ISO/IEC 21408:2003 信息技术-系统间的通信和信息交换-专业集成服务网络-互换信号协议-简单辅助对话服务
标准编号：ISO/IEC 21408:2003
中文名称：信息技术-系统间的通信和信息交换-专业集成服务网络-互换信号协议-简单辅助对话服务
英文名称：Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Simple dialog supplementary service
发布日期：2003-04
标准范围
ISO/IEC 21408:2003规定了在专用综合业务网络(PISN)内连接在一起的专用综合业务网络交换机(PINXs)之间的Q参考点处支持简单对话补充业务(SS-SD)的信令协议。补充业务SD使用户能够通过交换键盘和在PISN上透明地显示信息来与另一用户或应用通信。Q参考点在ISO/IEC 11579-1中定义。根据ETS 300 387中规定的方法，分三个阶段制定服务规范。ISO/IEC 21408:2003包含Q参考点的阶段3规范，并满足ISO/IEC 21407中的阶段1和阶段2规范所确定的要求。SS-的信令协议SD在用于基本电路交换呼叫控制的信令协议之上操作，如ISO/IEC 11572中所规定的，并且使用用于控制ISO/IEC 11582中所规定的补充业务的通用程序的某些方面。ISO/IEC 21408:2003还规定了用于支持SS-SD与其他补充业务和ANF之间Q参考点处的交互的附加信令协议要求。ISO/IEC 21408:2003适用于可以互连以形成PISN的PINX。
ISO/IEC 21408:2003 specifies the signalling protocol for the support of the Simple Dialog supplementary service (SS-SD) at the Q reference point between Private Integrated services Network eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN).
Supplementary service SD enables a user to communicate with another user or application by the exchange of keypad and display information transparently over a PISN.
The Q reference point is defined in ISO/IEC 11579-1.
Service specifications are produced in three stages and according to the method specified in ETS 300 387. ISO/IEC 21408:2003 contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specifications in ISO/IEC 21407.
The signalling protocol for SS-SD operates on top of the signalling protocol for basic circuit switched call control, as specified in ISO/IEC 11572, and uses certain aspects of the generic procedures for the control of supplementary services specified in ISO/IEC 11582.
ISO/IEC 21408:2003 also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between SS-SD and other supplementary services and ANFs.
ISO/IEC 21408:2003 is applicable to PINXs which can interconnect to form a PISN.
标准预览图
