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Professional Standard Category: Professional Standard - Telecommunication |
Category No.: | YD | Valid Status: | superseded |
Issued Organization: | Ministry of Posts and Telecommunications | Issued Date: | 1997-03-27 |
Implemented Date: | 1997-7-1 | Abolished Date: | |
Superseded Standard.: | YD/T 907-2011 Regulations for numbers, letters and signs for dialing over telephone set and other equipment accessed to telephone network |
Superseded Date: | 2011-6-1 |
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