RFC 1698 (rfc1698) - Page 1 of 29
Octet Sequences for Upper-Layer OSI to Support Basic Communications Applications
Alternative Format: Original Text Document
Network Working Group P. Furniss
Request for Comments: 1698 Consultant
Category: Informational October 1994
Octet Sequences for Upper-Layer OSI
to Support Basic Communications Applications
Status of this Memo
This memo provides information for the Internet community. This memo
does not specify an Internet standard of any kind. Distribution of
this memo is unlimited.
Abstract
This document states particular octet sequences that comprise the OSI
upper-layer protocols (Session, Presentation and ACSE) when used to
support applications with "basic communications requirements". These
include OSI application protocols such as X.400 P7 and Directory
Access Protocol, and "migrant" protocols, originally defined for use
over other transports.
As well as the octet sequences which are the supporting layer headers
(and trailers) around the application data, this document includes
some tutorial material on the OSI upper layers.
An implementation that sends the octet sequences given here, and
interprets the equivalent protocol received, will be able to
interwork with an implementation based on the base standard, when
both are being used to support an appropriate application protocol.
Table of Contents
1. Introduction ...................................................2
2. General ........................................................3
2.1 Subdivisions of "basic communication applications" ...........3
2.2 Conformance and interworking .................................5
2.3 Relationship to other documents ..............................5
3. Contexts and titles ............................................6
3.1 The concepts of abstract and transfer syntax .................6
3.2 Use of presentation context by cookbook applications..........7
3.3 Processing Presentation-context-definition-list ..............8
3.4 Application context ..........................................9
3.5 APtitles and AEqualifiers ....................................9
4. What has to be sent and received ..............................10
4.1 Sequence of OSI protocol data units used ....................10
4.2 Which OSI fields are used ...................................12
Furniss