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2. 发明公开

EP0242030A2 Distributed telephone system 失效
标题翻译： Verteiltes Fernsprechsystem。
公开(公告)号：EP0242030A2
公开(公告)日：1987-10-21
申请号：EP87301616.6
申请日：1987-02-24
申请人： Bartholet, Chauncey I , Hardy, Joseph
发明人： Bartholet, Chauncey I , Hardy, Joseph
IPC分类号： H04M9/02 , H04Q11/02
CPC分类号： H04M9/027
摘要： A distributed telephone communication system (50) interconnects telephone units (52) via a single transmission line (56) providing full duplex communication between any pair of telephones (52). Each telephone (52) is coupled to the transmission line (56) by a control unit (54) which pages other control units (54) to initiate a telephonic communication. Each control unit (54) has an identification number and circuitry (60) for recognizing the identification number contained within a paging signal so as to initiate a response. In a separate spectral portion of the transmission line (56), there are provided sets of analog communication channels each of which has upper and lower spectral portions to provide two-way communication in opposite directions between a pair of tehephones (52) engaged in communication. A transmitter (22) and a receiver (23) in each of the control units (54) is provided for the communication of analog signals of both voice and date via the voice channel. Each control unit (54) includes circuitry (1A, 1B) for tuning the transmitter (22) and the receiver (23) to the selected channel in accordance with digital data transmitted via a transmission line (56) and specifying a selected one of the voice channels.
摘要翻译：分布式电话通信系统（50）经由提供任何一对电话（52）之间的全双工通信的单个传输线（56）来互连电话单元（52）。每个电话（52）通过控制单元（54）耦合到传输线（56），控制单元（54）寻找其他控制单元（54）以启动电话通信。每个控制单元（54）具有标识号和电路（60），用于识别包含在寻呼信号内的标识号，以便发起响应。在传输线（56）的单独光谱部分中，提供了一组模拟通信信道，每个模拟通信信道具有上和下光谱部分，以在一对从事通信的一对手机（52）之间的相反方向上提供双向通信。提供每个控制单元（54）中的发射机（22）和接收机（23），用于通过语音信道通信语音和日期的模拟信号。每个控制单元（54）包括用于根据经由传输线（56）发送的数字数据将发射机（22）和接收机（23）调谐到所选择的信道的电路（1A，1B），并指定所选择的一个语音通道。

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