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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| YD/T 4164-2022 |
Work coordination mechanism among interconnection and number portability transfer enterprises and inter-network problem handling requirements {译} 互联互通及携号转网企业间工作协调机制和网间问题处理要求 |
China Telecommunication Industry
Standards Work coordination mechanism |
 English PDF |
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