Are you considering voice over Internet protocol (VoIP) for your organization? We’ll take a comprehensive look at how VoIP works, and what you should know before selecting a VoIP vendor.
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and required a substantial knowledge of protocols, definitions, recommendations, and standards such as inter-asterisk exchange (IAX), SIP, H.323, H.225, real-time transport protocol (RTP/RTCP), remote function call (RFC) 3550, H.245, H.501, H.450, H.460, T.120, T.38, Skinny Call Control Protocol (SCCP), Unified Networks IP Stimulus (UNIStim), and more. Eventually several of the critical protocols were merged into one, the SIP. Prior to VoIP, one's telephone number was assigned to a physical location. One