Starts the audio for the established call. This method should be called after NoType:android/net/sip/SipAudioCall$Listener;Href=../../../../reference/android/net/sip/SipAudioCall.Listener.html#onCallEstablished(android.net.sip.SipAudioCall) is called.

Note: Requires the NoType:android/Manifest$permission;Href=../../../../reference/android/Manifest.permission.html#RECORD_AUDIO, NoType:android/Manifest$permission;Href=../../../../reference/android/Manifest.permission.html#ACCESS_WIFI_STATE and NoType:android/Manifest$permission;Href=../../../../reference/android/Manifest.permission.html#WAKE_LOCK permissions.

[Android Documentation]