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2. 发明公开

EP0268205A2 Methods of and system for providing substantially error-free transmitted data 失效
标题翻译：用于实现基本上无差错的数据传输方法和装置。
公开(公告)号：EP0268205A2
公开(公告)日：1988-05-25
申请号：EP87116694.8
申请日：1987-11-12
申请人： AT&T Corp.
发明人： Friesen, Harold Wayne , Haber, Janice Bilecky , Nutt, Wendell Glenn
IPC分类号： H04B3/32
CPC分类号： H04B3/32
摘要： In a system (20) for transmitting voice and data signals, insulated metallic conductor pairs (44-44) which transmit data signals and insulated metallic conductor pairs (46-46) which are capable of transmitting voice signals are enclosed in a common sheath system of a single cable (40). User pickup of station apparatus (34) during the generation of a ringing voltage on a voice conductor pair causes that pair to become disturbing and to impart impulse noise to a closely coupled data pair. The data pair is designated a disturbed pair and the signals transmitted thereby may be affected adversely. This problem is overcome by providing a circuit (80) comprising in parallel a resistance and an inductance and being in series with the station apparatus. Such an arrangement reduces substantially that frequency content of any disturbing signal which appears on the disturbing pair and which is in the range of the data signal spectrum. This reduces the magnitude of crosstalk between the voice and data pairs and results in substantially error-free transmitted data
摘要翻译：在用于传输语音和数据信号，绝缘金属导线对（44-44）哪种发送数据信号和绝缘金属导线对（46-46），其能够传输语音信号被包含在一个共同的护套系统的系统（20）的单条电缆（40）。上的语音导线对振铃电压的产生期间站装置（34）的用户拾取导致没有对成为干扰和脉冲噪声赋予一个紧密耦合的数据对。数据对被指定为干扰对和信号反式mitted从而可能受到不利影响。这种麻烦是通过提供并联的电阻和电感，以包括电路（80）以及与所述基站装置系列被克服。上布置搜索减少基本上没有哪个上扰对显示任何干扰信号的频率内容和所有它是在数据信号频谱范围内。这降低了语音和数据对与结果之间的串扰的大小错误基本上不含反式mitted数据

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