标准摘要
[中文适用范围]： 本国际标准规定了符合 ITU-T 建议 I.431 的综合业务数字网 (ISDN) 主速率接入服务物理接口中使用的 8 触点连接器（插头和插孔）及其触点编号的分配。 在本国际标准中，与 ITU-T 建议 I.431 一样，术语“NT”用于指示 NT1 和 NT2 的网络终止层 1 方面，术语“TE”用于指示 NT1 和 NT2 的终端层 1 方面。 TE1、TA 和 NT2。 注 1：本国际标准仅规定了确保插头和插孔互配性所需的连接器尺寸。 连接器的完整详细规范属于 IEC 603-7 的主题，请参阅附录 C。 2 ITU-T 认可本国际标准未涵盖的替代连接系统。 它使用 IEC 169-8 中指定的同轴连接器（参见附录 C），并在附录 B 中进行了说明。 [外文原描述]： This International Standard specifies the 8-contact connector (plug and jack) and the assignments of its contact numbers for use in the physical interfaces of Integrated Services Digital Network (ISDN) primary rate access services conforming to ITU-T Recommendation I.431. In this International Standard, as in ITU-T Recommendation I.431, the term "NT" is used to indicate the network terminating layer 1 aspects of NT1s and NT2s, and the term "TE" is used to indicate terminal layer 1 aspects of TE1s, TAs and NT2s. NOTES 1 This International Standard specifies only those connector dimensions required to ensure intermatability of plug and jack. Complete detailed specifications of the connector are the subject of IEC 603-7, see annex C. 2 ITU-T recognizes an alternative connection system which is not covered by this International Standard. It uses coaxial connectors as specified in IEC 169-8 (see annex C), and is illustrated in annex B.
英文名称Information technology - Telecommunications and information exchange between systems - Interface connector and contact assignments for ISDN primary rate access connector located at reference points S and T