Digital data transmission Specification for basic mode control procedures

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-11-1981

Publisher

British Standards Institution

National foreword
Cooperating organizations
Specification
0. Introduction
1. Scope and field of application
2. Definitions of the transmission control characters
3. Message formats
4. Description of phases
5. Description of use of the transmission control
characters
Annexes
A. Definitions
B. Extensions of transmission control functions using
DLE sequences
C. Alternative positive acknowledgement option
Table of phases
Figures
1. Phase linkage diagram
2. Phase 2 - Establishment of data link
3. Phase 3 - Information transfer
4. Phase 4 - Termination

Specifies the implementation of the ISO/CCITT 7-bit coded character set for information interchange on data transmission channels and defines formats of the transmitted messages and supervisory sequences which are part of the transmission control procedures.

1.1 General

This International Standard specifies the method of implementation of the ISO/CCITT 7-bit coded character set¹⁾ for information interchange on data transmission channels. It also defines the formats of the transmitted messages and the supervisory sequences which are part of the transmission control procedures. It covers the majority of existing data transmission systems and data link configurations used in conjunction with data processing systems.

These control procedures deal with transmission over one link at a time and do not describe the operation of data links in “tandem??. They relate to the class of control procedures which is known as the basic mode and apply at the interface between data communication equipment and data terminal equipment.

Committee	IST/6
DevelopmentNote	Also numbered as ISO 1745 Supersedes 81/60118 DC (08/2005)
DocumentType	Standard
Pages	26
PublisherName	British Standards Institution
Status	Current

BS 4505-7:1976	Digital data transmission Basic mode control procedures; conversational information message transer
BS 3527:1962	Glossary of terms used in automatic processing
BS 4505-2:1969	Specification for digital data transmission. Character structure for start/stop and synchronous transmission
BS 4730:1974	Specification for the United Kingdom 7-bit data code (ISO-7-UK)
BS 4505-4:1971	Digital data transmission Basic mode control procedures. Code independent information transfer
BS 4505-6:1976	Digital data transmission Complements to the basic mode control procedures; recovery, abort and interrupt, multiple station selection

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BS 4505-1:1981

Digital data transmission Specification for basic mode control procedures

Table of Contents

Abstract

Scope

1.1 General

General Product Information

Standards Referencing This Book

Category

Subcategory