async {
throw UnimplementedError('makeCall has not been implemented.');
}