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Glossary of Data Communications Terms
Courtesy Enterprise-Wide Computing, Inc.
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Term:
XON/XOFF
Definition:
In communications, a simple asynchronous protocol that
keeps the receiving device in synchronization with the
sending device. When the buffer in the receiving device if
full, it sends and xoff signal (transmit off) to the
sending device, telling it to stop transmitting. When the
receiving device is ready to accept more, it sends the
sending device an xon signal (transmit on) to start again.
A means of software flow control. See also, flow control.
Contrast with CTS/RTS.
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