发明名称 |
Telephone system in which communication between stations is controlled by computers at each individual station |
摘要 |
A telephone system is provided which requires no central office. All the stations on the system are interconnected by a single line or cable and each station includes a computer which carries out the necessary switching. Each station is then able to call any other station, or to respond to a call, without requiring any central office. Frequency division multiplexing is used to permit a number of conversations to be carried on simultaneously and two frequencies are assigned to each conversation to permit duplex operation. A page capability is also provided.
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申请公布号 |
US4262171(A) |
申请公布日期 |
1981.04.14 |
申请号 |
US19790002067 |
申请日期 |
1979.01.08 |
申请人 |
CATALYST RESEARCH CORPORATION |
发明人 |
SCHNEIDER, ALAN A.;GADWAL, GOVIND R. |
分类号 |
H04Q3/58;H04M9/02;(IPC1-7):H04J1/06 |
主分类号 |
H04Q3/58 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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