ISO/IEC 13870:2003 信息技术-系统间的通信和信息交换-私人综合服务网络-信号协议交互换-呼叫整体附助服务

标准编号：ISO/IEC 13870:2003

中文名称：信息技术-系统间的通信和信息交换-私人综合服务网络-信号协议交互换-呼叫整体附助服务

英文名称：Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Call Completion supplementary services

发布日期：2003-04

标准范围

ISO/IEC 13870:2003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(PINX)之间的Q参考点处支持呼叫完成补充业务的信令协议。呼叫完成补充服务是完成对忙用户的呼叫(SS-CCB)和完成无应答的呼叫(SS-CCNR)。SS-CCBS使遇到忙的目的地用户B的主叫用户A能够在用户B不忙时完成呼叫，而不必进行新的呼叫尝试。SS-CCNR使遇到尽管被警告但没有应答的目的地用户B的主叫用户A能够在用户B在一段活动后再次变得不忙时完成呼叫，而不必进行新的呼叫尝试。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 13870:2003包含Q参考点的第3阶段规范，并满足ISO/IEC 13866中第1阶段和第2阶段规范确定的要求。用于SS-CCBS和SS-CCNR的信令协议在用于基本电路交换呼叫控制的信令协议之上操作，如在ISO/IEC 11572中所规定的，并且使用用于控制在ISO/IEC 11582中所规定的补充业务的通用程序的某些方面。ISO/IEC 13870:2003还规定了用于支持在Q参考点处SS-CC和其他补充业务和ANF之间的交互的附加信令协议要求。ISO/IEC 13870:2003适用于可以互连以形成PISN的PINX。

ISO/IEC 13870:2003 specifies the signalling protocol for the support of the Call Completion supplementary services at the Q reference point between Private Integrated services Network eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN). The Call Completion supplementary services are Completion of Calls to Busy Subscribers (SS-CCBS) and Completion of Calls on No Reply (SS-CCNR).

SS-CCBS enables a calling User A, encountering a busy destination User B, to have the call completed when User B becomes not busy, without having to make a new call attempt.

SS-CCNR enables a calling User A, encountering a destination User B that, though alerted, does not answer, to have the call completed when User B becomes not busy again after a period of activity, without having to make a new call attempt.

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 13870:2003 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 13866.

The signalling protocols for SS-CCBS and SS-CCNR operate 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 13870:2003 also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between SS-CC and other supplementary services and ANFs.

ISO/IEC 13870:2003 is applicable to PINXs which can interconnect to form a PISN.

标准预览图