ISO/IEC 14843:2003 信息技术,电信和系统间的信息交换,专业综合服务网络,互换信号发送协议,呼叫提出追加服务

标准编号：ISO/IEC 14843:2003

中文名称：信息技术,电信和系统间的信息交换,专业综合服务网络,互换信号发送协议,呼叫提出追加服务

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

发布日期：2003-04

标准范围

ISO/IEC 14843:2003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参考点处支持呼叫提供补充业务(SS-CO)的信令协议。SS-CO是一种补充业务，它根据主叫用户(或代表该用户)的请求，使呼叫能够提供给忙的被叫用户，并等待该被叫用户接受该呼叫。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 14843:2003包含Q参考点的第3阶段规范，并满足ISO/IEC 14841中第1阶段和第2阶段规范确定的要求。用于SS-CO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运行，如ISO/IEC 11572中所规定，并使用用于控制ISO/IEC 11582中所规定的补充业务的通用程序的某些方面。ISO/IEC 14843:2003还规定了用于支持SS-CO和其他补充业务与ANF之间在Q参考点处的交互的附加信令协议要求。注:在相关的第1阶段规范中可以找到对Q参考点处的信令协议没有影响的附加交互。ISO/IEC 14843:2003适用于可以互连形成PISN的PINX。

ISO/IEC 14843:2003 specifies the signalling protocol for the support of the Call Offer supplementary service (SS-CO) at the Q reference point between Private Integrated services Network eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN).

SS-CO is a supplementary service which, on request from the calling user (or on that user's behalf), enables a call to be offered to a busy called user and to wait for that called user to accept this call.

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 14843:2003 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 14841.

The signalling protocol for SS-CO 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 14843:2003 also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between SS-CO and other supplementary services and ANFs.

NOTE Additional interactions that have no impact on the signalling protocol at the Q reference point can be found in the relevant stage 1 specifications.

ISO/IEC 14843:2003 is applicable to PINXs which can interconnect to form a PISN.

标准预览图