What is multipoint control unit / multicast router for a typical video conference system?
1
It is the network for multipoint video conference.
2
It is a block responsible for synchronization of the different media (audio/video/data) being transmitted and for receiver feedback for quality of service (QoS) monitoring.
3
It is an entity for transporting video conferencing data between participants.
4
It is a special network server to coordinate the distribution of the video conferencing data among the multiple participants in a multipoint video conference.