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YD/T 1157.4-2016
YD/T 1157.4-2016 Transmission of inter-exchange caller number (supplementary part 4)
General Product Information
| Document Type | Industry standards-Postal and telecommunications |
|---|---|
| Standard Status | Abolished |
| Standard Code | YD/T 1157.4-2016 |
| CCS | Communication network |
| ICS | Telecommunications system |
| Implement Date | 2016-07-11 |
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$ 20.00