标准摘要
[中文适用范围]： 该国际标准规定了“QSIG”和“H.323”之间的信令互通，以支持企业电信网络（CN）内的基本服务。 “QSIG”是在专用综合业务网络(PISN)内的专用综合业务网络交换(PINX)之间的Q参考点处运行的信令协议。 Q 参考点在 ISO/IEC 11579-1 中定义。 PISN 为其用户提供电路交换基本服务和补充服务。 QSIG 在其他国际标准中指定，特别是 ISO/IEC 11572（支持基本服务的呼叫控制）。 “H.323”是一组用于支持分组网络内语音或多媒体通信的信令协议，特别是使用网际协议(IP)作为其网络层协议(IP网络)的分组网络。 H.323 信令协议在 IP 网络中的端点之间运行，可以通过一个或多个网守间接运行，也可以直接运行。 端点可以是另一个网络的终端或网关。 H.323 是一个“伞”建议，指的是各种 ITU-T 建议，特别是建议 H.225.0 和 H.245（基本通信能力）。 该国际标准规定了基本服务的信令互通，这些服务为采用 QSIG 的 PISN 和采用 H.323 的专用 IP 网络之间的语音、DTMF、传真和调制解调器媒体提供双向传输能力。 本国际标准规定了在 PISN 和 IP 网络之间建立用户信息（音频）连接的要求，但在 IP 网络中传输音频的协议以及用于在 IP 网络中建立和关闭音频传输的信令协议不属于范围本国际标准。 补充服务不属于本国际标准的范围。 QSIG 和 H.323 之间的互操作允许源自 PISN 用户的呼叫终止于专用 IP 网络的用户，或者源自专用 IP 网络用户的呼叫终止于 PISN 用户。 采用 QSIG 的 PISN 与采用 H.323 的公共 IP 网络之间的互通不属于本国际标准的范围。 然而，当与其他相关功能（例如，号码转换、安全功能等）结合部署时，本国际标准中规定的功能原则上适用于这种场景。 尽管两个这样的网关可以作为 IP 网络任一侧的对等点运行（由此 IP 网络提供两个 PISN 之间的互连），但对这种情况的特殊支持（例如，通过 IP 网络传输 QSIG 信息）超出了本讨论的范围。 国际标准。 尽管两个这样的网关可以作为 PISN 两侧的对等点运行（PISN 借此提供两个 IP 网络之间的互连），但对这种情况的特殊支持（例如，通过 PISN 传输 H.323 信息）超出了本讨论的范围。 国际标准。 本国际标准适用于任何可以充当采用 QSIG 的 PISN 和采用 H.323 的专用 IP 网络之间网关的互通单元。 [外文原描述]： ISO/IEC 23289:2002 specifies signalling interworking between "QSIG" and "H.323" in support of basic services within a corporate telecommunication network (CN). "QSIG" is a signalling protocol that operates at the Q reference point between Private Integrated services Network eXchange (PINX) within a Private Integrated Services Network (PISN). The Q reference point is defined in ISO/IEC 11579-1. A PISN provides circuit-switched basic services and supplementary services to its users. QSIG is specified in other International Standards, in particular ISO/IEC 11572 (call control in support of basic services). "H.323" is a set of signalling protocols for the support of voice or multimedia communication within a packet network, in particular a packet network that uses the Internet Protocol (IP) as its network layer protocol (IP network). H.323 signalling protocols operate between endpoints in an IP network, either indirectly via one or more gatekeepers, or directly. An endpoint can be a terminal or a gateway to another network. H.323 is an "umbrella" recommendation referring to various ITU-T recommendations, in particular recommendations H.225.0 and H.245 (basic communication capabilities). ISO/IEC 23289:2002 specifies signalling interworking for basic services that provide a bidirectional transfer capability for speech, DTMF, facsimile and modem media between a PISN employing QSIG and a private IP network employing H.323. This International Standard specifies requirements for establishing user information (audio) connections between the PISN and the IP network, but protocols for transmitting audio in the IP network and for signalling in order to establish and close down audio transmission in the IP network are outside the scope of this International Standard. Supplementary services are outside the scope of this International Standard. Interworking between QSIG and H.323 permits a call originating at a user of a PISN to terminate at a user of a private IP network, or a call originating at a user of a private IP network to terminate at a user of a PISN. Interworking between a PISN employing QSIG and a public IP network employing H.323 is outside the scope of this International Standard. However, the functionality specified in this International Standard is in principle applicable to such a scenario when deployed in conjunction with other relevant functionality (e.g., number translation, security functions, etc.). ISO/IEC 23289:2002 is applicable to any interworking unit that can act as a gateway between a PISN employing QSIG and a private IP network employing H.323.
英文名称Information technology - Telecommunications and information exchange between systems - Corporate telecommunication networks - Signalling interworking between QSIG and H.323 - Basic services