ISO/IEC INTERNATIONAL STANDARD 8072 Third edition 1996-08-01 Information technology Open systems interconnection - Transport service definition Technologies de I'information --- Interconnexion de systemes ouverts (OSl)-Définitionduservicedetransport E( Reference number ISO/IEC 8072:1996(E) Copyright Intemational Organization for Standardization dbyIHS Not for Resale ISO/IEC 8072:1996(E) CONTENTS Page SECTION 1 - GENERAL 1 1 Scope. 1 2 Normative references 1 2.1 Identical Recommendations I International Standards 1 3 Definitions 2 3.1 Reference Model definitions . 2 3.2 Service(Definition)conventions 2 3.3 Transport Service Definitions . 2 4 Abbreviations 3 5 3 5.1 General conventions.. 3 5.2 Parameters .. 3 6 Overview and general characteristics... 3 7 Classes and types of Transport Service.. 4 SECTION 2 - DEFINITION OF THE CONNECTION-MODE SERVICE 4 8 Features of the connection-mode Transport Service. 4 9 Model of the connection-mode Transport Service .... 5 9.1 5 9.2 Model of a Transport Connection .. 5 10 Quality of connection-.mode Transport Service ... 7 10.1 TC establishment delay ... 8 10.2 TC establishment failure probability... 8 10.3 Throughput. 8 10.4 Transit delay... 9 10.5 Residual error rate. 9 10.6 Transfer failure probability 9 10.7 TC release delay.. 10 10.8 TC release failure probability 10 10.9 TC protection.. 10 10.10 TC priority ... 10 10.11 Resilience of the TC. 10 11 Sequence of Transport Service primitives... 11 11.1 RelationofTSprimitivesatthetwoTCendpoints. 11 11.2 Sequence of TS primitives at one TC endpoint ... 11 ?ISO/IEC1996 All rights reserved. Unless otherwise specified, no part of this publication may be rcproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and micro- film, without permission in writing from the publisher. ISO/IEC Copyright Office · Case postale 56 · CH-1211 Geneve 20 · Switzerland Printed in Switzerland Copyright Intemational Organization for Standardization ed without licel nse from IHS Not for Resale ISO/IEC 8072:1996(E) @ ISO/IEC 12 Transport Connection establishment phase.. 14 12.1 Function .. 14 12.2 Types of TS primitives and parameters ... 14 12.2.1 Addresses ... 14 12.2.2 Called Address .... 14 12.2.3 15 12.2.4 Responding Address . 15 12.2.5 Expedited Data option... 15 12.2.6 Quality of Service..... 15 12.2.7 TS user-data .. 16 12.3 16 12.4 Negotiation of expedited data transfer service...... 16 13 17 13.1 DataTransfer Service. 17 13.1.1 17 13.1.2 Types of TS primitives and parameters ... 17 13.1.2.1 TS user-data... 17 13.1.3 Sequence of TS primitives............. 17 13.2 Expedited data transfer service .... 17 13.2.1 Function.. 17 13.2.2 Types of TS primitives and parameters 18 13.2.2.1 TS user.data.... 18 13.2.3 Sequence of TS primitives .... 18 14 Transport Connection release phase. 18 14.1 Function ... 18 14.2 Types of TS primitives and parameters .. 19 14.2.1 Reason.... 19 14.2.2 TS user-data........... 19 14.3 Sequence of TS primitives when releasing an established transport connection . 19 14.4 Sequence of TS primitives in TS user rejection of a TC establishment... 21 14.5 Sequence of TS primitives in a TS provider rejection of a TC Establishment attempt.... 21 SECTION 3 - DEFINITION OF THE CONNECTIONLESS-MODE SERVICE. 21 15 Features of the connectionless-mode Transport Service. 21 16 Model of the connectionless-mode Transport Service. 22 16.1 General.... 22 16.2Model of transport connectionless-mode transmission.... 22 17 Quality of connectionless-mode Transport Service .... 23 Determination of QOS ... 23 17.1 17.2 Definition of connectionless-mode QOS parameters. 23 17.2.1 Transit delay..... 23 17.2.2 Protection..... 24 17.2.3 Residual error probability .. 24 17.2.4 24 18 Sequence of connectionless-mode primitives at one TSAP .. 24 19 25 25 19.1 19.2 Types of primitivesandparameters 25 19.2.1 25 19.2.2 25 19.2.3 TS user data... 26 19.3 Sequence of primitives. 26 ili Copyright Intemational Organization for Stand