SIP and Unified Communications Standards Definitions

  • C

    codec

    A codec is either a hardware device or a software-based process that compresses and decompresses large amounts of data used in voice over IP, video conferencing and streaming media.

  • G

    G.723.1

    G.723.1 is a standard for digital communications that employs 16-bit pulse-code modulation (PCM) at 5.3 or 6.3 kilobits per second (Kbps) with an input sample rate of 8 kilohertz (kHz)... (Continued)

  • R

    Real-Time Transport Control Protocol (RTCP)

    Real-Time Transport Control Protocol (RTCP) is a protocol that works with Real-Time Protocol (RTP) to monitor data delivery on large multicast networks, mainly for streaming media, telephony and video conferencing.

  • S

    scalable video coding (SVC)

    Scalable video coding (SVC) is an extension of the H.264 (MPEG-4 AVC) video compression standard for video encoding.

  • Session Announcement Protocol (SAP)

    Session Announcement Protocol (SAP) is a protocol used to define the format and describe the information that will be exchanged during a multicast conferencing session. 

  • Session Initiation Protocol (SIP)

    Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, modifying and terminating real-time sessions that involve video, voice, messaging and other communications applications and services between two or more endpoints on IP networks.

  • Skype protocol

    Skype protocol is a peer-to-peer Internet telephony protocol used to move encrypted voice over IP (VoIP) traffic between Skype members' computers (peers).

  • T

    T.38 fax over IP (FoIP protocol)

    T.38 is a protocol for sending faxes over a voice over IP (VoIP) network or the Internet in real time.

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