信息技术 通用数字音频-可视系统 第2部分:系统动态、方案和协议要求

[中文适用范围]： ISO/IEC 16500 这一部分的目的是为 ISO/IEC 16500 系统指定规范协议和相关的动态系统行为，包括会话和连接操作、配置和下载。 重点是重要的动态系统实体（例如，会话控制、呼叫/连接控制）、这些实体的行为（例如，信息流、实体动作、传递的参数）以及这些实体在系统中允许的物理放置。 DAVIC 系统（即物理实例）。 因此，ISO/IEC 16500 的这一部分补充了 ISO/IEC 16500-1 中描述的静态系统参考模型，指定了规范的动态行为并指定了实现此行为所需的协议。 协议本身主要通过使用“协议网络架构”图来指定，该图直观地说明了对于每个定义的物理实例和应用场景，要使用的各种协议栈。 ISO/IEC 16500-5（中层和高层）和 ISO/IEC 16500-4（底层）提供了各个协议工具本身的详细规范（例如，用于实现 DAVIC 动态流行为的详细协议消息）。 ）本规范。 这导致实例规范由来自 DAVIC 工具集的构建块组成，这些构建块以描述执行 DAVIC 功能的系统的方式组织。 [外文原描述]： The purpose of this part of ISO/IEC 16500 is to specify normative protocols and associated dynamic system behavior, including session and connection manipulation, configuration and download, for an ISO/IEC 16500 system. The emphasis is on the significant dynamic system entities (e.g., session control, call/connection control), the behavior of these entities (e.g., information flows, entity actions, parameters passed) and the allowable physical placement(s) of these entities in a DAVIC system (i.e., physical instances). As such, this part of ISO/IEC 16500 complements the static systems reference model described in ISO/IEC 16500-1, specifying normative dynamic behavior as well as specifying the protocol(s) required to realize this behavior. The protocols themselves are specified primarily through the use of "Protocol Network Architecture" diagrams which visually illustrate, for each of the defined physical instances and application scenarios, the various protocol stacks which are to be used. Detailed specification of the individual protocol tools themselves (e.g., the detailed protocol messages used to realize the DAVIC dynamic flow behavior) is provided in ISO/IEC 16500-5 (mid- and higher layers) and ISO/IEC 16500-4 (lower layers) of this specification. This results in instance specifications made up of building blocks from the DAVIC tool set organized in a manner describing a system which performs DAVIC functions.