BISYNC stands for Binary Synchronous Communication. It is a half-duplex link protocol that replaces the SRT which stands for Synchronous transmit-receive.
HDLC stands for High-Level Data Link Control. It works on the data link layer of the OSI reference model. It supports both connection-oriented and connection less services.
Features of HDLC and BISYNC :
|BISYNC Features||HDLC Features|
|It supports serial transmission.||It also supports serial transmission.|
|Communication mode of BISYNC is synchronous.||Communication mode of HDLC is both synchronous and asynchronous.|
|It uses TWA directional mode.||It uses TWA and TWS directional mode.|
|It supports both point to point and point to multipoint configuration.||It also supports both point to point and point to multipoint configuration.|
|It follows stop and wait flow control protocol.||It follows sliding window flow control protocol.|
|To content errors it uses LRC/CRC method.||To content errors it uses CRC method.|
|It uses SYN SYN frame identifier in framing.||It uses Flag frame identifier in framing.|
|EBT/ETX frame delimiter in framing.||Flag frame delimiter in framing.|
|Multiple bytes information field in framing.||Multiple bits information field in framing.|
|For Framing transparency it follows DLE stuffing.||For Framing transparency it follows ZERO stuffing.|