Communication Controller

What Does Communication Controller Mean?

A communication controller is small computer used to manage the communication of input/output (I/O) data in a network, host machine or computer. A communication controller facilitates user tracking of all network activities and saves all data on a mainframe computer.


Devices – such as bridges, routers and multiplexers – convert parallel data into serial data for network transfer and handle other network tasks, including error control, data compression, proper routing and security parameters.

A communication controller is also known as a front-end processor or a communications processor.

Techopedia Explains Communication Controller

A communication controller is used for a variety of reasons, including the following:

  • Error detection and correction
  • Data routing via different network devices, such as routers and bridges
  • Buffering to store incoming and outgoing data
  • Providing network nodes/terminals for session connections
  • Manage data flow
  • Create communication links used to manage data transmission between different devices and channels

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Margaret Rouse

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.