Using "LibreSignal" from eutopia.cz/experimental/fdroid/repo Version: 3.3.1-websocket Calling does not work between websocket and GCM, I have not tested websocket <--> websocket, gcm <--> gcm works. On the GCM end, the call continues to ring until failure. On the websocket end, the call starts and then immediately fails. Any idea if this will ever work?