Home / Standards / YD/T 1238-2002 YD/T 1238-2002 Active 基于SDH的多业务传送节点技术要求 Standard Type YD ICS N/A CCS N/A Status Active Issue Date 2002-11-06 Implementation 2002-11-06 Centralized Committee 信息产业部 Issuing Authority 信息产业部