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公开(公告)号：US6005921A
公开(公告)日：1999-12-21
申请号：US919511
申请日：1997-08-28
摘要： A device and method for testing a telephone circuit in which a caller takes advantage of available caller identification information to complete a ringback test without resort to potentially costly and overused toll trunks. The ringback test device is accessed by a caller (subscriber or craftsperson) who may not be aware of the telephone number from which he is calling when the caller completes a call to a telephone number assigned to the device. As the caller is accessing the test device, the test device detects the caller identification available between the first and second rings to identify the caller's telephone number, and answers the call after the second ring. The test device presents the telephone number to the caller, and the test device may thereafter be used to complete a ringback test to the identified telephone number. The caller ID information may also be display-formatted at the test device and provided to a caller's visual display.
摘要翻译： 一种用于测试电话电路的设备和方法，其中呼叫者利用可用的呼叫者识别信息来完成回铃测试，而不需要采取潜在的昂贵和过度使用的收费中继。 当呼叫者完成对分配给该设备的电话号码的呼叫时，回铃测试设备可由主叫方（用户或技术人员）访问，呼叫者可能不知道他正在呼叫的电话号码。 当呼叫者正在访问测试设备时，测试设备检测在第一和第二振铃之间可用的呼叫者识别，以识别呼叫者的电话号码，并在第二响铃之后应答呼叫。 测试设备向呼叫者显示电话号码，然后测试设备可以用于完成对所识别的电话号码的回铃测试。 呼叫者ID信息也可以在测试设备处显示格式化，并提供给呼叫者的视觉显示。
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2.发明授权Arrangement for testing telephone subscriber line circuit via B-ISDN channel linking central office test system and metallic channel unit installed in digital loop carrier remote terminal 失效通过连接中心局测试系统和安装在数字环路载波远程终端中的金属通道单元的B-ISDN通道测试电话用户线电路的安排
公开(公告)号：US5680391A
公开(公告)日：1997-10-21
申请号：US492507
申请日：1995-06-20
CPC分类号： H04Q11/045 , H04M3/303
摘要： A subscriber line circuit test and conditioning arrangement for use with a non-metallic (fiber optic) digital communication path-based digital communication network employs a single (basic rate ISDN) metallic channel unit (BMCU) installed at a site terminating the fiber optic communication path. A BMCU communicates with a central office test system using an auxiliary B-ISDN communication `test` channel portion (2B+D) channels of the time division multiplexed digital communication DS0 channels. Digital command and response signals are transported by the two ISDN bearer (B) channels and are coupled directly to tip and ring digital signal processors in the central office test system, without the need for intermediate digital-to-analog and analog-to-digital conversion by a metallic channel unit at a central office terminal, and that additionally performed by a central office terminal and central office switch. The data (D) channel is employed to conduct access, calibration and control communications with the metallic channel unit.
摘要翻译： 用于非金属（光纤）数字通信路径的数字通信网络的用户线电路测试和调理装置采用安装在终端光纤通信的站点处的单个（基本速率ISDN）金属信道单元（BMCU） 路径。 BMCU使用时分复用数字通信DS0信道的辅助B-ISDN通信“测试”信道部分（2B + D）信道与中心局测试系统进行通信。 数字命令和响应信号由两个ISDN承载（B）信道传输，并且直接耦合到中心局测试系统中的尖端和环形数字信号处理器，而不需要中间的数模转换器和模数转换器 由中央办公室终端处的金属通道单元进行转换，另外由中心局终端和中心局交换机执行。 采用数据（D）通道进行与金属通道单元的通信，校准和控制通信。
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