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
The SIPMarket Trade System allows to make phone calls via the Internet at wholesale prices. The intellectual system for choice of an operator automatically forms a list of the most profitable gateways for the requested destination at every call. Moreover,
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