| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 2253-2011 | English | 629 |
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Days<=5
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Communication security specification of soft switch-based network
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YD/T 2253-2011
| Valid |
YD/T 2253-2011
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