ES2120508T3 - Dispositivo de conmutacion para un canal de comunicaciones. - Google Patents
Dispositivo de conmutacion para un canal de comunicaciones.Info
- Publication number
- ES2120508T3 ES2120508T3 ES93914853T ES93914853T ES2120508T3 ES 2120508 T3 ES2120508 T3 ES 2120508T3 ES 93914853 T ES93914853 T ES 93914853T ES 93914853 T ES93914853 T ES 93914853T ES 2120508 T3 ES2120508 T3 ES 2120508T3
- Authority
- ES
- Spain
- Prior art keywords
- lines
- switching circuits
- switching
- voltage
- pct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
- H04M3/301—Circuit arrangements at the subscriber's side of the line
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current additionally responsive to some other abnormal electrical conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/18—Automatic or semi-automatic exchanges with means for reducing interference or noise; with means for reducing effects due to line faults with means for protecting lines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Selective Calling Equipment (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Electrophonic Musical Instruments (AREA)
- Time-Division Multiplex Systems (AREA)
- Measurement Of Current Or Voltage (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
UNA DISPOSICION DE CONMUTACION QUE PUEDE CONECTARSE EN UN CANAL DE COMUNICACIONES, QUE COMPRENDE UN PAR DE LINEAS, ENTRE CONJUNTOS DE EQUIPO TERMINAL, QUE COMPRENDE: (I) UN CIRCUITO (3) DETECTOR DE VENTANA DE VOLTAJE DE CORRIENTE CONTINUA, QUE ESTA CONECTADO ENTRE LINEAS Y QUE ES SENSIBLE AL VOLTAJE ENTRE LINEAS; Y (II) UNO O MAS CIRCUITOS (2, 4) DE CONMUTACION, CONECTADOS EN, O ENTRE, LAS LINEAS QUE PUEDEN ACTIVARSE POR EL CIRCUITO (3) DETECTOR DE VENTANA CUANDO, Y SOLAMENTE CUANDO, EL VOLTAJE ENTRE LAS LINEAS ESTE DENTRO DE UNA BANDA PREDETERMINADA; CON LO QUE EL, O CADA UNO, DE LOS CIRCUITOS DE CONMUTACION (2, 4) PUEDEN ACTIVARSE A DISTANCIA MEDIANTE UNA SEÑAL DE CORRIENTE CONTINUA SOBRE LA LINEA, INCLUYENDO LA DISPOSICION UN FILTRO DE PASO BAJO, ASOCIADO CON EL, O CADA UNO DE, LOS CIRCUITOS QUE TIENEN UNA FRECUENCIA CRITICA, QUE ES LO SUFICIENTEMENTE BAJA PARA EVITAR QUE EL CIRCUITO O CIRCUITOS DE CONMUTACION SE ACTIVEN POR UNA SEÑAL DE LLAMADA SOBRE EL CANAL.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB929213980A GB9213980D0 (en) | 1992-07-01 | 1992-07-01 | Switching arragement for a communications channel |
GB929221348A GB9221348D0 (en) | 1992-10-12 | 1992-10-12 | Switching arrangement for a communications channel |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2120508T3 true ES2120508T3 (es) | 1998-11-01 |
Family
ID=26301164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES93914853T Expired - Lifetime ES2120508T3 (es) | 1992-07-01 | 1993-06-30 | Dispositivo de conmutacion para un canal de comunicaciones. |
Country Status (21)
Country | Link |
---|---|
US (1) | US5652575A (es) |
EP (1) | EP0649585B1 (es) |
JP (1) | JPH07508376A (es) |
KR (1) | KR950702368A (es) |
CN (1) | CN1082283C (es) |
AT (1) | ATE170687T1 (es) |
AU (1) | AU678765B2 (es) |
BG (1) | BG99316A (es) |
BR (1) | BR9306660A (es) |
CA (1) | CA2139436A1 (es) |
CZ (1) | CZ334994A3 (es) |
DE (1) | DE69320819T2 (es) |
ES (1) | ES2120508T3 (es) |
FI (1) | FI110979B (es) |
HU (1) | HUT73112A (es) |
IL (1) | IL106193A (es) |
NO (1) | NO945099D0 (es) |
NZ (1) | NZ253749A (es) |
SK (1) | SK160694A3 (es) |
TW (1) | TW264598B (es) |
WO (1) | WO1994001961A1 (es) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9223770D0 (en) * | 1992-11-12 | 1992-12-23 | Raychem Ltd | Communication channel testing arrangement |
GB9403646D0 (en) * | 1994-02-25 | 1994-04-13 | Raychem Ltd | Switching device for telecommunications channel |
AU2451595A (en) * | 1994-05-17 | 1995-12-05 | British Telecommunications Public Limited Company | Customer line tester |
FR2754662B1 (fr) * | 1996-10-14 | 1998-12-04 | Henri Depaepe Sa | Terminal de telecommunications d'essais |
JP3580678B2 (ja) * | 1996-10-16 | 2004-10-27 | 沖電気工業株式会社 | オフフック信号およびダイヤルパルス発生回路、および該回路の駆動方法 |
WO1999053627A1 (en) | 1998-04-10 | 1999-10-21 | Chrimar Systems, Inc. Doing Business As Cms Technologies | System for communicating with electronic equipment on a network |
US6068508A (en) * | 1998-04-23 | 2000-05-30 | Lucent Technologies, Inc. | Connector assembly test block |
US6614881B1 (en) | 2000-10-17 | 2003-09-02 | Tyco Electronics Corporation | Remotely operable telecommunications conductor test circuit and method for using the same |
US7036144B2 (en) * | 2000-12-21 | 2006-04-25 | Jon Ryan Welcher | Selective prevention of undesired communications within a computer network |
US20030112572A1 (en) * | 2001-12-19 | 2003-06-19 | Knigge Vincent L. | Frequency selective transient voltage protector |
US6983038B2 (en) * | 2002-10-29 | 2006-01-03 | Bellsouth Intellectual Property Corporation | Maintenance termination unit |
US7200206B1 (en) * | 2003-03-27 | 2007-04-03 | At&T Corp. | Method and apparatus for testing a subscriber loop-based service |
US6862162B2 (en) * | 2003-04-23 | 2005-03-01 | Teccor Electronics, Lp | Thyristor circuit providing overcurrent protection to a low impedance load |
DE102004047871A1 (de) * | 2004-10-01 | 2006-04-06 | Deutsche Thomson-Brandt Gmbh | Signal-Eingangsschaltung |
US8340252B2 (en) * | 2008-06-27 | 2012-12-25 | Early Rescue Solutions, LLC | Surveillance device detection with countermeasures |
JP5281556B2 (ja) * | 2009-12-07 | 2013-09-04 | セイコーインスツル株式会社 | 物理量センサ |
US11121547B2 (en) | 2019-04-02 | 2021-09-14 | Analog Devices International Unlimited Company | Device and method for overvoltage protection |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3725613A (en) * | 1971-02-25 | 1973-04-03 | Rochester Tel Corp | Apparatus for protecting and testing telephone network |
US4143250A (en) * | 1976-12-13 | 1979-03-06 | Tii Corporation | Telephone isolation system |
US4169220A (en) * | 1978-10-02 | 1979-09-25 | Fields Gary C | Telephone instrument connection block with remotely actuated line test |
US4489221A (en) * | 1982-08-23 | 1984-12-18 | Micro Computer Systems, Inc. | Telephone line/subscriber equipment disconnect apparatus |
GB2149274A (en) * | 1983-10-31 | 1985-06-05 | Teradyne Inc | Testing subscriber lines |
US4529847A (en) * | 1983-12-12 | 1985-07-16 | At&T Bell Laboratories | Maintenance termination unit |
US4582960A (en) * | 1984-05-17 | 1986-04-15 | Porta Systems Corp. | Subscriber network interface device |
US4669111A (en) * | 1984-07-20 | 1987-05-26 | Om Ahuja | Polarity ring director |
US4653084A (en) * | 1984-07-20 | 1987-03-24 | Om Ahuja | Remote actuated switch |
DE3513598A1 (de) * | 1985-04-16 | 1986-10-16 | Neumann Elektronik GmbH, 4330 Mülheim | Einrichtung zur pruefung einer fernmeldeleitung zwischen einer vermittlungsstelle und einem teilnehmeranschluss von der vermittlungsstelle aus |
US4626632A (en) * | 1985-07-25 | 1986-12-02 | Porta Systems Corp. | Maintenance termination unit |
GB2181625A (en) * | 1985-10-15 | 1987-04-23 | Teradyne Inc | Apparatus for connecting and disconnecting telephone equipment |
US4807277A (en) * | 1987-05-15 | 1989-02-21 | Keptel, Inc. | Remotely activated switching apparatus |
CA1260171A (en) * | 1987-05-15 | 1989-09-26 | Reinhard W. Rosch | Protection arrangement for a telephone subscriber line interface circuit |
US4875040A (en) * | 1988-05-06 | 1989-10-17 | Dzjuban Vitaly S | Device for remote control of electrical apparatus |
GB9027111D0 (en) * | 1990-12-13 | 1991-02-06 | Raychem Ltd | Circuit protection device |
KR930702811A (ko) * | 1990-10-12 | 1993-09-09 | 죤 에버레트 벤슨 | 회로 보호 장치 및 유니트 |
GB9114717D0 (en) * | 1991-07-08 | 1991-08-28 | Raychem Ltd | Circuit protection arrangement |
GB9200332D0 (en) * | 1992-01-08 | 1992-02-26 | Plessey Telecomm | Termination unit with maintenance facility |
US5353327A (en) * | 1992-05-04 | 1994-10-04 | At&T Bell Laboratories | Maintenance termination unit |
US5357556A (en) * | 1992-08-10 | 1994-10-18 | Pacific Bell | System and method for telephone network testing |
-
1993
- 1993-06-25 TW TW082105068A patent/TW264598B/zh active
- 1993-06-30 NZ NZ253749A patent/NZ253749A/en not_active IP Right Cessation
- 1993-06-30 DE DE69320819T patent/DE69320819T2/de not_active Expired - Fee Related
- 1993-06-30 IL IL10619393A patent/IL106193A/en not_active IP Right Cessation
- 1993-06-30 JP JP5516876A patent/JPH07508376A/ja active Pending
- 1993-06-30 HU HU9403807A patent/HUT73112A/hu unknown
- 1993-06-30 AU AU45075/93A patent/AU678765B2/en not_active Ceased
- 1993-06-30 BR BR9306660A patent/BR9306660A/pt not_active IP Right Cessation
- 1993-06-30 EP EP93914853A patent/EP0649585B1/en not_active Expired - Lifetime
- 1993-06-30 CZ CZ943349A patent/CZ334994A3/cs unknown
- 1993-06-30 ES ES93914853T patent/ES2120508T3/es not_active Expired - Lifetime
- 1993-06-30 US US08/360,756 patent/US5652575A/en not_active Expired - Lifetime
- 1993-06-30 WO PCT/GB1993/001376 patent/WO1994001961A1/en active IP Right Grant
- 1993-06-30 CA CA002139436A patent/CA2139436A1/en not_active Abandoned
- 1993-06-30 SK SK1606-94A patent/SK160694A3/sk unknown
- 1993-06-30 AT AT93914853T patent/ATE170687T1/de not_active IP Right Cessation
- 1993-07-01 CN CN93116254A patent/CN1082283C/zh not_active Expired - Fee Related
-
1994
- 1994-12-29 BG BG99316A patent/BG99316A/xx unknown
- 1994-12-30 NO NO945099A patent/NO945099D0/no not_active Application Discontinuation
- 1994-12-30 FI FI946188A patent/FI110979B/fi active
- 1994-12-31 KR KR1019940704889A patent/KR950702368A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
AU678765B2 (en) | 1997-06-12 |
DE69320819D1 (de) | 1998-10-08 |
TW264598B (es) | 1995-12-01 |
EP0649585B1 (en) | 1998-09-02 |
BG99316A (en) | 1995-10-31 |
CN1085364A (zh) | 1994-04-13 |
NZ253749A (en) | 1996-03-26 |
FI110979B (fi) | 2003-04-30 |
FI946188A0 (fi) | 1994-12-30 |
FI946188A (fi) | 1994-12-30 |
NO945099L (no) | 1994-12-30 |
IL106193A0 (en) | 1993-10-20 |
KR950702368A (ko) | 1995-06-19 |
SK160694A3 (en) | 1995-09-13 |
US5652575A (en) | 1997-07-29 |
HUT73112A (en) | 1996-06-28 |
AU4507593A (en) | 1994-01-31 |
JPH07508376A (ja) | 1995-09-14 |
DE69320819T2 (de) | 1999-06-10 |
IL106193A (en) | 1996-09-12 |
CN1082283C (zh) | 2002-04-03 |
BR9306660A (pt) | 1998-12-08 |
CZ334994A3 (en) | 1995-08-16 |
CA2139436A1 (en) | 1994-01-20 |
WO1994001961A1 (en) | 1994-01-20 |
HU9403807D0 (en) | 1995-02-28 |
NO945099D0 (no) | 1994-12-30 |
EP0649585A1 (en) | 1995-04-26 |
ATE170687T1 (de) | 1998-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2120508T3 (es) | Dispositivo de conmutacion para un canal de comunicaciones. | |
TW232107B (es) | ||
MX9307077A (es) | Configuracion de prueba de canal de comunicaciones. | |
WO2004062171A3 (en) | Equivalent working length determinative system for digital subscriber line circuits | |
US3919487A (en) | Telephone instrument disconnect circuit | |
US3626101A (en) | Loop extender for subscribers connected to a central office by abnormally long telephone lines | |
MY103396A (en) | Apparatus for connecting and disconnecting a ringing- signal to a subscriber | |
US4081616A (en) | Method of and apparatus for eliminating the side tone of a telephone station | |
CA1240084A (en) | Multi-party line emergency access device | |
EP0252259B1 (de) | Einrichtung zur Speisung eines in einem Fernsprechsystem teilnehmerseitig angeordneten Gerätes | |
ATE527813T1 (de) | Tiefpassfiltervorrichtung mit isolation und bypass-schaltung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
Ref document number: 649585 Country of ref document: ES |