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Back Channel
— (Backchannel,
Return Channel, Return Link, Reverse Channel, Back Channel
Network
Connection, Return Path)
– The physical way that the end-user (viewer) is able to
send
information, requests and/or demands back to the network
operator. This can be
an integral part of interactive
television. A return path (back
channel)
is a 2-way
communications
link between the TV viewer (end-user) and the interactive content
provider. (This is opposed to the front
channel, which is the 1-way
communication from the network
operator,
such a television
network, to the TV viewer; something we all experience simply
by watching linear
TV.) The return path
may be of lower
bandwidth
than the front channel. The return path can be offered in a
growing number of ways including a standard modem and attached
telephone line, a cable modem, satellite
connection etc.
Network
Definition
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