ISO/IEC 13252:1999

Published (Edition 1, 1999)

This publication was last reviewed and confirmed in 2017. Therefore this version remains current.

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Abstract

This Recommendation | International Standard defines in an abstract way the externally visible service provided by the

Transport Layer in terms of:

a) the primitive actions and events of the service;

b) the parameter data associated with each primitive action and event;

c) the relationship between, and the valid sequences of, these actions and events.

The service defined in this Recommendation | International Standard is that which is provided by the Enhanced

Communications Transport Protocol (in conjunction with the Network Service) and which may be used by any

application protocol. The service can also be provided by other protocols possibly each supporting a subset of the

services defined herein.

The primitives specified in this Recommendation | International Standard support a connection-mode service and a

connectionless service. In some cases of connectionless-mode service supporting enhanced communications, certain

operations may also be necessary prior to the commencement of data transfer, e.g. agreement on quality of service.

For the data transfer phase of either connection-mode or connectionless-mode services, there may be a range of dataordering

characteristics.

No implication is made in this Recommendation | International Standard regarding the inclusion or exclusion of any of

the above characteristics given the service primitives specified herein.

This standard contributes to the following Sustainable Development Goal