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ISO Transport Protocol specification (RFC0892) Disclosure Number: IPCOM000003941D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2000-Sep-13

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

International Organization for Standardization: AUTHOR


1. Scope and Field of Application 2. References

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 2% of the total text.

Network Working Group ISO

Request for Comments: 892 December 1983

ISO Transport Protocol Specification

This document is distributed as an RFC for information only.

It does not specify a standard for the ARPA Internet.

Note: This document appeared in:

ISO/TC97/SC16/WG6. Information Processing Systems - Open Systems

Interconnection - Transport Protocol Specification. Computer

Communication Review 12, 3-4 (July/October 1982), pp. 24-67.

and differs from it only in format.

Table of Contents

0. Introduction

1. Scope and Field of Application

2. References

Section One - General

3. Definitions

4. Symbols and Abbreviations

5. Overview

5.1 Service provided by the transport layer

5.2 Service assumed from the network layer

5.3 Functions of the transport layer

5.4 Model of the transport layer

Section Two - Transport Protocol Specification

6. Protocol Mechanisms

6.1 Assignment to network connection

6.2 Transport protocol data unit (TPDU) transfer

6.3 Data TPDU length and segmenting

6.4 Concatenation and separation

6.5 Connection establishment

6.6 Connection refusal

6.7 Release

6.8 Implicit termination

6.9 Spurious disconnect

6.10 Data TPDU numbering

6.11 Expedited data transfer

6.12 Reassignment

6.13 Reassignment after failure

ISO Transport Protocol Specification Page 2

International Standards Organization

6.14 Retention until acknowledgement of TPDUs

6.15 Resynchronization

6.16 Multiplexing and demultiplexing

6.17 Explicit flow control

6.18 Checksum

6.19 Frozen references

6.20 Retransmission on timeout

6.21 Resequencing

6.22 Inactivity control

6.23 Treatment of protocol errors

6.24 Splitting and recombining

7. Protocol Classes

7.0 Protocol description of class 0: simple class

7.1 Protocol description of class 1: basic error recovery class

7.2 Protocol description of class 2: multiplexing class

7.3 Protocol description of class 3: error recovery and multiplexing


7.4 Protocol description of class 4: error detection and recovery class

8. Encoding

8.1 Summary

8.2 Structure

8.3 Connection Request (CR)

8.4 Connection Confirm (CC)

8.5 Disconnect Request (DR)

8.6 Disconnect Confirm (DC)

8.7 Data (DT

8.8 Expedited Data (ED)

8.9 Data Acknowledgement (AK)

8.10 Expedited Data Acknowledgement (EA)

8.11 Reject (RJ)

8.12 TPDU Error (ERR)

Section Three - Conformance

9. Conformance

0. Introduction

The Transport Protocol Standard is one of a set of International

Standards produced to facilitate the interconection of computer

systems. The set of standards covers the services and protocols

required to achieve such interconnection.

The Transport Protocol Standard is positioned with re...