STWAudio
This class represent all audio output option supported.
LOUDSPEAKER : the default audio option for Video Call,Man down(custom full duplex call) and it can be the default for PTT call(according of the configuration) EARPIECE : the default audio output option for all session except the Video call, and the PTT(according of the configuration), Note For man down call(custom full duplex call) they start with the LOUDSPEAKER Note some device does not support Earpiece like the TeloM6, the Syata 350UVC. HEADSET : when it is plugged audio will be redirected automatically to headset for all ongoing VoIP call event if there is a connected bluetooth accessory. BLUETOOTH : when it is plugged it will be the first priority, audio will be redirected automatically to bluetooth for all ongoing VoIP call.
Priority of Audio output : Bluetooth if connected Headset if plugged Earpiece/Speaker(according on VoIP call type and the configuration for PTT call)
The UNKNOWN is used as an error when there API cannot retreive the audio output option.