PRETS 300283-1992 标准详情
- 标准号:PRETS 300283-1992
- 中文标题:
- 英文标题:Business Telecommunications (bt); Planning Of Loudness Rating And Echo Values For Private Networks Digitally Connected To The Public Network
- 标准类别:欧洲通信ETS,I-ETS,PRI-ETSETS
- 发布日期:
Relates to Private Branch Networks (PBNs) with a digital access to the ISDN/PSTN with a fully 4-wire call path between the Network Connection Point (NCP) and International Switching Centre (ISC). Applies to call paths between the NCP and the terminal
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