
【国外标准】 Stage 3 description for additional information transfer supplementary services using B-ISDN digital subscriber signalling system No. 2 (DSS2) - Basic call : User-to-user signalling (UUS)
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2025-06-10
- ITU-T Q.2957.1
- 现行
- 定价: 无文本
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暂无
标准号:
ITU-T Q.2957.1
标准名称:
Stage 3 description for additional information transfer supplementary services using B-ISDN digital subscriber signalling system No. 2 (DSS2) - Basic call : User-to-user signalling (UUS)
英文名称:
标准状态:
现行-
发布日期:
2007-02-01 -
实施日期:
出版语种:
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