本国际标准定义了实体识别所需的网络地址处理要求 使用或提供由专用综合业务网（PISN）提供的电信服务。这个国际 标准涵盖了编号，包括支持私人编号计划的要求，以及 开放系统互连（OSI NSAP寻址）的网络服务接入点，以及子寻址的支持。 本国际标准适用于宽带和窄带专用综合业务网交换机 功能（PINX）和连接到PINX访问的终端。一品脱的任何使用支持私人 公共ISDN提供的补充业务不在本国际标准的范围内。 尽管本国际标准没有明确描述其在位置独立（移动）可寻址系统中的应用 实体，不排除此应用程序。

This International Standard defines the requirements for the handling of network addresses for the identification of entities which use or provide telecommunication services offered by Private Integrated Services Networks (PISNs). This International Standard covers numbering, including the requirements for the support of a Private Numbering Plan, the addressing of network service access points for open systems interconnection (OSI NSAP addressing), and the support of subaddressing. This International Standard is applicable to Private Integrated Services Network Exchanges with broad-band and narrow-band capabilities (PINX) and to terminals to be attached to the access of PINXs. Any use by a PINX of the Support of Private Numbering Plans supplementary service provided by a public ISDN is outside the scope of this International Standard. Although this International Standard does not explicitly describe its application to location-independent (mobile) addressable entities, this application is not precluded.