【国外标准】 Determination of the moment of the called subscriber's answer in the automatic service
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2025-10-22
- ITU-T Q.28
- 现行
- 定价: 无文本
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标准号:
ITU-T Q.28
标准名称:
Determination of the moment of the called subscriber's answer in the automatic service
英文名称:
标准状态:
现行-
发布日期:
2025-11-01 -
实施日期:
出版语种:
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