Generally you need to route via a VPN to avoid the block that officially has been lifted but which still seems at least partially in place. The simplest way to do that is to use a phone service which inherently routes via your computer, and run the appropriate VPN software on that computer. Skype is one of those services, and certainly seems to be the market leader world-wide. I daresay there are others. Vonage is different in that (usually) it doesn't route via a computer, so applying a VPN becomes technically more challenging. Not impossible, just harder and more costly). If you use their "softfone" service I believe that does route via a computer, but I'm not sure because again it's more costly. But Skype is free to implement, free to use to call another person on Skype, and cheap to call a standard phone line. Just remember that you don't (usually) have a phone number to give to people.