本文件详细说明了未配备扩展功能的机架和机柜的要求。具有扩展功能的机架/机柜可用于容纳构成公共电信网络一部分的电信设备，该网络安装在公共电信运营商的现场或运营商客户的场所。具有扩展功能的机架/机柜允许容纳各种设备，例如子机架（见ETSI EN 300 119-4[i.4]），并提供门或盖。ETSI EN 300 119-1[i.1]定义了本文件中机架或机柜的含义。

The present document details requirements for racks and cabinets with extended features supplied unequipped. The racks/cabinets with extended features can be used for housing telecommunication equipment forming part of a public telecommunication network installed either on the public telecommunication operators' sites or in the premises of operator's customers. The racks/cabinets with extended features allow to accommodate various equipment, e.g. subracks (see ETSI EN 300 119-4 [i.4]) and have provisions for doors or covers.ETSI EN 300 119-1 [i.1] defines the meaning of rack or cabinet in the context of the present document.