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  • BSI
    BS 4505-3:1981, ISO 1155-1978 Digital data transmission - Method for use of longitudinal parity to detect errors in information messages
    Edition: 1981
    $266.02
    / user per year

Description of BS 4505-3:1981 1981

This International Standard specifies a method for detecting errors in information messages by attaching one block check character to the transmitted information block (or text) and checking this character when it is received. The method of correcting errors when they are detected is subject to the particular application and is performed at a higher level.

The method is applicable to systems which use the 7-bit coded character set which is the subject of ISO 646, 7-bit coded character set for information processing interchange, and the basic mode of implementing this 7-bit code in data communication systems, which is the subject of ISO 1745, Information processing — Basic mode control procedures for data communication systems.

The rules for generating the character parity bits, according to ISO 1177, Information processing — Character structure for start/stop and synchronous transmission, are that the character parity sense shall be odd in synchronous systems and even in asynchronous systems.



Specifies a method which attaches one block check character to the transmitted information block (or text) and checks this character when it is received.

Standard NumberBS 4505-3:1981, ISO 1155-1978
TitleDigital data transmission - Method for use of longitudinal parity to detect errors in information messages
StatusConfirmed
Publication Date1981-11-30
Identical National Standard OfISO 1155:1978
DescriptorsData link layer (OSI), Data transmission, Messages, Open systems interconnection, Error detection, Digital signals, Data processing, Data transmission control procedures, Block checks, Data transfer
ICS35.040.10 Coding of character sets, 35.200 Interface and interconnection equipment
CommitteeIST/6
ISBN0 580 12372 3
PublisherBSI
Pages8

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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