After a period of time SDR will display a list of available session. Additional felxibility comes with the use of 'plugin' modules. Vic is a video conference tool designed to be flexible and extensible. Other video tools, such as NVat amd Rendez-Vous, may also be found at at Merit. An audio tool used for conferencing.
Vat is one of the basic tools of multicast audio.
It is used to encode audio information into IP packets and conversely, decode from IP to audio. While it is not of the highest quality it has very low entry requirements needing only an audio capable computer and a microphone. The format of the served streams are not propriatary so that any MPEG or H.261 receiver should be able to join an IPTV server source session. The RealVideo set of applications are more accurately refered to as the RealPlayer and RealServer tools. However, most any mention of RealAudio or RealVideo is interchangable with the current terminology.