Video Conferencing Resources – R

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Rate Adaptation

The process of converting a digital stream of data into a different format and rate. (For example, this allows 64 kbps data to interoperate with 56 kbps data.)

Real-Time

The processing of information that returns a result so rapidly that the interaction appears to be instantaneous. Videoconferencing is an example of a real-time application. This kind of real-time information not only needs to be processed almost instantaneously, but it needs to arrive in the exact order it's sent. A delay between parts of a word, or the transmission of video frames out of sequence, makes the communication unintelligible.

Receiver (Rx)

An electronic device, which enables a particular videoconference signal to be separated from all others being received by an earth station, and converts the signal format into a format for video, voice or data.

Rich Media Conferencing (RMC)

RMC takes advantage of the Internet's reach, interactivity and ability to integrate multiple forms of media to add the extra dimension of context and personalization that takes you one step closer to a true 'virtual' meeting environment.

Room (Group) Based Videoconferencing

Videoconferencing using a sophisticated system. Appropriate for large groups (Compare with Desktop Videoconferencing).

Router

A device or set-up that finds the best route between any two networks, even if there are several networks to traverse. Like bridges, remote sites can be connected using routers over dedicated or switched lines to create WANs. (Compare with Bridge).

RS-232-C

A set of EIA standards specifying various electrical and mechanical characteristics for interfaces between computers, terminals, and modems. The standard applies to both synchronous and asynchronous binary data transmission at rates below 64 kbps.

RTP/RTCP (Real-Time Protocol/Real-Time Control Protocol)

IETF specification for audio and video signal management. Allows applications to synchronise audio and video information.