VoIP Protocols Definitions

  • G

    G.711

    G.711 is the default pulse code modulation (PCM) standard for Internet Protocol (IP) private branch exchange (PBX) vendors, as well as for the public switched telephone network (PSTN).

  • G.729

    G.729 is a standard for Internet Protocol (IP) private branch exchange (PBX) vendors, as well as for the public switched telephone network (PSTN)... (Continued)

  • H

    H.245

    H.245 is a protocol for the transmission of call management and control signals in packet-based networks using H.323 equipment.

  • I

    IAX (Inter-Asterisk Exchange Protocol)

    IAX (Inter-Asterisk Exchange Protocol, pronounced "eeks") is a communications protocol for setting up interactive user sessions... (Continued)

  • Q

    Q signaling (QSIG)

    Q signaling (abbreviated QSIG), a protocol for Integrated Services Digital Network (ISDN) communications based on the Q.931 standard, is used for signaling between digital private branch exchanges (PBXs).

  • Q.931

    Q.931 (also called Q93 is a signaling protocol for Integrated Services Digital Network (ISDN) communications that is used in voice over IP (VoIP).

  • S

    SDP (Session Description Protocol)

    SDP (Session Description Protocol) is a set of rules that defines how multimedia sessions can be set up to allow all end points to effectively participate in the session. In this context, a session consists of a set of communications end points along with a series of interactions among them... (Continued)

  • 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.

  • Skinny Client Control Protocol (SCCP)

    Skinny Client Control Protocol (SCCP) is a Cisco proprietary standard for terminal control for use with voice over IP (VoIP).

  • V

    VoIP (voice over IP)

    VoIP enables voice and multimedia communications, such as phone calls, over the internet and other IP-based networks, and allows enterprises to operate a single voice and data network.

  • W

    Words-to-Go: Voice over IP

    Internet Protocol (IP) - method or protocol by which data is sent from one computer to another on the Internet.

  • Z

    ZRTP (Zimmermann Real-Time Transport Protocol)

    ZRTP is an extension of the Real-Time Transport Protocol (RTP) that describes a method of generating cryptographic keys for enhanced communications security and privacy... (Continued)

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