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1. 发明授权

US06292544B1 Message waiting indicator in a computer integrated telephony system 失效
标题翻译：计算机集成电话系统中的消息等待指示符
公开(公告)号：US06292544B1
公开(公告)日：2001-09-18
申请号：US09055204
申请日：1998-04-06
申请人： Greig R. Detering , Eric A. Jones
发明人： Greig R. Detering , Eric A. Jones
IPC分类号： H04M164
CPC分类号： H04M1/6505
摘要： A computer integrated telephone system that uses the computer's display, internal audio system, or an external interface to indicate that a voice message is waiting. The invention operates with a telephony protocol that supports in-band signaling having Message Waiting ON and Message Waiting OFF messages. The invention is embodied in a PC and includes a telephone interface that interacts with the telephone network to receive Message Waiting ON and Message Waiting OFF messages. In response to the Message Waiting ON message, the telephone interface communicates with software logic on the computer to cause the computer to indicate in an overt manner that a voice message is waiting. In response to the Message Waiting OFF message, the telephone interface communicates with software logic on the computer to cause the computer to turn off the message waiting indicator.
摘要翻译：使用计算机显示器，内部音频系统或外部接口的计算机集成电话系统来指示语音消息正在等待。本发明利用电话协议进行操作，该电话协议支持具有消息等待开启和消息等待关闭消息的带内信令。本发明体现在PC中，并且包括与电话网络交互以接收消息等待开启和消息等待关闭消息的电话接口。响应于等待消息等待消息，电话接口与计算机上的软件逻辑通信，使得计算机以公开的方式指示语音消息正在等待。响应消息等待关闭消息，电话接口与计算机上的软件逻辑通信，使计算机关闭消息等待指示。

2. 发明授权

US6041107A Telephone extension switch hook state detection system 失效
标题翻译：电话分机开关挂钩状态检测系统
公开(公告)号：US6041107A
公开(公告)日：2000-03-21
申请号：US70058
申请日：1998-04-30
申请人： Eric A. Jones , Greig R. Detering
发明人： Eric A. Jones , Greig R. Detering
IPC分类号： H04M1/723 , H04M1/82 , H04M1/00
CPC分类号： H04M1/723 , H04M1/82
摘要： A computer integrated telephony system embodied in a PC that includes a telephony interface connected to the local loop that detects whether one or more extension phones are off-hook by using the signal generating and detection capabilities found on a typical telephony interface card. In the preferred embodiment, the telephony interface is based on a programmable DSP that generates and injects onto the local loop a subsonic signal having a known shape and amplitude. If one or more extensions are off-hook, the amplitude of the subsonic signal detected on the line will be significantly attenuated. The amplitude of the detected signal is compared against a threshold value and an indication is made if the detected signal amplitude is below the threshold value.
摘要翻译：一种包含在PC中的计算机集成电话系统，其包括连接到本地环路的电话接口，该电话接口通过使用在典型电话接口卡上发现的信号产生和检测能力来检测一个或多个分机电话是否摘机。在优选实施例中，电话接口基于可编程DSP，其产生并向本地环路注入具有已知形状和幅度的亚音速信号。如果一个或多个分机摘机，则在线上检测到的亚音速信号的振幅将被显着衰减。将检测到的信号的幅度与阈值进行比较，并且如果检测到的信号幅度低于阈值则进行指示。

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