I've found a strange bug with the latest version. I'm using Callcentric as my SIP outbound provider. When I call ATT (1-877-722-3755), 3xcphone switches to the "connected" mode, and I get the toggle for switching between earpiece and speaker. When I call Charles Schwab (1-888-403-9000), the connection is made, but 3cxphone doesn't detect that it is connected. Audio seems to be coming from the speaker, and representatives cannot hear me.