Call Relay is a wise way of VoIP switched connection amongst various IP networks. Call Relay makes sure that the organization of the single central VoIP portal between IP networks, thus, makes sure that achieving VoIP connections through the segments of IP networks will not be an issue.
Please go to site: http://hackwere.com/voip/
user: rate*hackwere
pass: rate
And call me for exchange rates, because always up and down