I have to used VoipBuster as a SIP service for a long time now.

It worked out of the box on the N900.

I have switched to VoipBlast (www.voipblast.com) but somehow, my N900 doesn't want to connect to VoipBlast.... Same as for VoipWise (www.voipwise.com).

Does someone knows why?

They all offer SIP... Only VoipBuster worked for me....

Any help would be very appriciated!

Thanks