PortSIP UC extends enterprise telephony features and functions to packet telephony network devices. These packet telephony network devices include IP Phones, media processing devices, VoIP E1/T1 gateways, and multimedia applications. Additional data, voice, and video services, such as converged messaging, multimedia conferencing, collaborative contact centers, and interactive multimedia response systems, interact with the IP telephony solution through the PortSIP VoIP SDK, Rest API, WSI(WebSocket Interface).