| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 2946-2015 | English | 459 |
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Days<=4
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(IMS-based VoLTE networks and 2G / 3G / 4G network voice service interworking technical requirements)
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YD/T 2946-2015
| Valid |
YD/T 2946-2015
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