| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 1879-2009 | English | 1029 |
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Technical Requirements of Interworking devices for Softswitch Network
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YD/T 1879-2009
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YD/T 1879-2009
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