YD-T-1979-1–2009

1CS33.030M21YO中华人民共和国通信行业标准YDT1979.1-2009不同运营商间3G到2G网络、3G到3G网络漫游技术要求第1部分：TD-SCDMA到GSM/GPRS网络、TD-SCDMA到TD-SCDMA网络漫游Technical Requirements of Roaming from 3G to 2G Network and from3G to 3G Network Managed by Different OperatorsPart 1:Roaming from TD-SCDMA to GSM/GPRS Network andRoaming from TD-SCDMA to TD-SCDMA Network2009-12-11发布2010-01-01实施中华人民共和国工业和信息化部发布