标准摘要
[中文适用范围]： 指定网络层互通单元 (IWU) 使用 X.25 数据包层协议支持 OSI 连接模式网络服务的方法。 该规范以 ISO/IEC 10028 中定义的网络内部层服务与 X.25 分组层协议的虚拟呼叫和永久虚拟电路服务之间的映射来表示。 提供符合相关要求并符合 ISO/IEC 9646-2 中给出的相关指南的 PICS（协议实施一致性声明）形式。 [外文原描述]： Specifies the method by which a network-layer interworking unit (IWU) uses the X.25 packet layer protocol to support the OSI connection-mode network service. The specification is expressed in terms of a mapping between the network internal layer service defined in ISO/IEC 10028 and the virtual call and permanent virtual circuit services of the X.25 packet layer protocol. Provides the PICS (Protocol Implementation Conformance Statement) proforma in compliance with the relevant requirements, and in accordance with the relevant guidance, given in ISO/IEC 9646-2.
英文名称Information technology - Telecommunications and information exchange between systems - Provision of the connection-mode Network internal layer service by intermediate systems using ISO/IEC 8208, the X.25 Packet Layer Protocol