标准摘要
[中文适用范围]： GB／T 21204的本部分规定了在严酷环境下使用时对绞或星绞多芯对称电缆的定义和试验方法， 这种电缆用于数字通信系统，如综合业务数字网(1SDN)、局域网和数据通信系统。本部分是这类电缆 的设计和试验的导则。 [外文原描述]： specifies the definitions and test methods, when used in harsh environment, of symmetrical pair and quad cables used in digital communication systems such as ISDN, local area networks and data communication systems. gives guidance concerning the design and testing of these cables.
英文名称Multicore and symmetrical pair/quad cables for digital communications to be used in harsh environments - Part 1: Generic specification