ISO/IEC 11582:2002定义了在Q参考点控制补充业务和附加网络功能（ANF）的信令协议。该协议是1号专用信令系统（PSS1）的一部分，非正式名称为QSIG。Q参考点存在于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，并在ISO/IEC 11579-1中定义。适用于个别补充服务和ANF的详细程序不在ISO/IEC 11582:2002的范围内，并将由其他标准规定，用于标准化服务，以及由个别制造商使用ISO/IEC 11582:2002中定义的功能规定专有服务。 ISO/IEC 11572定义了Q参考点电路交换呼叫控制的第3层协议。 ISO/IEC 11582:2002定义了附加协议程序，与ISO/IEC 11572中定义的程序结合使用，以控制补充服务和ANF。 注1:附录C中提供了将这些通用功能程序应用于某些补充服务的典型示例，仅供解释和说明之用。 注2:特定补充服务和附加网络功能可能需要附加信息传输机制，这些机制是特定于服务或功能的，不在ISO/IEC 11582:2002的范围内。

ISO/IEC 11582:2002 defines the signalling protocol for the control of Supplementary Services and Additional Network Features (ANFs) at the Q reference point. The protocol is part of Private Signalling System no. 1 (PSS1), known informally as QSIG. The Q reference point exists between Private Integrated services Network eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN) and is defined in ISO/IEC 11579-1. Detailed procedures applicable to individual supplementary services and ANFs are beyond the scope of ISO/IEC 11582:2002 and will be specified by other standards for those services which are standardised and by individual manufacturers for proprietary services using the capabilities defined in ISO/IEC 11582:2002. ISO/IEC 11572 defines the Layer 3 protocol for circuit-switched call control at the Q reference point. ISO/IEC 11582:2002 defines additional protocol procedures, to be used in conjunction with those defined in ISO/IEC 11572 for the control of supplementary services and ANFs. NOTE 1 Typical examples of the application of these generic functional procedures to some supplementary services are provided in annex C, for explanatory and illustrative purposes only. NOTE 2 Specific supplementary services and Additional Network Features may require additional information transfer mechanisms which are service or feature specific and are beyond the scope of ISO/IEC 11582:2002.