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51. 发明公开

EP0824294A2 Detecting high usage telecommunications lines 失效
标题翻译： Detektion von Telekommunikationsleitungen mit starkem Verkehr
公开(公告)号：EP0824294A2
公开(公告)日：1998-02-18
申请号：EP97305701.1
申请日：1997-07-29
申请人： LUCENT TECHNOLOGIES INC.
发明人： Dunn, James Patrick , Lassig, Mark Alan , Dvorak, Don Howard
IPC分类号： H04M3/36 , H04M11/06
CPC分类号： H04M3/2272 , H04M3/36 , H04M7/12
摘要： High usage lines in a telecommunications system must be detected to avoid local areas of high call blockage. Such high usage lines are frequently lines that originate or receive data calls. The presence of a data call is detected by testing for a signal, such as a tone, on the call connection after an answer signal has been detected. Lines which originate or receive data calls are then monitored to measure their usage. Advantageously, many high usage lines can be detected by monitoring only the relatively few lines that originate or receive data calls.
摘要翻译：必须检测电信系统中的高使用率线路，以避免局部地区的高呼叫阻塞。这种高使用率的线路是经常发生或接收数据呼叫的线路。在检测到应答信号之后，通过测试呼叫连接上的信号（例如音调）来检测数据呼叫的存在。然后监视发起或接收数据呼叫的线路以测量其使用情况。有利的是，可以通过仅监视发起或接收数据呼叫的相对较少的线路来检测许多高使用率线路。

52. 发明授权

EP0551530B1 Amplifier biasing circuit suitable for a ring-trip detection system 失效
标题翻译：适合于在Rufabschaltungserkennungssystem放大器偏置电路
公开(公告)号：EP0551530B1
公开(公告)日：1997-12-29
申请号：EP91203307
申请日：1991-12-16
申请人： ALSTHOM CGE ALCATEL
发明人： WILLOCX EDDIE LOUIS MARIE , VERKINDEREN JOHAN GABRIEL AUGU
IPC分类号： H03G5/16 , H03F3/45 , H04M3/22 , H04M19/02
CPC分类号： H04M19/026 , H03F3/45479 , H04M3/2272

53. 发明授权

EP0636295B1 WIDEBAND TELEPHONE LINE INTERFACE CIRCUIT 失效
标题翻译：宽带用户线接口电路
公开(公告)号：EP0636295B1
公开(公告)日：1997-05-07
申请号：EP93905125.6
申请日：1993-03-17
申请人： NORTHERN TELECOM LIMITED
发明人： ROSCH, Reinhard W. , ROSENBAUM, Stanley, D.
IPC分类号： H04M19/00 , H04M3/22
CPC分类号： H04M19/001 , H04M3/2272
摘要： A line interface circuit for a two-wire telephone line comprises two feed resistors (40) connected in series with two primary windings of a transformer (38), and differential amplifiers (50) capacitively coupled to a secondary winding of the transformer and coupled to a current sensing network (44) for providing a balanced output dependent upon current flowing through the feed resistors. Each amplifier has d.c. and a.c. feedback paths (52 to 58) arranged to compensate for resistance of the transformer secondary winding. A further amplifier (62) is arranged in a path from the outputs to the inputs of the differential amplifiers to reduce common mode signals at the differential amplifiers. An output of the further amplifier and a potential divider (66) across the line are coupled to a summing node (68) to provide a signal representing common mode current on the line.

54. 发明公开

EP0759672A1 Minimally invasive current sensing circuit 失效
标题翻译： Gering侵入性stromfühlendeSchaltung
公开(公告)号：EP0759672A1
公开(公告)日：1997-02-26
申请号：EP95401936.0
申请日：1995-08-23
申请人： AT&T IPM Corp.
发明人： MacDonald, Alistair Malcolm
IPC分类号： H04M3/22 , G01R15/14 , H04B10/00
CPC分类号： G01R15/146 , H04B10/807 , H04M3/2272
摘要： A minimally invasive detection circuit (10) for determining whether a current flow is present in an electrical conductor, such as a telephone line (TIP/RING), without appreciably loading the conductor. A load (R 1 ) is placed in series with the conductor to generate a voltage drop when current flows therethrough. The voltage drop is detected by powered components (18) that provide a signal, across an electrical isolation barrier (22), to an electrically isolated output (26). The powered components are powered (via 30) by a voltage source that is on the isolated or remote side of the isolation barrier and whose voltage output is provided to the powered components across the isolation barrier so as to maintain electrical isolation between the powered components and the output and thereby avoid unnecessary loading of the conductor.
摘要翻译：一种用于确定电导体（例如电话线（TIP / RING））中是否存在电流的微创检测电路（10），而不明显地加载导体。负载（R1）与导体串联放置，当电流流过其中时产生电压降。通过供电部件（18）检测电压降，所述供电部件（18）将跨越电绝缘屏障（22）的信号提供给电隔离的输出（26）。有源部件通过位于隔离屏障的隔离或远端侧的电压源（通过30）供电，并且其电压输出通过隔离屏障提供给有源部件，以便保持电源部件之间的电气隔离和输出，从而避免不必要的导体加载。

55. 发明公开

EP0740880A1 A METHOD FOR OFF-HOOK DETECTION DURING RINGING AND THE USE OF A SUBSCRIBER LINE INTERFACE CIRCUIT FOR OFF-HOOK DETECTION DURING RINGING 失效
标题翻译：捕获振铃和的用户线接口电路，用于检测在使用过程中阻断自由的方法时，不要挂，而振铃
公开(公告)号：EP0740880A1
公开(公告)日：1996-11-06
申请号：EP95907567.0
申请日：1995-01-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON
发明人： RANDAHL, Torbjörn
IPC分类号： H04M3 , H04M19 , H04Q3
CPC分类号： H04M3/2272 , H04M19/026
摘要： A method for off-hook detection at a subscriber line interface circuit upon the occurence of a ringing signal which preferably lacks a direct current component, as well as the use of a subscriber line interface circuit for the performing of said method, comprising the steps of generating a signal which is a function of the line current (il) through the subscriber line, measuring the time (Δt) the signal exceeds a first reference value (Vth), which represents a predetermined current value, comparing the measured time (Δt) with a predetermined time value and indicating off-hook in a processor in dependence of the comparison.

56. 发明公开

EP0622937A3 A method of rapidly assessing damage to outside loop plant 失效
标题翻译：一种用于向外部线路损坏的快速评估过程。
公开(公告)号：EP0622937A3
公开(公告)日：1995-06-14
申请号：EP94302582.5
申请日：1994-04-13
申请人： AT&T Corp.
发明人： Bushnell, William Jackson
IPC分类号： H04M3/30
CPC分类号： H04M3/30 , H04M3/22 , H04M3/2272 , H04M3/36
摘要： From time-to-time, the telephone outside loop plant is severely damaged as a result of some catastrophe, such as a hurricane. To facilitate the repair and identification of such damage, a facility is provided which rapidly assesses and outputs to a terminal the extent of such damage. The rapid assessment is made possible by taking advantage of information that may be obtained from a number of different sources, in which the extent of the damage may be determined from such information.

57. 发明公开

EP0622937A2 A method of rapidly assessing damage to outside loop plant 失效
标题翻译： Verfahren zur schnellen Beurteilung vonSchäden一个外部的Leitungen。
公开(公告)号：EP0622937A2
公开(公告)日：1994-11-02
申请号：EP94302582.5
申请日：1994-04-13
申请人： AT&T Corp.
发明人： Bushnell, William Jackson
IPC分类号： H04M3/30
CPC分类号： H04M3/30 , H04M3/22 , H04M3/2272 , H04M3/36
摘要： From time-to-time, the telephone outside loop plant is severely damaged as a result of some catastrophe, such as a hurricane. To facilitate the repair and identification of such damage, a facility is provided which rapidly assesses and outputs to a terminal the extent of such damage. The rapid assessment is made possible by taking advantage of information that may be obtained from a number of different sources, in which the extent of the damage may be determined from such information.
摘要翻译：由于诸如飓风等灾难，电话外线厂房不时受到严重破坏。为了便于维修和识别这种损坏，提供了一种能够迅速评估并向终端输出这种损坏程度的设施。利用可能从多种不同来源获得的信息，从而可以从这些信息中确定损害的程度，从而实现快速评估。

58. 发明公开

EP0487197A3 Telephone answer supervision and service selection 失效
标题翻译：电话应答监督和服务选择
公开(公告)号：EP0487197A3
公开(公告)日：1993-11-24
申请号：EP91309078.3
申请日：1991-10-03
申请人： International Business Machines Corporation
发明人： Jolissaint, Charles H. , Kerlin, Gregg, William
IPC分类号： H04M3/50
CPC分类号： H04M3/5166 , H04M3/2272 , H04M3/46 , H04Q3/62
摘要： Apparatus and method for communicating a call answered event and other communication services selection information to a call originating device (telephone). Tone signalling technology (DTMF) is used to indicate call progress. DTMF signals are generated by the switching system or associated telephony equipment.

59. 发明公开

EP0489645A2 Voice level controller 失效
标题翻译： Sprachpegelsteuereinrichtung。
公开(公告)号：EP0489645A2
公开(公告)日：1992-06-10
申请号：EP91403269.3
申请日：1991-12-03
申请人： CANON KABUSHIKI KAISHA
发明人： Hirata, Osamu, c/o Canon Kabushiki Kaisha
IPC分类号： H04M11/06 , H03G3/00 , H04B3/02
CPC分类号： H03G3/3026 , H03G1/0088 , H03G3/001 , H04M1/253 , H04M3/2272 , H04M3/40 , H04M3/56 , H04M3/568 , H04Q11/0471 , H04Q2213/096 , H04Q2213/13034 , H04Q2213/1309 , H04Q2213/13096 , H04Q2213/13106 , H04Q2213/13176 , H04Q2213/13204 , H04Q2213/13209 , H04Q2213/13216 , H04Q2213/1322 , H04Q2213/13396 , H04Q2213/19
摘要： A voice level controller comprises a discriminator for determining whether speech is done through an analog line or not, and a control circuit (16) for controlling a speech level in accordance with the output of the discriminator.
摘要翻译：语音电平控制器包括用于确定语音是否通过模拟线路完成的鉴别器，以及用于根据鉴别器的输出来控制语音电平的控制电路。

60. 发明授权

EP0199865B1 Active impedance transformer-assisted line feed circuit with filtering function of supervision signals 失效
标题翻译：主动阻抗变压器辅助线路馈线与监控信号的过滤功能
公开(公告)号：EP0199865B1
公开(公告)日：1989-10-11
申请号：EP85303095.5
申请日：1985-05-01
申请人： NORTHERN TELECOM LIMITED
发明人： Rosenbaum, Stanley Daniel , Holy, Zdenek J.
IPC分类号： H04M19/02
CPC分类号： H04M3/2272 , H04M19/005 , H04M19/026

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