automatic baud rate detection
ABR
autobaud
<communications> (ABR, autobaud) A process by which a
receiving device determines the speed, {code level}, and {stop
bits} of incoming data by examining the first character,
usually a preselected sign-on character. ABR allows the
receiving device to accept data from a variety of transmitting
devices operating at different speeds without needing to
establish data rates in advance.
(1996-06-18)