...months ago they bought them. As far as maemo incompatibilities, they do not exist. Either gizmo5 sip server was having issues, your sip info is set up incorrectly/incompletely, you are having router/NAT issues, or a combination of all the above. Check out your advanced options in RTCOMM and see if you have a STUN server set up for G5, it seems to help NAT problems. If you set up gizmo5 with sipphone presets in maemo the stun server should be auto set for you. Good Luck!