Home / Standards / GB/T 21645.3-2009 GB/T 21645.3-2009 Active Technical requirements for automatically switched optical network - Part 3: Data communication network 自动交换光网络(ASON)技术要求 第3部分:数据通信网(DCN) Standard Type GBT ICS 33.040.20 CCS M33 Status 现行 Issue Date 2009-09-30 Implementation 2009-12-01 Responsible Dept 工业和信息化部(通信) Drafting Unit N/A