Difference between BISYNC and HDLC features
BISYNC:
BISYNC stands for Binary Synchronous Communication. It is a half-duplex link protocol that replaces the SRT which stands for Synchronous transmit-receive.
HDLC:
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. |
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