Home / Standards / GB/T 11589-2011 GB/T 11589-2011 Active International user classes of service in, and categories of access to, public data networks and integrated services digital networks(ISDNs) 公用数据网和综合业务数字网(ISDN)的国际用户业务类别和接入种类 Standard Type GBT ICS 33.040.40 CCS M19 Status 现行 Issue Date 2011-07-29 Implementation 2011-11-01 Responsible Dept 工业和信息化部（通信） Drafting Unit N/A