mcu means multipoint control unit.
In order to realize the multipoint conference TV system, MCU must be set up.MCU is essentially a multimedia information switch, which carries out multipoint call and connection, realizes the functions of video broadcasting, video selection, audio mixing, data broadcasting and so on, and completes the sinking and switching of signals of various terminals.What is the difference between MCU and the current switch is that the switch completes the signal The difference between MCU and the current switch is that the switch accomplishes the point-to-point connection of signals, while MCU has to accomplish the switching, convergence or broadcasting of multi-points to multi-points.
Role
The role of the MCU is to switch the input multi-channel conference TV signals, but because the conference TV signals contain images, voice and data of three different types of signals, so the MCU switching role is not like a telephone exchange is simply voice signals to transfer, it is necessary to three types of signals to carry out different processing. different processing of the three types of signals.
The MCU adopts the way of multi-way mixing (of course, can also be used to switch the way) to transmit voice signals, video signals to take the way of direct distribution of transmission, for data signals to take the way of broadcasting or MLP mode transmission. In addition, the MCU has to complete the communication control signals, network interface signal processing.