This is a Voice over Internet Protocol (VoIP) and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and Unified Communications facilities
Hosted IP PBX - Business VoIP telephone service for better communication and increased productivity. Enterprise features at a small price. Lower your telecommunication costs with free Internet calls.