| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 1883.1-2009 | English | 639 |
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Technical Requirements and Testing Methods for Charging Performance of Voice Service of the Fixed Softswitch Network. Part 1: TG and SG Access Mode
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YD/T 1883.1-2009
| Obsolete |
YD/T 1883.1-2009
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