本文件规定: -系统级物理层的要求，-互操作性测试设置的要求，-检查系统级物理层要求的互操作性测试计划，-设备级物理层一致性测试设置的要求，以及检查OSI一组要求的设备级物理层一致性测试计划 与设备供应商相关的物理层。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies: — requirements on the physical layer at system level,— requirements on the interoperability test set-ups,— interoperability test plan that checks the requirements for the physical layer at system level,— requirements on the device-level physical layer conformance test set-ups, and— device-level physical layer conformance test plan that checks a set of requirements for the OSI physical layer that are relevant for device vendors.All current amendments available at time of purchase are included with the purchase of this document.