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BS 7267:1990

BS 7267:1990

Current

Current

The latest, up-to-date edition.

Open systems interconnection: guide to operation of an X.25 interworking unit

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

07-31-1990

Publisher

British Standards Institution

Committees responsible
National foreword
Guide
1. Scope
2. Normative references
3. Abbreviations
4. General considerations
5. Procedures for restart
6. Procedures for virtual call setup and clearing
7. Procedures for data and interrupt transfer
8. Procedures for flow control
9. Procedures for reset
10 . Optional user facilities
Table
1. Categorization of optional user facilities
Figure
1. Operation of an X.25 to X.25 IWU

Defines the operation of an interworking unit for use on networks that comply with CCITT Recommendation X.25.

This Technical Report describes the function of the IWU in terms of the mapping between Protocol Data Units (PDUs) that it receives from one interface, and PDUs that it then transmits, which could be on either interface of the IWU. Additionally, this Technical Report describes the procedures that an IWU can initiate on each interface independently.

Each interface corresponds to one instance of a DTE/DXE connection, and both interfaces of the Interworking Unit operate as a DTE as specified by ISO 8208.

NOTE The term “DXE?? is used as defined in ISO 8208 meaning “...those contexts where it would not matter whether a DTE or a DCE was being referred to.??

Committee
IST/6
DevelopmentNote
Also numbered as ISO/IEC TR 10029 Supersedes 89/62161 DC (09/2005)
DocumentType
Standard
Pages
12
PublisherName
British Standards Institution
Status
Current

BS EN 60870-6-601:1995 Telecontrol equipment and systems. Telecontrol protocols compatible with ISO standards and ITU-T recommendations Functional profile for providing the connection-oriented transport service in end system connected via permanent access to a packet switched data network

BS 7219:1989 Specification for X.25 packet level protocol for data terminal equipment for information processing systems
ISO/IEC 8880-2:1992 Information technology — Telecommunications and information exchange between systems — Protocol combinations to provide and support the OSI Network Service — Part 2: Provision and support of the connection-mode Network Service

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Hardcopy - English
PDF - English
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