WO2002068969A3 - Detecting a bridge tap or end-of-line of a telephone line using time-domain reflectometry - Google Patents
Detecting a bridge tap or end-of-line of a telephone line using time-domain reflectometry Download PDFInfo
- Publication number
- WO2002068969A3 WO2002068969A3 PCT/US2002/004443 US0204443W WO02068969A3 WO 2002068969 A3 WO2002068969 A3 WO 2002068969A3 US 0204443 W US0204443 W US 0204443W WO 02068969 A3 WO02068969 A3 WO 02068969A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- line
- telephone line
- time
- detecting
- domain reflectometry
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
Abstract
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002253954A AU2002253954A1 (en) | 2001-02-23 | 2002-02-14 | Detecting a bridge tap or end-of-line of a telephone line using time-domain reflectometry |
DE60214183T DE60214183D1 (en) | 2001-02-23 | 2002-02-14 | DETECTING A BRIDGE RETRACT OR TELEPHONE OF A TELEPHONE LINE THROUGH TIME RANGE REFLECTOMETRY |
EP02723156A EP1402709B1 (en) | 2001-02-23 | 2002-02-14 | Detecting a bridge tap or end-of-line of a telephone line using time-domain reflectometry |
CA002438240A CA2438240C (en) | 2001-02-23 | 2002-02-14 | Detecting a bridge tap or end-of-line of a telephone line using time-domain reflectometry |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/792,726 US6574311B1 (en) | 2001-02-23 | 2001-02-23 | Apparatus and method for detecting a bridged tap and/or an end-of-line of a conventional telephone line using delay-line time-domain reflectometry |
US09/792,726 | 2001-02-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2002068969A2 WO2002068969A2 (en) | 2002-09-06 |
WO2002068969A3 true WO2002068969A3 (en) | 2003-03-13 |
WO2002068969A8 WO2002068969A8 (en) | 2003-12-24 |
Family
ID=25157866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/004443 WO2002068969A2 (en) | 2001-02-23 | 2002-02-14 | Detecting a bridge tap or end-of-line of a telephone line using time-domain reflectometry |
Country Status (8)
Country | Link |
---|---|
US (1) | US6574311B1 (en) |
EP (1) | EP1402709B1 (en) |
AT (1) | ATE337675T1 (en) |
AU (1) | AU2002253954A1 (en) |
CA (1) | CA2438240C (en) |
DE (1) | DE60214183D1 (en) |
TW (1) | TW561265B (en) |
WO (1) | WO2002068969A2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6959037B2 (en) * | 2003-09-15 | 2005-10-25 | Spirent Communications Of Rockville, Inc. | System and method for locating and determining discontinuities and estimating loop loss in a communications medium using frequency domain correlation |
GB2489919B (en) * | 2011-04-05 | 2018-02-14 | Intel Corp | Filter |
US10074269B2 (en) * | 2017-01-09 | 2018-09-11 | Nintendo Co., Ltd. | Communication system, apparatus and method |
TWI616660B (en) * | 2017-07-03 | 2018-03-01 | 國立中山大學 | Valley detector of flyback convertor |
TWI635293B (en) * | 2018-03-22 | 2018-09-11 | 昕鈺實業股份有限公司 | Cable operation detection system |
TWI658694B (en) * | 2018-08-01 | 2019-05-01 | 龍華科技大學 | Improved non-contact flyback converter |
GB2588755B (en) * | 2019-10-25 | 2021-10-27 | British Telecomm | Methods and systems for characterising impedance discontinuities on electrical transmission lines |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4087657A (en) * | 1977-04-15 | 1978-05-02 | Bell Telephone Laboratories, Incorporated | Testing of inductively loaded transmission lines for correct loading |
US5128619A (en) * | 1989-04-03 | 1992-07-07 | Bjork Roger A | System and method of determining cable characteristics |
US5440528A (en) * | 1993-04-06 | 1995-08-08 | Fluke Corporation | Dual time base zero dead zone time domain reflectometer |
US5461318A (en) * | 1994-06-08 | 1995-10-24 | Borchert; Marshall B. | Apparatus and method for improving a time domain reflectometer |
US5530367A (en) * | 1995-01-06 | 1996-06-25 | Fluke Corporaton | Pulse based cable attenuation measurement system |
US5731869A (en) * | 1995-06-30 | 1998-03-24 | Ando Electric Co., Ltd. | Optical fiber testing method for measuring connection location and connection loss |
US5881130A (en) * | 1997-09-15 | 1999-03-09 | Teradyne, Inc. | Fast and noise-insensitive load status detection |
US5994905A (en) * | 1997-12-02 | 1999-11-30 | Wavetek Corporation | Frequency domain reflectometer and method of suppressing harmonics |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8913720D0 (en) * | 1989-06-15 | 1989-08-02 | Cambridge Consultants | Musical instrument based on tdr tactile sensor |
US5121420A (en) | 1990-09-17 | 1992-06-09 | Rolm Systems | Automatic line defect detector |
US5369366A (en) | 1993-02-12 | 1994-11-29 | Cable Repair Systems Corporation | Method of finding faults in a branched electrical distribution circuit |
US5521512A (en) | 1993-08-16 | 1996-05-28 | The Penn State Research Foundation | Time domain reflectometer using successively delayed test pulses and an interleaved sampling procedure |
DE4335924C1 (en) | 1993-10-21 | 1995-01-05 | Hagenuk Telecom Gmbh | Method and device for locating cable faults |
US5528356A (en) * | 1995-03-20 | 1996-06-18 | Tektronix, Inc. | Apparatus and method for displaying multiple sample spacing waveform segments |
US5650728A (en) | 1995-04-03 | 1997-07-22 | Hubbell Incorporated | Fault detection system including a capacitor for generating a pulse and a processor for determining admittance versus frequency of a reflected pulse |
US6195614B1 (en) * | 1997-06-02 | 2001-02-27 | Tektronix, Inc. | Method of characterizing events in acquired waveform data from a metallic transmission cable |
US6104197A (en) * | 1997-06-02 | 2000-08-15 | Tektronix, Inc. | Apparatus for acquiring waveform data from a metallic transmission cable |
US6263047B1 (en) * | 1999-09-07 | 2001-07-17 | Tempo Research Corporation | Apparatus and method for characterizing the loading pattern of a telecommunications transmission line |
US6448781B1 (en) * | 2000-10-06 | 2002-09-10 | Northrop Grumman Corporation | Method and system for analyzing cable faults |
-
2001
- 2001-02-23 US US09/792,726 patent/US6574311B1/en not_active Expired - Lifetime
-
2002
- 2002-02-14 CA CA002438240A patent/CA2438240C/en not_active Expired - Fee Related
- 2002-02-14 AU AU2002253954A patent/AU2002253954A1/en not_active Abandoned
- 2002-02-14 WO PCT/US2002/004443 patent/WO2002068969A2/en active IP Right Grant
- 2002-02-14 AT AT02723156T patent/ATE337675T1/en not_active IP Right Cessation
- 2002-02-14 EP EP02723156A patent/EP1402709B1/en not_active Expired - Lifetime
- 2002-02-14 DE DE60214183T patent/DE60214183D1/en not_active Expired - Lifetime
- 2002-02-18 TW TW091102716A patent/TW561265B/en not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4087657A (en) * | 1977-04-15 | 1978-05-02 | Bell Telephone Laboratories, Incorporated | Testing of inductively loaded transmission lines for correct loading |
US5128619A (en) * | 1989-04-03 | 1992-07-07 | Bjork Roger A | System and method of determining cable characteristics |
US5440528A (en) * | 1993-04-06 | 1995-08-08 | Fluke Corporation | Dual time base zero dead zone time domain reflectometer |
US5461318A (en) * | 1994-06-08 | 1995-10-24 | Borchert; Marshall B. | Apparatus and method for improving a time domain reflectometer |
US5530367A (en) * | 1995-01-06 | 1996-06-25 | Fluke Corporaton | Pulse based cable attenuation measurement system |
US5731869A (en) * | 1995-06-30 | 1998-03-24 | Ando Electric Co., Ltd. | Optical fiber testing method for measuring connection location and connection loss |
US5881130A (en) * | 1997-09-15 | 1999-03-09 | Teradyne, Inc. | Fast and noise-insensitive load status detection |
US5994905A (en) * | 1997-12-02 | 1999-11-30 | Wavetek Corporation | Frequency domain reflectometer and method of suppressing harmonics |
Also Published As
Publication number | Publication date |
---|---|
EP1402709B1 (en) | 2006-08-23 |
EP1402709A2 (en) | 2004-03-31 |
CA2438240A1 (en) | 2002-09-06 |
ATE337675T1 (en) | 2006-09-15 |
AU2002253954A1 (en) | 2002-09-12 |
EP1402709A4 (en) | 2004-11-24 |
US6574311B1 (en) | 2003-06-03 |
TW561265B (en) | 2003-11-11 |
WO2002068969A8 (en) | 2003-12-24 |
WO2002068969A2 (en) | 2002-09-06 |
CA2438240C (en) | 2006-04-18 |
DE60214183D1 (en) | 2006-10-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2304911A1 (en) | Luminaire starting aid device | |
WO2002081031A3 (en) | Apparatus and method for sensing of fire and directed fire suppression | |
ATE438968T1 (en) | SILENCE DETECTION | |
CA2329116A1 (en) | Block/inhibiting operation in an arc fault detection system | |
CA2078599A1 (en) | Method and apparatus for monitoring a network for customer signaling during the term of a call | |
WO2002049273A3 (en) | Automatic configuration of a network | |
WO2002068969A3 (en) | Detecting a bridge tap or end-of-line of a telephone line using time-domain reflectometry | |
US6049446A (en) | Alarm systems and devices incorporating current limiting circuit | |
EP0827322A3 (en) | Telemetry apparatus | |
WO1997013329A3 (en) | Methods and apparatus for automating contact closure | |
WO2001031890A3 (en) | Method and apparatus for delay-line time-domain reflectometry | |
NO982867D0 (en) | Newly substituted 4- (1H-benzimidazol-2-yl) 1,4-diazepanes useful for the treatment of allergic diseases | |
EP1313205A3 (en) | Dimmer with load type detection | |
FR2707784B1 (en) | Alarm triggering device, in particular for fire detection installation. | |
EP0746121A3 (en) | Synchronization regeneration circuit | |
WO2000065849A8 (en) | Enhancing an intelligent network service | |
DE59601883D1 (en) | C-C TRIPLE LINKS CONTAINING TETRAHYDROFURAN / BUT-2-IN-1,4-DIOL COPOLYMERS | |
JP4513374B2 (en) | Lighting device | |
KR970056542A (en) | Automatically forming apparatus and method for speakerphone call by sensing sensor in telephone terminal device | |
KR100217040B1 (en) | Apparatus and method for converting ring signal in a keyphone system | |
CA2136562A1 (en) | Circuit for sensing telephone line conditions | |
WO2003046854A3 (en) | Device for detecting an inadmissible operating state | |
DE59911977D1 (en) | Apparatus for generating a pseudo-charge signal for a toll call in a public communications network | |
KR970047910U (en) | Electronic product remote control device using telephone line | |
ITRM950376A0 (en) | DEVICE FOR MONITORING AND CONTROL OF TELEPHONE EQUIPMENT AVAILABLE TO THE PUBLIC. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A3 Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ CZ DE DE DK DK DM DZ EC EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SK SL TJ TM TN TR TT TZ UA UG UZ VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A3 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2438240 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2002723156 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
CFP | Corrected version of a pamphlet front page | ||
CR1 | Correction of entry in section i |
Free format text: IN PCT GAZETTE 36/2002 DUE TO A TECHNICAL PROBLEMAT THE TIME OF INTERNATIONAL PUBLICATION, SOME INFORMATION WAS MISSING UNDER (81). THE MISSING INFORMATION NOW APPEARS IN THE CORRECTED VERSION |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 2002723156 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |
|
WWG | Wipo information: grant in national office |
Ref document number: 2002723156 Country of ref document: EP |