信息技术 系统间远程通信和信息交换 专用综合业务网 专用综合业务联网的体系结构和概况

[中文适用范围]： 专用综合服务网络 (PISN) 是一种由一个 PINX 或通过 PINX 间连接互连的多个 PINX 组成的网络。 本技术报告涉及由介入网络 (IVN) 提供的 PINX 间连接 (IPC)，以及 PINX 处理这些连接以提供 PINX 间通信平台的方式。 根据 ISO/IEC 11579-1 中指示的场景，可以使用不同类型的 IVN 来提供 IPC。 这些是覆盖方案，因为它们使 PISN 的服务能够在 IVN 上透明地运行。 连接的 PINX 需要协调 IVN 的使用，并且需要适当的标准化以允许使用来自多个供应商的 PINX 和 IVN 创建网络。 需要考虑以下几点： ——一般而言，但根据 IVN 的类型，需要 PINX 之间的程序和信令协议来建立、维护和释放 IPC。 这些程序和信令协议的适当标准化是必要的。 — 在 Q 参考点（PINX 内的概念点）处，信道和 PISN 呼叫控制信令 (QSIG) 的定义与 IVN 的类型无关。 然而，在 C 参考点（PINX 连接到 IVN 的位置），通道和信令的表示取决于 IVN 的类型以及 PINX 如何使用 IPC。 有必要在 C 参考点对这些方面进行适当的标准化。 — 一般而言，Q 参考点处的信道与其在 C 参考点处的表示之间的关系不是静态的，并且需要 PINX 之间的程序和信令来协调这些关系。 这些程序和信令的适当标准化是必要的。 — 需要对适当的机制进行标准化，以通过 IVN 传送 PINX 间信令。 这些将取决于所使用的 IPC 的特性。 本技术报告的目的是确定： 1. 除了 PISN 呼叫控制信令 (QSIG) 之外，还需要标准化哪些内容，以便能够互连 PINX； 2. 适用于所有（或至少很多）类型 IVN 的通用技术、程序、协议等。 [外文原描述]： A Private Integrated Service Network (PISN) is a network comprising either one PINX or more than one PINX interconnected by Inter-PINX connections. This Technical Report is concerned with inter- PINX connections (IPC) that are provided by Intervening Networks (IVN), and the way in which these are handled by PINXs to provide a platform for inter-PINX communication. Different types of IVNs can be used to provide IPCs, in accordance with the scenarios indicated in ISO/IEC 11579-1. These are Overlay Scenarios in that they enable the services of the PISN to operate transparently across an IVN. Connected PINXs need to co-ordinate their use of IVNs, and appropriate standardisation is needed to allow networks to be created employing PINXs and IVNs from multiple vendors. The following points need to be considered: _ In general but depending on the type of IVN, procedures and signalling protocols between the PINXs are needed for the establishment, maintenance and release of IPCs. Appropriate standardisation of these procedures and signalling protocols is necessary. _ At the Q reference point (a conceptual point within a PINX) channels and PISN call control signalling (QSIG) are defined independently of the type of IVN. However, at the C reference point (where the PINX is connected to the IVN), the representation of the channels and of signalling is dependent on the type of IVN, and on how the PINXs use the IPCs. Appropriate standardisation of these aspects at the C reference point is necessary. _ In general the relationship between a channel at the Q reference point and its representation at the C reference point is not static, and procedures and signalling between the PINXs are needed for the co-ordination of these relationships. Appropriate standardisation of these procedures and signalling is necessary. _ Appropriate mechanisms need to be standardised for conveying inter-PINX signalling through the IVN. These will depend on the characteristics of the IPC used. The aim of this Technical Report is to identify: 1. In addition to PISN call control signalling (QSIG), what needs to be standardised, in order to be able to inter-connect PINXs; 2. General techniques, procedures, protocols etc., that apply to of all (or at least very many) types of IVNs.