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circuit in telecommunications networks with the official headquarters of connections connected, automatic home telephone central, selbsttaetigen capture using individual subscriber stations
circuit in telecommunications networks with the official headquarters of connections connected, automatic home telephone central, selbsttaetigen capture using individual subscriber stations
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机译:电信网络中的电路,具有连接的官方总部,自动家用电话中心,使用单个用户站的硒化钾捕获
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1531671 Automatic exchange systems SODECO-SAIA AG 19 Jan 1977 [26 Jan 1976] 02140/77 Heading H4K The use of telephone extensions of a PABX is detected by periodically feeding tone pulses into active exchange lines and detecting those tones at the extension lines. As shown line current in an exchange line 4 of a PABX7 is detected at 2. Immediately thereafter and after each exchange metering pulse as detected at 1, a monitoring unit 5 repeatedly transmits a train of tone pulses via a coupling unit 4 to the line. A filter 18 prevents the tones reaching the exchange. The trains are verified in a detector 14 individual to the extension line involved. The detector transmits the line identity to monitoring unit 5 where it is printed or logged for billing.
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机译:1531671自动交换系统SODECO-SAIA AG 1977年1月19日[1976年1月26日] 02140/77标题H4K通过定期将音频脉冲馈入活动交换线路并在扩展线路上检测这些音频,来检测PABX电话分机的使用。如图所示,在2处检测到PABX7的交换线路4中的线路电流。此后和在1处检测到每个交换计量脉冲之后,监控单元5立即通过耦合单元4将一连串音调脉冲发送到线路。滤波器18防止音调到达交换处。在与所涉及的延长线相对应的检测器14中验证列车。检测器将线路标识发送到监视单元5,在此处进行打印或记录以进行计费。
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