As most of you are probably aware, the App store forbids VOIP over 3g. Well there is a nice app in the cydia store that changes that. VoipOver3G. Unitil now I have had no issues making it work with "iSip"
Since the release of 3.0 (Aug 21, 1009) & as of now I am unable to make sip calls over 3g.

I sent an email to support, they indicated that the bundle name has not changed so that means the voipover3g.plist does not change. Support did indicate "we changed the way to detect network, maybe this caused this. We check interface en0 to see if this wifi or not, do you know if that app can simulate en0?"
Is there a way to simulate wifi for en0?

Hi, please when you get the answer, post here, i'm trying to use it using my 3G connection.

Thanks Buddy !

Luiz Felipe
Brazil

Hey, now im able to make calls using 3G connection ! just use the 3G Unrestrictor and add isip(Sipphone) on the list ! and after restart you will be able to make calls using your 3g connection !

To install 3G unrestrictor you just go to cydia and go to bigboss source ! This software is payed.

Thanks !

Luiz Felipe
Brazil