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公开(公告)号：US06456713B1
公开(公告)日：2002-09-24
申请号：US09109609
申请日：1998-07-02
IPC分类号： H04M100
CPC分类号： H04M11/06 , H04M3/42314
摘要： A circuit for notifying a PBX that a data port in a telephone connected to the PBX is about to be used. The circuit comprises a current sensor for generating a signal that indicates a modem is drawing current through the data port. A large resistor limits the current being drawn through the data port to a level that does not indicate an off-hook condition to either the PBX or the modem. In response to the signal generated by the current sensor, a separate telephone circuit provides an off-hook condition that draws a first dial tone from the PBX. A microprocessor in the circuit generates a signal that causes a dialer in the telephone circuit to dial a number that notifies the PBX that the modem is attempting to access the PBX through the data port. After the PBX is notified of the imminent data port usage, it presents a second dial tone on line two which is the dial tone for an outside line. The microprocessor then activates a thyristor which electrically bypasses the resistor and allows sufficient current to be drawn by the modem to maintain the off-hook condition.
摘要翻译： 用于通知PBX的电路将要使用连接到集团电话的电话中的数据端口。 该电路包括用于产生指示调制解调器正在通过数据端口绘制电流的信号的电流传感器。 一个大电阻将通过数据端口吸取的电流限制在不表示PBX或调制解调器的摘机状态的水平。 响应于由电流传感器产生的信号，单独的电话电路提供从PBX抽取第一拨号音的摘机状态。 电路中的微处理器产生一个信号，使得电话电路中的拨号器拨打一个号码，该号码通知PBX调制解调器试图通过数据端口访问PBX。 在PBX被通知即将来临的数据端口使用之后，它会在第二行显示第二个拨号音，这是外线的拨号音。 然后微处理器激活电路旁路电阻器的晶闸管，并允许调制解调器提供足够的电流以保持摘机状态。
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公开(公告)号：US06252957B1
公开(公告)日：2001-06-26
申请号：US09168297
申请日：1998-10-07
IPC分类号： H04M100
CPC分类号： H04M1/72
摘要： A line-powered circuit for connecting a telephone line to a telephone voice circuit comprised of a digital part and an analog part. The digital part is a logic circuit for generating a line connect signal that indicates a telephone line should be connected to the voice circuit. The power for operating the logic circuit is provided by the line voltage associated with the tip and ring leads of the telephone line. The analog part comprises a first switch means for connecting the voice circuit to the tip lead in response to the line connect signal, and a second switch means for connecting the voice circuit to a ring lead in response to the line connect signal.
摘要翻译： 一种用于将电话线连接到由数字部分和模拟部分组成的电话语音电路的线路供电电路。 数字部分是用于产生指示电话线应该连接到语音电路的线路连接信号的逻辑电路。 用于操作逻辑电路的电源由与电话线的尖端和环形引线相关联的线路电压提供。 模拟部分包括用于响应于线路连接信号将语音电路连接到尖端引线的第一开关装置和用于响应于线路连接信号将语音电路连接到环形引线的第二开关装置。
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公开(公告)号：US07251321B2
公开(公告)日：2007-07-31
申请号：US10631914
申请日：2003-07-30
IPC分类号： H04M1/00
CPC分类号： H04M19/04 , H04M19/042
摘要： Crescendo telephone ringers and methods of providing a crescendo telephone ring signal. The crescendo telephone ringer provides a gradual increase in audible ringing volume as a sequence of incoming electrical ring signals is detected. According to one embodiment, upon receipt of an incoming call, a first audible ring signal corresponding to a first detected electrical ring signal is set to a minimum volume. Subsequent audible ring signals corresponding to subsequent detected electrical ring signals are set to increasing volume levels, and finally to a maximum ringer volume.
摘要翻译： 渐强电话铃声和提供渐强电话铃声信号的方法。 渐强电话铃声提供了可听响铃音量的逐渐增加，因为检测到一系列进入的电环信号。 根据一个实施例，在接收到来电时，对应于第一检测到的电环信号的第一可听振铃信号被设置为最小音量。 对应于随后检测到的电环信号的随后的可听铃信号被设置为增加音量级别，最后设置为最大振铃音量。
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公开(公告)号：US06567512B1
公开(公告)日：2003-05-20
申请号：US09366747
申请日：1999-08-04
申请人： Spencer L. Hermanson , William G. Marks , Mario E. Jauregui , Charles R. Jackson , Maxim Bakaleynik
发明人： Spencer L. Hermanson , William G. Marks , Mario E. Jauregui , Charles R. Jackson , Maxim Bakaleynik
IPC分类号： H04M342
CPC分类号： H04M1/2745
摘要： An electronic programmer for the auto-dial functions of a telephone comprises an apparatus which electrically connects the rows and columns lines on the keyboard of a telephone so as to mimic the pressing the buttons on the telephone keypad.
摘要翻译： 一种用于电话自动拨号功能的电子编程器包括电连接电话键盘上的行和列线以便模拟按压电话键盘上的按钮的装置。
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公开(公告)号：US20050025306A1
公开(公告)日：2005-02-03
申请号：US10631914
申请日：2003-07-30
CPC分类号： H04M19/04 , H04M19/042
摘要： Crescendo telephone ringers and methods of providing a crescendo telephone ring signal. The crescendo telephone ringer provides a gradual increase in audible ringing volume as a sequence of incoming electrical ring signals is detected. According to one embodiment, upon receipt of an incoming call, a first audible ring signal corresponding to a first detected electrical ring signal is set to a minimum volume. Subsequent audible ring signals corresponding to subsequent detected electrical ring signals are set to increasing volume levels, and finally to a maximum ringer volume.
摘要翻译： 渐强电话铃声和提供渐强电话铃声信号的方法。 渐强电话铃声提供了可听响铃音量的逐渐增加，因为检测到一系列进入的电环信号。 根据一个实施例，在接收到来电时，对应于第一检测到的电环信号的第一可听振铃信号被设置为最小音量。 对应于随后检测到的电环信号的随后的可听铃信号被设置为增加音量级别，最后设置为最大振铃音量。
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