Quote Originally Posted by genxweb View Post
Many countries over seas such as China are blocking the voip ports as they have laws that require all communication to go through their companies for one reason or another that is why you see issues many time. The easiest way around this is to have a client to site or site to site vpn with either a provider or your own server located in a country that does not block voip.

This is usually not a inbound call issue as china would not really know if your call is voip or not as you most likely are begin terminated over a ptsn at the far end before the final leap unless you are doing sip calling.
This is completely possible to encapsulate the network traffic -- however does not void the legalities of it in the nation itself. There are plenty of countries with similar laws and offenders are prosecuted pretty harshly. Just look into some of the cases where parties have setup VoIP to GSM gateways using local wireless providers / SIM cards to transport traffic.

This is also a reason why some international routes can be night and day operations as far as allowing traffic to pass through said gateway.

Just my 2 cents .