信息技术 开放系统互连 应用服务客体联系控制服务元素无连接协议

[中文适用范围]： 此建议|国际标准规定： a) 应用服务对象（ASO）之间的信息传输程序； b) A-UNIT-DATA ACSE APDU 表示的抽象和具体语法。 A-UNIT-DATA 过程是根据以下方面定义的： a) 通过使用支持服务在对等 ACSE 协议机器之间进行交互； b) ACSE 协议机、其服务提供者和服务用户之间的交互。 这些过程适用于希望在开放系统互连环境中以无连接模式进行通信的系统之间的通信实例。 此建议|国际标准还规定了实施此程序的系统的一致性要求。 它不包含可用于证明一致性的测试。 [外文原描述]： This Recommendation | International Standard specifies: a) procedures for the transfer of information among application-service-objects (ASOs); and b) the abstract and concrete syntax for the representation of the A-UNIT-DATA ACSE APDU. The A-UNIT-DATA procedure is defined in terms of: a) The interactions between peer ACSE protocol machines by the use of a supporting service; and b) the interaction between an ACSE protocol machine, its service-provider and its service-user. These procedures are applicable to instances of communication between systems which wish to communicate in an open systems interconnection environment in a connectionless mode. This Recommendation | International Standard also specifies conformance requirements for systems implementing this procedure. It does not contain tests which can be used to demonstrate conformance.