Back-channel
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- For a back channel of a river, see back channel.
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[edit] In telecommunications
A back-channel (also reverse channel or return channel) is typically a low-speed, or less-than-optimal, transmission channel in the opposite direction to the main channel.
See: Return channel
[edit] In diplomacy
A back channel in the language of diplomacy is an unofficial channel of communication between states or other political entities, used to supplement official channels, often for the purposes of discussing highly sensitive policy issues. See also Track II diplomacy.
[edit] In linguistics
In linguistics, back-channeling is the practice of giving positive comments, such as "uh-huh" or "yes" to the other speaker, to encourage further talk or to confirm that one is listening. In Chinese and particularly Japanese, back-channeling is very common, to the extent that non-native speakers may perceive it to be excessive or distracting. In American Sign Language, back-channeling is a major part of communication.
