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1.发明公开DEVICE FOR TELEPHONE LINE DISENGAGEMENT FOLLOWING THE RECEPTION OF A CALL WAITING 审中-公开UNIT FOR电话线免除到接收呼叫等待FOLLOWS
公开(公告)号：EP1247393A1
公开(公告)日：2002-10-09
申请号：EP00981632.3
申请日：2000-11-16
CPC分类号： H04M3/4285 , H04M7/006
摘要： A device for telephone line disengagement following the reception of a call-waiting signal, comprising means adapted to detect electrical variations of the telephone line consequent to the transmission of a call-waiting signal, the electrical variation detection means being connected to means for disengaging the line which are adapted to disengage the modem from the telephone line, allowing the user to reply to the incoming call.
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