BG99626A - Device for communication channel testing - Google Patents
Device for communication channel testingInfo
- Publication number
- BG99626A BG99626A BG99626A BG9962695A BG99626A BG 99626 A BG99626 A BG 99626A BG 99626 A BG99626 A BG 99626A BG 9962695 A BG9962695 A BG 9962695A BG 99626 A BG99626 A BG 99626A
- Authority
- BG
- Bulgaria
- Prior art keywords
- switches
- lines
- series
- testing
- control circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
-
- 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
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
- H03K17/6874—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor in a symmetrical configuration
-
- 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
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/14—Delay circuits; Timers
Landscapes
- Signal Processing (AREA)
- Engineering & Computer Science (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Time-Division Multiplex Systems (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Mobile Radio Communication Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Radio Transmission System (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Telephonic Communication Services (AREA)
- Small-Scale Networks (AREA)
- Dc Digital Transmission (AREA)
- Electronic Switches (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB929223770A GB9223770D0 (en) | 1992-11-12 | 1992-11-12 | Communication channel testing arrangement |
PCT/GB1993/002312 WO1994011948A1 (en) | 1992-11-12 | 1993-11-10 | Communications channel testing arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
BG99626A true BG99626A (en) | 1996-04-30 |
Family
ID=10724998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BG99626A BG99626A (en) | 1992-11-12 | 1995-05-11 | Device for communication channel testing |
Country Status (24)
Country | Link |
---|---|
US (1) | US5768341A (fi) |
EP (1) | EP0669054B1 (fi) |
JP (1) | JPH08503106A (fi) |
KR (1) | KR950704856A (fi) |
CN (1) | CN1062998C (fi) |
AT (1) | ATE163332T1 (fi) |
AU (1) | AU5429094A (fi) |
BG (1) | BG99626A (fi) |
BR (1) | BR9307422A (fi) |
CA (1) | CA2148363A1 (fi) |
CZ (1) | CZ124795A3 (fi) |
DE (1) | DE69317055T2 (fi) |
FI (1) | FI952318A (fi) |
GB (1) | GB9223770D0 (fi) |
HU (1) | HUT73625A (fi) |
IL (1) | IL107575A (fi) |
MX (1) | MX9307077A (fi) |
MY (1) | MY131794A (fi) |
NO (1) | NO951863D0 (fi) |
PL (1) | PL172143B1 (fi) |
SK (1) | SK62795A3 (fi) |
TR (1) | TR28243A (fi) |
WO (1) | WO1994011948A1 (fi) |
ZA (1) | ZA938468B (fi) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2722599B1 (fr) * | 1994-07-13 | 1996-08-14 | Amphitech Sarl | Procede pour surveiller le bon etat de fonctionnement d'une installation permettant d'echanger des informations |
US5848127A (en) * | 1996-04-01 | 1998-12-08 | Hubbell Incorporated | Two-wire channel unit with loopback test capability |
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 |
US5987060A (en) * | 1997-06-13 | 1999-11-16 | Innova Corporation | System and method of radio communications with an up-down digital signal link |
US6205201B1 (en) * | 1997-06-16 | 2001-03-20 | Ico Corporation | Telephone line testing device |
US6278769B1 (en) * | 1998-11-25 | 2001-08-21 | Westell Technologies, Inc. | Signaling method for invoking a test mode in a network interface unit |
US6201853B1 (en) * | 1999-07-13 | 2001-03-13 | Communications Manufacturing Company | Telephone technician's remote assist apparatus and method |
US6671149B1 (en) * | 2000-09-28 | 2003-12-30 | Turnstone Systems, Inc. | Systems and methods for protecting vulnerable micro electro-mechanical system (MEMS) and electronic relay devices |
US6683768B2 (en) * | 2000-09-28 | 2004-01-27 | Turnstone Systems, Inc. | Circuit topology for protecting vulnerable micro electro-mechanical system (MEMS) and electronic relay devices |
US6614881B1 (en) | 2000-10-17 | 2003-09-02 | Tyco Electronics Corporation | Remotely operable telecommunications conductor test circuit and method for using the same |
EP1271166B1 (en) * | 2002-04-06 | 2004-01-28 | Agilent Technologies, Inc. (a Delaware corporation) | Electrical system for testing the channels of a communication system |
US7065180B2 (en) * | 2003-08-04 | 2006-06-20 | Spirent Communications Of Rockville, Inc. | System and method for hitless monitoring access of a communications circuit |
US6922464B2 (en) * | 2003-08-04 | 2005-07-26 | Spirent Communications Of Rockville, Inc. | System and method for hitless monitoring access of a communications circuit |
JP2007116758A (ja) * | 2005-10-18 | 2007-05-10 | Denso Corp | 車両用発電制御装置 |
US8515018B2 (en) * | 2008-04-22 | 2013-08-20 | Actelis Networks Inc. | Automatic telephone line loop around system and method |
WO2015022017A1 (en) * | 2013-08-13 | 2015-02-19 | Hewlett-Packard Development Company, L.P. | Protection of communication lines against short circuits |
WO2016152375A1 (ja) * | 2015-03-25 | 2016-09-29 | 株式会社日立製作所 | 超音波探触子、超音波診断装置、および、超音波探触子のテスト方法 |
US11121547B2 (en) | 2019-04-02 | 2021-09-14 | Analog Devices International Unlimited Company | Device and method for overvoltage protection |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4169220A (en) * | 1978-10-02 | 1979-09-25 | Fields Gary C | Telephone instrument connection block with remotely actuated line test |
GB2149274A (en) * | 1983-10-31 | 1985-06-05 | Teradyne Inc | Testing subscriber lines |
US4669111A (en) * | 1984-07-20 | 1987-05-26 | Om Ahuja | Polarity ring director |
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 |
US4947427A (en) * | 1987-05-15 | 1990-08-07 | Northern Telecom Limited | Protection arrangement for a telephone subscriber line interface circuit |
GB8802434D0 (en) * | 1988-02-03 | 1988-03-02 | British Telecomm | Protector device |
US5146384A (en) * | 1989-04-28 | 1992-09-08 | Northern Telecom Limited | Automatically resetting protection arrangement for a telephone subscriber line interface circuit |
GB9027111D0 (en) * | 1990-12-13 | 1991-02-06 | Raychem Ltd | Circuit protection device |
GB9114717D0 (en) * | 1991-07-08 | 1991-08-28 | Raychem Ltd | Circuit protection arrangement |
TW264598B (fi) * | 1992-07-01 | 1995-12-01 | Ray Chem Ltd | |
GB9213992D0 (en) * | 1992-07-01 | 1992-08-12 | Raychem Ltd | Remotely actuated switch and protection circuit |
GB9223773D0 (en) * | 1992-11-12 | 1992-12-23 | Raychem Ltd | Switching arrangement |
US5550894A (en) * | 1992-11-20 | 1996-08-27 | Atlas Telecom International Ltd. | Device for sequentially altering a communication line for remote diagnostic checks |
US5617466A (en) * | 1995-03-20 | 1997-04-01 | Harris Corporation | Mechanism for controllably enabling test set to assert off-hook condition on telephone line in dependence upon detection of prescribed voltage level and absence of data traffic |
-
1992
- 1992-11-12 GB GB929223770A patent/GB9223770D0/en active Pending
-
1993
- 1993-11-09 MY MYPI93002348A patent/MY131794A/en unknown
- 1993-11-10 TR TR01030/93A patent/TR28243A/xx unknown
- 1993-11-10 JP JP6506647A patent/JPH08503106A/ja not_active Ceased
- 1993-11-10 DE DE69317055T patent/DE69317055T2/de not_active Expired - Fee Related
- 1993-11-10 CA CA002148363A patent/CA2148363A1/en not_active Abandoned
- 1993-11-10 AU AU54290/94A patent/AU5429094A/en not_active Abandoned
- 1993-11-10 AT AT93924735T patent/ATE163332T1/de not_active IP Right Cessation
- 1993-11-10 KR KR1019950701871A patent/KR950704856A/ko not_active Application Discontinuation
- 1993-11-10 PL PL93308765A patent/PL172143B1/pl unknown
- 1993-11-10 SK SK627-95A patent/SK62795A3/sk unknown
- 1993-11-10 CZ CZ951247A patent/CZ124795A3/cs unknown
- 1993-11-10 HU HU9501358A patent/HUT73625A/hu unknown
- 1993-11-10 US US08/436,318 patent/US5768341A/en not_active Expired - Lifetime
- 1993-11-10 BR BR9307422-0A patent/BR9307422A/pt not_active Application Discontinuation
- 1993-11-10 WO PCT/GB1993/002312 patent/WO1994011948A1/en active IP Right Grant
- 1993-11-10 EP EP93924735A patent/EP0669054B1/en not_active Expired - Lifetime
- 1993-11-11 IL IL10757593A patent/IL107575A/en not_active IP Right Cessation
- 1993-11-12 MX MX9307077A patent/MX9307077A/es not_active IP Right Cessation
- 1993-11-12 ZA ZA938468A patent/ZA938468B/xx unknown
- 1993-11-12 CN CN93112766A patent/CN1062998C/zh not_active Expired - Fee Related
-
1995
- 1995-05-11 NO NO951863A patent/NO951863D0/no not_active Application Discontinuation
- 1995-05-11 BG BG99626A patent/BG99626A/xx unknown
- 1995-05-12 FI FI952318A patent/FI952318A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
CA2148363A1 (en) | 1994-05-26 |
WO1994011948A1 (en) | 1994-05-26 |
EP0669054A1 (en) | 1995-08-30 |
MY131794A (en) | 2007-09-28 |
CZ124795A3 (en) | 1996-05-15 |
BR9307422A (pt) | 1999-08-31 |
IL107575A0 (en) | 1994-02-27 |
ZA938468B (en) | 1994-06-20 |
HU9501358D0 (en) | 1995-06-28 |
FI952318A0 (fi) | 1995-05-12 |
DE69317055T2 (de) | 1998-10-08 |
IL107575A (en) | 1996-10-16 |
US5768341A (en) | 1998-06-16 |
AU5429094A (en) | 1994-06-08 |
NO951863L (no) | 1995-05-11 |
FI952318A (fi) | 1995-05-12 |
PL308765A1 (en) | 1995-08-21 |
CN1092920A (zh) | 1994-09-28 |
CN1062998C (zh) | 2001-03-07 |
ATE163332T1 (de) | 1998-03-15 |
NO951863D0 (no) | 1995-05-11 |
SK62795A3 (en) | 1996-11-06 |
PL172143B1 (pl) | 1997-08-29 |
DE69317055D1 (de) | 1998-03-26 |
EP0669054B1 (en) | 1998-02-18 |
HUT73625A (en) | 1996-08-28 |
GB9223770D0 (en) | 1992-12-23 |
KR950704856A (ko) | 1995-11-20 |
TR28243A (tr) | 1996-03-28 |
JPH08503106A (ja) | 1996-04-02 |
MX9307077A (es) | 1994-05-31 |
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