标准号:ETS 300 448-1996
中文标准名称:ETS 300 448-1996
英文标准名称:Business Telecommunications (BTC); Ordinary Quality Voice Bandwidth 2-Wire Analogue Leased Line (A2O); Connection Characteristics and Network Interface Presentation
发布日期:1996-01-01
实施日期:2014-04-10