Unified Communications Definitions

  • R

    regional Bell operating company (RBOC)

    Regional Bell operating company (RBOC) is a term describing one of the U.S. regional telephone companies (or their successors) that were created as a result of the breakup of American Telephone and Telegraph Company (AT&T, known also as the Bell System or "Ma Bell") by a U.S. Federal Court consent decree on December 31, 1983. The seven original regional Bell operating companies were Ameritech, Bell Atlantic, BellSouth, NYNEX, Pacific Bell, Southwestern Bell, and US WEST. Each of these companies owned at least two Bell operating companies (Bell operating company).

  • registration, admission, and status (RAS)

    Registration, admission, and status (RAS) is a component of a network protocol that involves the addition of (or refusal to add) new authorized users, the admission of (or refusal to admit) authorized users based on available bandwidth, and the tracking of the status of all users.

  • rich presence technology (RPT)

    Rich presence is an enhanced form of presence awareness in which participants can determine if other users are online and if so, observe to a limited extent what they are doing and how they are doing it... (Continued)

  • RoundTable

    Microsoft RoundTable is a videoconference device designed to simulate in-person meetings... (Continued)

  • 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.

  • 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 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.

  • Signalling Connection Control Part (SCCP)

    Signalling Connection Control Part (SCCP) is a portion of International Telecommunication Union (ITU) recommendation Q.711, which is the routing protocol for Signalling System 7 (SS7), a set of protocols used to set up calls in telephony networks.

  • SIP trunking (Session Initiation Protocol trunking)

    Session Initiation Protocol (SIP) trunking is the use of voice over IP (VoIP) to facilitate the connection of a private branch exchange (PBX) to the Internet.

  • 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).

  • Skype for Business

    Skype for Business, formerly known as Microsoft Lync Server, is a unified communications (UC) platform that integrates common channels of business communication and online meetings, including instant messaging (IM), presence, voice over IP (VoIP), video conferencing, file transfer, web conferencing, voicemail and email.

  • 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).

  • softphone (soft client telephone)

    A softphone (software telephone) is an application program that enables voice over Internet Protocol (VoIP) telephone calls from computing devices. In the enterprise, softphones are sometimes referred to as soft clients.

  • SPIT (spam over Internet telephony)

    SPIT (spam over Internet telephony), sometimes known as vam (voice or VoIP spam), is unsolicited bulk messages broadcast over VoIP (Voice over Internet Protocol) to phones connected to the Internet.

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