Low cost SIP VoIP provider. SIP Trunk and IP Centrex offers. Call and send SMS for free or at very low cost
ippi.com likes to be a SIP provider. He is offering flat rates, which includes Austria mobile (Unlimited Elite – 150 landlines & mobiles destinations). After a few days and 21 calls, totaling 1 hour 29 minutes and 3 seconds, later Austria mobile destinations have not been reachable already – SIP response: "Forbidden"
This guy even offers SIP Trunks, but does not know the difference between a SIP Trunk and a SIP User connection by himself.
If you order different DID numbers from this guy, you have a lot of programming work, because he does not transmit the caller id correct. You have to read and write the PAI (P-Asserted-Identity) for getting the caller id.