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Тезис Предпросмотр

This Recommendation | International Standard defines ACSE services for ASO-association control in an open systems

interconnection environment. ACSE supports two modes of communication service: connection-mode and

connectionless-mode.

The ACSE connection-mode service is provided by the use of the connection-mode ACSE protocol (see ITU-T

Rec. X.227 bis | ISO/IEC 15954).

The ACSE connectionless-mode service (A-UNIT-DATA) is provided by the use of the connectionless-mode ACSE

protocol (see ITU-T Rec. X.237 bis | ISO/IEC 15955).

Five functional units are defined in the ACSE. The mandatory Kernel functional unit is used to establish and release

ASO-associations. The optional Authentication functional unit provides additional facilities for exchanging information

in support of authentication during association establishment without adding services. The ACSE authentication

facilities may be used to support a limited class of authentication methods. The optional ASO-context negotiation

functional unit allows multiple ASO-contexts to be offered during association establishment. The optional higher level

association functional unit provides for the facility to identify ASO-associations and transparently pass data to child

ASOs and allows the ASO-context or the presentation context on an ASO-association to be modified during the lifetime

of the association.

This Recommendation | International Standard does not specify individual implementations or products, nor does it

constrain the implementation of entities and interfaces within a computer system.

No requirement is made for conformance to this Service definition.


Общая информация

  • Текущий статус :  Published
    Дата публикации : 1999-12
  • Версия : 1
  • :
    ISO/IEC JTC 1
    Information technology
  • 35.100.70
    Application layer

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