Home / Standards / GB/T 31240-2014 GB/T 31240-2014 Abolished Information technology―Pathways and spaces for customer premises cabling 信息技术 用户建筑群布缆的路径和空间 Standard Type GBT ICS 35.200;33.040.20 CCS L65 Status 废止 Issue Date 2014-12-05 Implementation 2015-05-01 Responsible Dept 国家标准委 Drafting Unit N/A