| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 1979.1-2009 | English | 639 |
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Days<=3
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Technical requirements of roaming from 3G to 2G network and from 3G to 3G network managed by different operators. Part 1: Roaming from TD-SCDMA to GSM/GPRS network and roaming from TD-SCDMA to TD-SCDMA network
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YD/T 1979.1-2009
| Obsolete |
YD/T 1979.1-2009
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