Definitions for "Back channel"
See "return path"
A back channel is a term that applies to asymmetric data connections. It is the slower of the two data paths, or directions, in the connection. Often times, as with ADSL and 56Kbps modems, the back channel is transmitted over the same set of wires or other media as the larger of the two data paths. In other cases, such as with satellite downlinks and some cable modem systems that use a modem and the telephone system to carry the back channel, the data is returned via a different transmission media.
an alternative to the regular channels of communication that is used when agreements must be made secretly (especially in diplomacy or government); "they negotiated via a back channel"
Keywords:  pathway, send, player, goes, fast
Communications link used by the client to send video stream control commands (such as fast forward or play) to the server.
A data pathway through which a Player can send information back to the network manager.
a communication pathway that goes from a player, back to the control station.