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1. 发明授权

US06185297B2 Low power dialer 失效
标题翻译：低功率拨号器
公开(公告)号：US06185297B2
公开(公告)日：2001-02-06
申请号：US09079280
申请日：1998-05-15
申请人： Patrick H. Casselman , Marshall W. Pharoah , Valentin Purits , Neal Rudolph , John R. Zabel
发明人： Patrick H. Casselman , Marshall W. Pharoah , Valentin Purits , Neal Rudolph , John R. Zabel
IPC分类号： H04M1100
CPC分类号： H04M1/274566
摘要： A telephone dialer for connection to a public switched telephone network (PSTN) and to a station apparatus, for receiving digits dialed from the station apparatus and for adding digits or substituting digits for the dialed digits and for redialing digits to the PSTN wherein the redialed digits are comprised of the dialed and added digits or comprised of substituted digits, the dialer further comprising an adjustable hold circuit for connection to the PSTN during an interval when the redialed digits are being output, for holding a line associated with the PSTN in an offhook condition, the adjustable hold circuit having a load connectable to the PSTN line which is variable with PSTN line voltage at the dialer such as to draw a variable current sufficient to meet predetermined current and voltage criteria of the line at the dialer.
摘要翻译：一种用于连接到公共交换电话网（PSTN）和站设备的电话拨号器，用于接收从站设备拨打的数字，并为拨号数字添加数字或替换数字，以及将数字重拨到PSTN，其中重拨的数字由拨号和添加的数字组成或由替换的数字组成，拨号器还包括可调保持电路，用于在正在输出重拨数字的间隔期间连接到PSTN，用于将与PSTN相关联的线路保持在摘机状态，可调节保持电路具有可连接到PSTN线路的负载，PSTN线路在拨号器处可用PSTN线路电压变化，以便画出足以满足拨号器线路的预定电流和电压准则的可变电流。

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