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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 5171-2009 |
Provisional Acceptance Specification for Individuation Ring Back Tone Platform 个性化回铃音平台工程验收暂行规定 |
China Telecommunication
Standards Individuation |
 English PDF |
| YD/T 5170-2009 |
Provisional Specification of Engineering Design for Individuation Ring Back Tone Platform 个性化回铃音平台工程设计暂行规定 |
China Telecommunication
Standards Individuation |
English PDF |
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