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
Gem Telecom
Gem Telecom offer a range of high quality telephone carrier and VoIP services to its customers around the world. We offer substantial savings on both UK national and international calls.
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