本标准涵盖了电信网络设备设施和类似功能空间内使用的设备组件、选定产品和材料的耐火特性。本标准——以及最新发布的T1版本。319（本出版物发布时为T1.319-2002）——应作为评估具有类似功能的电信网络设备设施或空间内火灾风险的手段。

This standard covers the fires resistance characteristics of equipment assemblies and selected products and materials used within telecommunications network equipment facilities and spaces of similar function. This standard - along with that latest published version of T1.319 (which is T1.319-2002 at the time of this publication) - shall be used as the means of appraising fire risk within a telecommunications network equipment facility or space with similar function.