In a data transmission circuit a backward channel is the channel that passes data in a direction opposite to that of its associated forward channel. The backward channel is usually used for transmission of request, supervisory, acknowledgement, or error-control signals. The direction of flow of these signals is opposite to that in which user information is being transferred. The backward-channel bandwidth is usually less than that of the primary channel, that is, the forward (user information) channel. For example, ADSL's upstream channel, considered a backward channel for some types of analysis, typically has a bandwidth less than one-fourth of the downstream channel.
In data transmission, it is a secondary channel in which the direction of transmission is constrained to be opposite to that of the primary, i.e., the forward (user-information) channel. The direction of transmission in the backward channel is restricted by the control interchange circuit that controls the direction of transmission in the primary channel.
backward, channel, this, article, includes, list, references, related, reading, external, links, sources, remain, unclear, because, lacks, inline, citations, please, help, improve, this, article, introducing, more, precise, citations, march, 2013, learn, when,. This article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations Please help to improve this article by introducing more precise citations March 2013 Learn how and when to remove this template message In a data transmission circuit a backward channel is the channel that passes data in a direction opposite to that of its associated forward channel The backward channel is usually used for transmission of request supervisory acknowledgement or error control signals The direction of flow of these signals is opposite to that in which user information is being transferred The backward channel bandwidth is usually less than that of the primary channel that is the forward user information channel For example ADSL s upstream channel considered a backward channel for some types of analysis typically has a bandwidth less than one fourth of the downstream channel In data transmission it is a secondary channel in which the direction of transmission is constrained to be opposite to that of the primary i e the forward user information channel The direction of transmission in the backward channel is restricted by the control interchange circuit that controls the direction of transmission in the primary channel See also editReturn channelReferences editFederal Standard 1037C MIL STD 188 nbsp This article related to telecommunications is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Backward channel amp oldid 833153118, wikipedia, wiki, book, books, library,
