VME System Supervisor: The Vertically Modulated E-bus system supervisor is the brain of the Chief Leschi video distribution system. It is directly connected to most every piece of the system, and indirectly connected to everything else. At the classroom end, the system universal infra red remote control sends commands through the I.R. receiver to the classroom control panel which delivers these commands over a dedicated twisted pair, separate from the pair delivering the video/audio composite back to Headend where the supervisor is located. Any classroom equipped with a PC that is connected to the Chief Leschi LAN can communicate with the media management PC located in the Headend for content scheduling and source equipment assignment. The software also allows for emulation of the commands available on the hand held infra red remote control, so content can be commanded from the PC desktop if more convenient than using the remote itself. This is possible because the media management PC is connected to both the LAN and to the system supervisor. At the headend, the supervisor is connected to every source, either directly or through a source interface, enabling the commands from the classroom end to instantaneously control the source function, e.g. play, pause, stop, rewind or fast forward. The supervisor also connects to the baseband routing switcher, sending signal destination and source routing information to the switch's on board computer which implements crosspoint control.