SIP protocol was made within IETF (Internet Engineering Task Force) – organization occupied with establishing Internet standards and general standards concerning TCP/IP protocols.
TelAppliant
Telappliant is the UK and European provider of low-cost IP Telephony solutions for your business. We can rapidly deploy a wide range of advanced and cost-effective VoIP solutions and services, ranging from office IP PBXs to bespoke Calling Card Platforms
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