Hongtian wrote:
[color=blue]
> If you have MS-Windows based computers, I suggest you can try
> miniSipServer and X-lite to setup your own VOIP network. But before
> that, you shall confirm that VOIP is permitted in your country.[/color]

What about setting up a Virtual Private Network between the two PCs (or more
generally between the private LANs at the two addresses). This is a
Networking matter rather than VoIP, but it is relevant as it then makes the
end to end VoIP almost trivial.

If you are using a private network (which in effect you are over a VPN) you
don't need to worry (from a technical viewpoint) about anything in the
middle. If the VPN works at all, it should work for all traffic as the
traffic is encrypted and not viewable by entities in the middle. This also
enhances the privacy of the call.

There may be legal aspects (DYOR; I am Not a Lawyer) but technically I can't
see why a private VoIP network would ever NOT be protected by VPNs.