Today I spent hours and hours trying to get SipDroid working with 12voip, a betamax VOIP service. But I couldn’t get it to connect. I tried the settings given in 12voip sip settings page (server : sip.12voip.com) and then some other servers I came across while looking for a way to get it working (i.e connectionserver2.12voip.com etc.) but none of them worked. Then I came across this blog post which explains how to tunnel your sip calls though pbxex.org to 12voip (or any betamax service for that matter). However there is a delay/lag of a couple of seconds , but call quality is pretty good. The lag is annoying at times, but I guess its better than nothing. If any of you have managed to get 12voip or any other betamax service with SipDroid (or any other SIP client) directly, please post here.