Unified Communications Definitions

  • O

    ORTC (Object Real-Time Communications)

    ORTC (object real-time communications) is an open source component of WebRTC that enables mobile endpoints to talk to servers and Web browsers with real-time communications capabilities. ORTC is under development by a W3C community group that is supported by vendors including Hookflash, Google and Microsoft.

  • P

    packet loss concealment (PLC)

    Packet loss concealment (PLC) is a technology designed to minimize the practical effect of lost packets in digital communications... (Continued)

  • podcasting

    Podcasting is the preparation and distribution of audio files using RSS to the computers of subscribed users. These files may then be uploaded to digital music or multimedia players like the iPod. A podcast can be easily created from a digital audio file. The podcaster first saves the file as an MP3 and then uploads it to the Web site of a service provider. The MP3 file gets its own URL, which is inserted into an RSS XML document as an enclosure within an XML tag.

  • Premium Rate Service (PRS)

    In the U.K., Premium Rate Service (PRS) is a telephone service that provides recorded information or live conversation for callers similar to 1-900 number service in the U.S. Callers are charged a higher rate on their phone bill, which is then split between the service provider and the network operator who leases the PRS number to the provider.

  • presence leveraging

    Presence leveraging refers to any technology that supports and expands presence, the ability of a network subscriber to locate and identify any other user's computing device as soon as the other user connects to the network... (Continued)

  • presence technology

    Presence technology is a type of application that makes it possible to locate and identify a computing device wherever it might be, as soon as the user connects to the network... (Continued)

  • private branch exchange (PBX)

    A PBX (private branch exchange) is a telephone system within an enterprise that switches calls between enterprise users on local lines while allowing all users to share a certain number of external phone lines.

  • 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).

  • QoS (Quality of Service)

    On the Internet and in other networks, QoS (Quality of Service) is the idea that transmission rates, error rates, and other characteristics can be measured, improved, and, to some extent, guaranteed in advance.

  • R

    R-value

    R-value is a number, or score, that is used to quantitatively express the subjective quality of speech in communications systems, especially digital networks that carry voice over IP (VoIP) traffic, or for which VoIP service is under consideration.

  • real-time application (RTA)

    A real-time application (RTA) is an application program that functions within a time frame that the user senses as immediate or current. The latency must be less than a defined value, usually measured in seconds... (Continued)

  • real-time communications (RTC)

    Real-time communications (RTC) is any mode of telecommunications in which all users can exchange information instantly or with negligible latency. In this context, the term "real-time" is synonymous with "live." (Continued)

  • real-time communications dashboard (RTCD)

    A real-time communications dashboard (RTCD) is an application designed to facilitate efficient, convenient real-time communications (RTC) in a business environment. RTC is any mode of telecommunications in which all users can exchange information instantly or with negligible latency... (Continued)

  • 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.

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