儿童求助热线号码选择方面的指导意见 |
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ITU-T E.164建议书增补5审议和研究了在全球统一国家号码选择方法的构想,并请国家主管部门考虑在全球统一与求助热线,特别是向儿童提供帮助的求助热线相关的号码。 |
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Approved on |
Download |
Radio fequency-level based single-number indicator for mobile network usefulness for a given range of applications
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2023
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here
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Technical Report on analysis of ITU-T F.930
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2020
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here
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Identify call location for emergency service
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2020
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here
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ISDN field trial guidelines
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1991
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here
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