Send a signaling stanza produced by the VoIP engine.
xmlPayload is the encoded inner child of the <call> stanza (offer, accept, terminate, mute_v2, ...)
xmlPayload
<call>
WAWebVoipSendSignalingXmpp
Send a signaling stanza produced by the VoIP engine.
xmlPayloadis the encoded inner child of the<call>stanza (offer, accept, terminate, mute_v2, ...)