ITU-T G.126-1993 标准详情
- 标准号:ITU-T G.126-1993
- 中文标题:电话网中的受话回声
- 英文标题:listener echo in telephone networks
- 标准类别:国际电信联盟标准
- 发布日期:1993-03-01
A telephone connection between two subscribers in telephone networks usually contains one or more 2-4-2-wire loops (further referred to as 4-wire loop), as the connection may encounter a mixture of 2- and 4-wire analogue and digital switching and tra
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