Start an outgoing call to the specified Voximplant user in peer-to-peer mode. The JavaScript scenario with this method and the destination user should be both within the same Voximplant application. Audio playback and recording does not work. P2P mode is available only for calls between SDKs. The method can trigger the CallEvents.Failed event in 60 sec, see the session limits for details. IMPORTANT: calling this method makes impossible to use the non-P2P mode for a new call and specified incomingCall. So the following methods cannot be used: Call.say, Call.sendDigits, Call.sendMediaTo, Call.stopMediaTo.