I just got a free tpad.com account, which appears to give me a free SIP trunk (for incoming, and tpad-to-tpad calls)... You get this funky 6 digit "number". Unless you pay, it can't make outgoing calls... BUT... If it's really free for tpad to tpad calls, this might be good for setting up trunk routes between locations (for free), for those who haven't licensed their 3CX setup (or for those that don't want to use their channels on their main VoIP trunks). I'll setup an attendant, with voicemail - and post my tpad # later for those that want to test.