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11. 发明授权

US5390233A Telephone call transfer between a wireless and wired telephone 失效
标题翻译：无线和有线电话之间的电话呼叫转移
公开(公告)号：US5390233A
公开(公告)日：1995-02-14
申请号：US114567
申请日：1993-08-31
申请人： John P. Jensen , Michael R. Ross
发明人： John P. Jensen , Michael R. Ross
IPC分类号： H04M1/725 , H04W4/00 , H04M11/00
CPC分类号： H04M1/006 , H04M1/725 , H04W4/00
摘要： A wireless network controller supports telephone call between a wireless telephone and a wired telephone. First and second wired communication channels are connected to a telecommunication switch and the wired telephone, respectively. A third wired communication channel is coupled to a radio frequency base station that supports a plurality of concurrent wireless communication channels to wireless telephones. An interface circuit coupled to the first, second, and third channels switches the connection of the first channel associated with the telecommunication switch between the second and third channels, and hence between the wired and wireless telephones. Simultaneous connection to both the wireless and wired telephones is also supported. A conventional line terminating impedance is always presented to the switch regardless of whether one or both of the wireless and wired telephones are off-hook.
摘要翻译：无线网络控制器支持无线电话和有线电话之间的电话呼叫。第一和第二有线通信信道分别连接到电信交换机和有线电话。第三有线通信信道耦合到支持多个并行无线通信信道到无线电话的射频基站。耦合到第一，第二和第三信道的接口电路在第二和第三信道之间，因此在有线和无线电话之间切换与电信交换机相关联的第一信道的连接。还支持与无线和有线电话的同时连接。无论无线和有线电话中的一个或两个是摘机，始终将传统的线路终端阻抗呈现给交换机。

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