Byte oriented

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A communication is byte oriented or character oriented when the transmitted information is grouped into bytes.

The latter term is deprecated, since the notion of character has changed. An ASCII character is indeed equivalent to byte in terms of the amount of information. With the internationalization of computer software, wide characters became necessary, to handle texts in different languages. In particular, Unicode characters can be 8, 16, or 32 bits long, i.e., 1, 2, or 4 bytes.

Byte oriented transmission makes use of byte-oriented protocols, that may involve transmission of additional bits as terminators, means of error recovery, etc.

The term byte oriented is often placed in an opposition to bit oriented, a distinction resembling that of binary and text files.

SYN SYN CL CT F R S A CRC1 M CRC2

SYN - Syncronisation

CL - Class

CTT – Character Count

F - Flag

R – Response No

S – Message No

A - Address