| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 2007-2009 | English | 2279 |
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Days<=10
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Function and architecture for the unified IMS (Release 1)
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YD/T 2007-2009
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YD/T 2007-2009
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