automatic baud rate detection (ABRD)

Automatic Baud Rate Detection (ABRD) is a procedure in which receiving data stations such as modems automatically adjust to the transmitted transmission rates.

In the ABRD procedure, the receiving station scans the first transmitted characters, usually a preselected registration character. The ABRD method allows dataterminal equipment to receive data from different data transmission equipment at different data rates and to automatically adjust its reception parameters to the transmission speed when the first bits are transmitted.