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