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公开(公告)号：EP0304998A3
公开(公告)日：1989-07-26
申请号：EP88201771.8
申请日：1988-08-18
CPC分类号： H04M1/727 , H04M1/72505
摘要： A PABX cordless telephone system comprising a base station (10) and a plurality of handset (HS1 to HS5). The base station is connected to the public switching network and communicates with each handset by way of a respective duplex radio link. The operation of the PABX system is controlled by a micro-controller (16) in the base station. Micro-controllers are also present in each of the handsets. Security in the radio communication via the duplex radio links is provided by assigning an n-bit security address code, where n for example comprises 16 bits, to each handset. The signalling protocols in setting-up calls require the transmission of the full n-bit security code. In the interim periods the base station (10) carries out a security check on the handsets forming its system. Time, memory capacity in the micro-controllers and battery current can be saved whilst simultaneously achieving a high degree of security if the security check is carried out using m bits of the security codes where m
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公开(公告)号：EP0304998B1
公开(公告)日：1993-07-07
申请号：EP88201771.8
申请日：1988-08-18
CPC分类号： H04M1/727 , H04M1/72505
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3.发明公开
公开(公告)号：EP0304998A2
公开(公告)日：1989-03-01
申请号：EP88201771.8
申请日：1988-08-18
CPC分类号： H04M1/727 , H04M1/72505
摘要： A PABX cordless telephone system comprising a base station (10) and a plurality of handset (HS1 to HS5). The base station is connected to the public switching network and communicates with each handset by way of a respective duplex radio link. The operation of the PABX system is controlled by a micro-controller (16) in the base station. Micro-controllers are also present in each of the handsets. Security in the radio communication via the duplex radio links is provided by assigning an n-bit security address code, where n for example comprises 16 bits, to each handset. The signalling protocols in setting-up calls require the transmission of the full n-bit security code. In the interim periods the base station (10) carries out a security check on the handsets forming its system. Time, memory capacity in the micro-controllers and battery current can be saved whilst simultaneously achieving a high degree of security if the security check is carried out using m bits of the security codes where m
摘要翻译： 一种PABX无绳电话系统，包括基站（10）和多个手机（HS1至HS5）。 基站连接到公共交换网络，并通过相应的双工无线电链路与每个手机进行通信。 PABX系统的操作由基站中的微控制器（16）控制。 微控制器也存在于每个手机中。 通过经由双工无线电链路的无线电通信中的安全性是通过向每个手机分配n比特安全地址码，其中n例如包括16比特。 设置呼叫中的信令协议需要传输完整的n位安全码。 在临时期间，基站（10）在形成其系统的手机上执行安全检查。 如果使用m
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