发明名称 TELEPHONE SYSTEM HAVING NUMBER DISPLAY FUNCTION
摘要 PROBLEM TO BE SOLVED: To surely confirm call origination source information on the side of a telephone set in the case of utilizing a number display service. SOLUTION: This telephone system is provided with a call origination source detector 1 serially connected to a telephone line L on the preceding stage of a telephone set T and a call origination source information display device 2 provided near the telephone set T, the call origination source information detector 1 is provided with a call origination source information receiving means 15 for receiving the call origination source information sent from an exchange through the telephone line L and a wireless transmission means 16 for wirelessly transmitting this received call origination source information, and the call origination source information display device 2 is provided with a wireless reception means 22 for wirelessly receiving the call origination source information transmitted from the call origination source information detector and a call origination source information display means 23 for displaying this received call origination source information.
申请公布号 JP2000004286(A) 申请公布日期 2000.01.07
申请号 JP19980167074 申请日期 1998.06.15
申请人 MATSUSHITA ELECTRIC WORKS LTD 发明人 KUMAGAI TAKASHI
分类号 H04M3/42;H04M1/00;H04M1/57;(IPC1-7):H04M1/57 主分类号 H04M3/42
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