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Homepage>BS Standards>35 INFORMATION TECHNOLOGY. OFFICE MACHINES>35.100 Open systems interconnection (OSI)>35.100.30 Network layer>BS 7267:1990 Open systems interconnection: guide to operation of an X.25 interworking unit
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immediate downloadReleased: 1990-07-31
BS 7267:1990 Open systems interconnection: guide to operation of an X.25 interworking unit

BS 7267:1990

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

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Standard number:BS 7267:1990
Pages:12
Released:1990-07-31
ISBN:0 580 18290 8
Status:Standard
DESCRIPTION

BS 7267:1990


This standard BS 7267:1990 Open systems interconnection: guide to operation of an X.25 interworking unit is classified in these ICS categories:
  • 35.100.30 Network layer

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.”


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