发明名称 SUBSCRIBER LOOP EXTENSION SYSTEM FOR ISDN BASIC RATE INTERFACES
摘要 A system and method for reducing signal attenuation of integrated services digital network (ISDN) digital transmissions at the subscriber loop, thereby increasing the available subscriber loop range, is provided. An ISDN digital transmission system is used for transmitting and receiving digital information via a line termination at a central office. Customer premises equipment is coupled to a network termination (NT-1) within the customer premises, which is in turn coupled to interface the line termination at the central office. A plurality of inductive load coils are coupled in series with the two-wire subscriber loop ISDN BRI at predetermined distance intervals, which are calibrated to resonate the two-wire bus.
申请公布号 WO9844757(A3) 申请公布日期 1999.02.04
申请号 WO1998US05711 申请日期 1998.03.24
申请人 DIGI INTERNATIONAL 发明人 SANDERSON, LELON, W.
分类号 H04B3/26;H04Q11/04 主分类号 H04B3/26
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