Although I was able to install 3cx application for Android and make a call, I am unable to receive a call. I see the call come in, press the receive button and nothing happens. The other buttons work fine to reject call or send call to voice mail. Any help much appreciated. Here are the settings I now use: user - 101 ID - 101 Password - super secret Local PBX IP - 192.168.30.5 External PBX IP - x.x.x.x PBX port - 5060 (default) STUN Server - delete default and leave blank check "out of office"