公开(公告)号：EP0913980B1

公开(公告)日：2003-03-26

申请号：EP98310260.9

申请日：1995-03-08

Applicant: Nortel Networks Limited

Inventor： Pistilli, Antonio

IPC: H04M3/18 ,  H02H9/04

CPC classification number: H04M3/18 ,  H02H9/048 ,  H04M2201/80

公开(公告)号：EP0571109A3

公开(公告)日：1999-11-03

申请号：EP93303518.0

申请日：1993-05-06

Applicant: AT&T Corp.

Inventor： Elder, Joseph Marcus, Jr.

IPC: H04M3/18 ,  H04M3/00

CPC classification number: H04M3/18 ,  H04M2201/80

Abstract: By opening switches (14,15) coupling a subscriber loop to circuits in a SLIC (10) when an overvoltage condition occurs, the SLIC is protected from damage. The overvoltage is detected by a overvoltage protector (16) behind the switches. The overvoltage condition is latched (26) and the common control is notified of the condition. The common control may then clear the latch, reclosing the switches. If the overvoltage still exists, the switches are re-opened and maintenance personnel is notified of the fault.

公开(公告)号：EP0913980A2

公开(公告)日：1999-05-06

申请号：EP98310260.9

申请日：1995-03-08

Applicant: NORTHERN TELECOM LIMITED

Inventor： Pistilli, Antonio

IPC: H04M3/18

CPC classification number: H04M3/18 ,  H02H9/048 ,  H04M2201/80

Abstract: A telephone line interface circuit with d.c. amplifiers (12) coupled to tip and ring paths is protected against transient voltages by a crowbar-type protection device (52) coupled via a diode bridge (28, 30) to the tip and ring paths, positive and negative terminals of the diode bridge being connected respectively to ground and via a diode (54) to a negative supply voltage line for the amplifiers. The diode prevents discharge of a capacitor (26), coupled between the negative supply voltage line and ground, through the protection device when it conducts. A locked up state, in which the amplifiers maintain holding current to the protection device after a transient voltage, is avoided by further diodes (56, 58) coupled from the negative terminal of the diode bridge to inputs of the amplifiers, or by controlling a current limiter (34) to interrupt current to the capacitor when the diode is reverse biased, so that the capacitor discharges. The current limiter includes a resistance (38) and inductance (40) in series for sensing current, whereby initial charging current for the capacitor is reduced on closing of relay contacts (K1, K2) in series with the current limiter, and relay contact deterioration is avoided.

Abstract translation: 具有直流电的电话线接口电路 耦合到尖端和环路的放大器（12）通过经由二极管桥（28,30）耦合到尖端和环路径的脉冲型保护装置（52）来保护以防止瞬态电压，二极管桥的正极和负极端子 分别连接到地和通过二极管（54）连接到用于放大器的负电源电压线。 当二极管导通时，二极管防止通过保护装置在负电源电压线和地之间耦合的电容器（26）的放电。 通过从二极管电桥的负端子耦合到放大器的输入的另外的二极管（56,58）避免放大器在瞬态电压之后保持对保护装置的保持电流的锁定状态，或者通过控制 限流器（34）在二极管反向偏置时中断电容器的电流，使电容放电。 电流限制器包括用于感测电流的电阻（38）和电感（40），由此在与限流器串联的继电器触点（K1，K2）闭合时电容器的初始充电电流减小，并且继电器触点劣化 避免了。

公开(公告)号：EP0784896A1

公开(公告)日：1997-07-23

申请号：EP95910378.0

申请日：1995-03-08

Applicant: NORTHERN TELECOM LIMITED

Inventor： PISTILLI, Antonio

IPC: H02H9 ,  H04M3 ,  H04Q3

CPC classification number: H04M3/18 ,  H02H9/048 ,  H04M2201/80

Abstract: A telephone line interface circuit with d.c. amplifiers (12) coupled to tip and ring paths is protected against transient voltages by a crowbar-type protection device (52) coupled via a diode bridge (28, 30) to the tip and ring paths, positive and negative terminals of the diode bridge being connected respectively to ground and via a diode (54) to a negative supply voltage line for the amplifiers. The diode prevents discharge of a capacitor (26), coupled between the negative supply voltage line and ground, through the protection device when it conducts. A locked up state, in which the amplifiers maintain holding current to the protection device after a transient voltage, is avoided by further diodes (56, 58) coupled from the negative terminal of the diode bridge to inputs of the amplifiers, or by controlling a current limiter (34) to interrupt current to the capacitor when the diode is reverse biased, so that the capacitor discharges. The current limiter includes a resistance (38) and inductance (40) in series for sensing current, whereby initial charging current for the capacitor is reduced on closing of relay contacts (K1, K2) in series with the current limiter, and relay contact deterioration is avoided.

公开(公告)号：PE01812006A1

公开(公告)日：2006-04-10

申请号：PE0001112005

申请日：2005-01-28

Applicant: TYCO ELECTRONICS ARGENTINA S A

Inventor： GUTNISKY WALTER GUSTAVO

IPC: H02H3/06 ,  H02H3/20 ,  H02H9/04 ,  H04M3/18

CPC classification number: H02H3/202 ,  H02H3/066 ,  H04M3/18 ,  H04M2201/80

Abstract: DONDE EL DISPOSITIVO COMPRENDE: a) UN MEDIO DETECTOR DE PERTURBACIONES ELECTRICAS PARA DETECTAR LA TENSION DE LA SENAL EN LA LINEA DE TRANSMISION, Y PARA PRODUCIR UNA SENAL DE SALIDA DE FALLA COMO RESPUESTA CUANDO LA TENSION DETECTADA EXCEDE UN UMBRAL PREDETERMINADO DE DISPARO O ES DE POLARIDAD CONTRARIA A DICHA POLARIDAD NOMINAL; b) UN MEDIO DESACOPLADOR PARA DESCONECTAR LA INSTALACION DE LA LINEA COMO RESPUESTA A LA SENAL DE FALLA, EL CUAL CONTIENE UN RELEVADOR QUE CONECTA LA INSTALACION A LA LINEA; Y, c) UN MEDIO REPOSITOR PARA RECONECTAR DICHA INSTALACION A LA LINEA COMO RESPUESTA A LA AUSENCIA DE DICHA SENAL DE FALLA DURANTE UN INTERVALO DE TIEMPO PREDETERMINADO, EL CUAL COMPRENDE UN MEDIO DETECTOR DE SENAL NORMAL. LA LINEA ES TELEFONICA O DE TRANSMISION DE DATOS, Y LA CONEXION ELECTRICA A TIERRA PRESENTA UNA RESISTENCIA ENTRE 6 Y 600 OHMS. EL METODO INCLUYE: i) PROPORCIONAR UNA CONEXION ELECTRICA A TIERRA PARA DEFINIR UNA TENSION DE REFERENCIA; ii) SEGUIR LA TENSION EN LA LINEA RELATIVA A DICHA TENSION; iii) DETECTAR UNA CONDICION DE PERTURBACION EN LA TENSION, COMO QUE LA MAGNITUD DE LA TENSION SEGUIDA EXCEDE UN UMBRAL DE DISPARO PREDETERMINADO O QUE LA POLARIDAD DE LA TENSION SEGUIDA SE HA INVERTIDO RESPECTO DE LA POLARIDAD NOMINAL PREDETERMINADA DE LA LINEA; iv) EVITAR QUE LA CONDICION DE PERTURBACION DETECTADA AVANCE HACIA LA INSTALACION; Y, v) RECONECTAR LA INSTALACION A LA LINEA RECIEN LUEGO DE COMPROBAR LA RESTAURACION DE LA TENSION

公开(公告)号：EP3240271A4

公开(公告)日：2018-02-07

申请号：EP15871664

申请日：2015-07-07

Applicant: ZTE CORP

Inventor： SHEN SHAOWU

IPC: H04M1/725 ,  G01R31/02

CPC classification number: H04M1/0202 ,  G01R31/02 ,  G01R31/025 ,  G01R31/026 ,  H04M1/24 ,  H04M1/725 ,  H04M2201/80

Abstract: At least some embodiments of disclosure include a method and device for grounding adjustment. The method includes: acquiring a grounding parameter of a port to be detected of a terminal, wherein the grounding parameter is reflective of a grounding state of the port to be detected; when the grounding parameter exceeds a predetermined threshold, determining that the grounding state of the port to be detected does not meet a preset requirement; and adjusting the port to be detected not meeting the preset requirement according to a reason why the grounding state does not meet the preset requirement. According to the method and device for the grounding adjustment, a problem that a grounding state of the terminal cannot be detected or adjusted is solved, and thereby the intelligent grounding detection and calibration optimizing process of the terminal are achieved, and faults such as poor communication quality, high heat and electrostatic discharge caused by the grounding problem are avoided.

公开(公告)号：EP2993881B1

公开(公告)日：2017-08-16

申请号：EP15184241.6

申请日：2015-09-08

Applicant: Nexans

Inventor： MIART, Freddy ,  DEVAUX, Julien

IPC: H04M11/06 ,  H04M3/30 ,  H04M1/78 ,  H04Q1/02 ,  H04M1/02

CPC classification number: H04M11/062 ,  H04M1/0293 ,  H04M3/30 ,  H04M2201/80 ,  H04Q1/028

公开(公告)号：EP2993881A1

公开(公告)日：2016-03-09

申请号：EP15184241.6

申请日：2015-09-08

Applicant: Nexans

Inventor： MIART, Freddy ,  DEVAUX, Julien

IPC: H04M11/06 ,  H04M3/30 ,  H04M1/78 ,  H04Q1/02 ,  H04M1/02

CPC classification number: H04M11/062 ,  H04M1/0293 ,  H04M3/30 ,  H04M2201/80 ,  H04Q1/028

Abstract: L'invention a pour objet un dispositif de terminaison intérieur (1), comprenant :
- un premier module (5) assurant une fonction de connexion d'une paire de conducteurs d'un abonné à une paire de conducteurs d'un opérateur de télécommunication et une fonction de test permettant de localiser un défaut sur la ligne téléphonique de l'abonné, et
- un deuxième module (3) assurant une fonction de filtre ADSL ou une fonction de division de signal,
le dispositif (1) étant caractérisé en ce que le premier module (5) et le deuxième module (3) sont distincts et en ce que le deuxième module (3) est recouvert de rails (10) aptes à se fixer sur un support (4) du premier module (5).

公开(公告)号：EP1709786A1

公开(公告)日：2006-10-11

申请号：EP05702013.3

申请日：2005-01-25

Applicant: Tyco Electronics Argentina Sa

Inventor： GUTNISKY, Walter, Gustavo

IPC: H04M3/18

CPC classification number: H02H3/202 ,  H02H3/066 ,  H04M3/18 ,  H04M2201/80

Abstract: A protection device (10) uses a single-coil (15) latch relay (11) to decouple a telephone and/or data installation from DC transmission lines (12) in the event of a line AC/overvoltage disturbance. A trip circuit (19) and a reset circuit (21) are respectively connected to normally-closed (OUTA1, OUTB1) and normally-open (OUTA2, OUTB2) terminals of the relay to monitor the line voltage using an earth connection as a reference voltage, supplying respectively trip (23) or reset (25) currents to the coil for switching the relay. Hence, the protection device may operatively tolerate an inexpensive high-resistance earth connection. The reset current is supplied to the relay coil by a transistor circuit (Q1, Q2) only after the disturbance has ceased, the nominal transmission voltage has been restored and the line has stabilized for some seconds.

公开(公告)号：EP1410611A1

公开(公告)日：2004-04-21

申请号：EP00948802.4

申请日：2000-07-20

Applicant: Nortel Networks Limited

Inventor： PISTILLI, Anthony

IPC: H04M3/18 ,  H02H9/00

CPC classification number: H04M3/18 ,  H02H9/048 ,  H04M2201/80

Abstract: A surge reset circuit (200) used to automatically reset a surge protection circuit within a telephone line interface circuit. A sensor (300) (e.g., a zenering device) advantageously generates a voltage level representing current draining out of the transient voltage suppression portion of the surge protection circuit after a transient energy surge. If the current is draining, which may indicate a potential lockup situation, feedback circuitry (305) generates a reset feedback signal that is provided to a cutoff device (330). The cutoff device, in response to receiving the feedback signal, disables a current limiter portion of the surge protection circuit to reduce the current draining from the transient voltage suppression portion. As the current level is reduced, the transient voltage suppression portion will reset when the current drops below a threshold value or is substantially eliminated. As a result, the feedback circuitry removes the reset feedback signal from the cutoff device to re-enable the current limiter (34).