A system and method of sending and receiving voice calls over the Internet is
described.
The system includes a PSTN-derived intelligent call routing engine that receives
call control messages from the Voice over IP (VoIP) network and routes calls via
previously stored, customized routing procedures. Special dialing plan, 800 numbers,
minimized cost routing, time and day-based least cost routing, transferring, conferencing,
and additional messaging capabilities are provided. The system operates on standard
server computers with interface cards connected to the packetized networks via
TCP/IP and, indirectly, to VoIP gateways to accessing PSTN networks and to virtual
and/or private networks (PBXs).