Diamondcard service is a complete VOIP service which enables customers to make local and international calls at a fraction of what their local telephone company charges.

The service incorporates the latest cutting edge telecommunications and open source technology.

International personal number forwarding and routing, voice mail, unlimited accounts, simultaneous call capabilities, PBX integration, prepaid calling card and call shop platforms, IAX windows softphone, Linux softphone integration and reseller system platform.

site link: http://www.diamondcard.us/