{{Short description|Device that performs multiplexing or demultiplexing of communications channels}} {{For|the sides of a channel|bank (geography)}} {{refimprove|date=March 2026}} [[File:Newbridge communications channel bank.jpg|thumbnail|right| A T1 feed demultiplexed through a Newbridge channel bank to 24 channels with an Amphenol connector]]
In telecommunications, a '''channel bank''' is a device that performs multiplexing or demultiplexing of a group of communications channels, such as analog or digital telephone lines, into one channel of higher bandwidth or higher digital bit rate, such as a DS-1 (T1) circuit, so that all the channels can be sent simultaneously over a single cable called a trunk line.<ref>{{Cite web |title=Channel Banks – A Technical Look {{!}} Connections Magazine |url=https://connectionsmagazine.com/article/technical-look-at-channel-banks/ |access-date=2026-03-27 |website=connectionsmagazine.com}}</ref>
A channel bank may be located in a telephone exchange, or in an enterprise's telephone closet or enclosure where it ''breaks out'' individual telephone lines from a high-capacity telephone trunk line connected to the central telephone office, or the enterprise's PBX system.
== See also == * Multiplexer * Multiplexing * Digital Signal 1 * Carrier system
== References == {{Reflist}}
Category:Telecommunications systems Category:Communication circuits Category:Multiplexing
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