KR920017423A - 데이타 전송 선로 시험 회로 - Google Patents
데이타 전송 선로 시험 회로 Download PDFInfo
- Publication number
- KR920017423A KR920017423A KR1019920002993A KR920002993A KR920017423A KR 920017423 A KR920017423 A KR 920017423A KR 1019920002993 A KR1019920002993 A KR 1019920002993A KR 920002993 A KR920002993 A KR 920002993A KR 920017423 A KR920017423 A KR 920017423A
- Authority
- KR
- South Korea
- Prior art keywords
- relay
- test circuit
- test
- circuit
- data transmission
- Prior art date
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/02—Calling substations, e.g. by ringing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Telephone Function (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따르는 TOTS 선로용 원격 선로 시험 설비의 회로도.
Claims (4)
- 폐전류/신호거리 검출기와 작동시 통화완료 표시를 제공하기위해 정상전류를 단락시키는데 사용되는 릴레이를 포함하는 데이터 전송 선로 시험 회로로서, 상기 릴레이가 상기 폐전류/신호거리 검출기로부터 시험 모드 검출기로서 기능하는 비교기로의 전환을 위한 일시험 모드에서도 작동하는 것을 특징으로 하는 상기 시험회로.
- 제1항에 있어서, 상기 회로가 제2시험모드상태일때 상기 제1릴레이와 동시에 작동하며 벨 콘덴서에 접속되고 그 콘덴서에 의해 방전률이 측정될 수 있는 제2릴레이를 포함하는 것을 특징으로 하는 시험회로.
- 제2항에 있어서, 상기 비교기 출력이 절연상태, 벨 콘덴서와 단자 접속에 관한 정보를 제공하도록 순서적으로 감시되는 것을 특징으로 하는 시험회로.
- 제2항 또는 제3항에 있어서, 상기 제2릴레이가 복귀된 후 상기 제1릴레이가 복귀되는 것을 특징으로 하는 시험회로.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9104133.5 | 1991-02-27 | ||
GB919104133A GB9104133D0 (en) | 1991-02-27 | 1991-02-27 | Remote line test facility |
Publications (1)
Publication Number | Publication Date |
---|---|
KR920017423A true KR920017423A (ko) | 1992-09-26 |
Family
ID=10690678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920002993A KR920017423A (ko) | 1991-02-27 | 1992-02-26 | 데이타 전송 선로 시험 회로 |
Country Status (12)
Country | Link |
---|---|
US (1) | US5345496A (ko) |
EP (1) | EP0501775B1 (ko) |
JP (1) | JPH0583379A (ko) |
KR (1) | KR920017423A (ko) |
CN (1) | CN1064577A (ko) |
AU (1) | AU1130892A (ko) |
CA (1) | CA2061899A1 (ko) |
DE (1) | DE69224224T2 (ko) |
ES (1) | ES2111608T3 (ko) |
FI (1) | FI920853A (ko) |
GB (2) | GB9104133D0 (ko) |
IE (1) | IE920563A1 (ko) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9213992D0 (en) * | 1992-07-01 | 1992-08-12 | Raychem Ltd | Remotely actuated switch and protection circuit |
GB9218134D0 (en) * | 1992-08-26 | 1992-10-14 | Raychem Sa Nv | Communication channel switching arrangement |
US5886642A (en) * | 1997-12-30 | 1999-03-23 | Midland Manufacturing Corp. | Tank barge interface |
US6212258B1 (en) | 1998-11-25 | 2001-04-03 | Westell Technologies, Inc. | Device for remotely testing a twisted pair transmission line |
US6181775B1 (en) * | 1998-11-25 | 2001-01-30 | Westell Technologies, Inc. | Dual test mode network interface unit for remote testing of transmission line and customer equipment |
US6278769B1 (en) | 1998-11-25 | 2001-08-21 | Westell Technologies, Inc. | Signaling method for invoking a test mode in a network interface unit |
AU4007300A (en) * | 1999-05-10 | 2000-11-21 | Westell Technologies, Inc. | Signaling method for invoking a test mode in a network interface unit |
US8494120B2 (en) * | 2009-11-18 | 2013-07-23 | General Instrument Corporation | Detecting foreign voltage faults in telephone customer premise equipment |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4079210A (en) * | 1977-05-11 | 1978-03-14 | Bell Telephone Laboratories, Incorporated | Ringing and testing control circuitry for communication systems |
US4196321A (en) * | 1978-12-29 | 1980-04-01 | Bell Telephone Laboratories, Incorporated | Loopback test system |
DE2911517C2 (de) * | 1979-03-23 | 1981-07-09 | Siemens AG, 1000 Berlin und 8000 München | Teilnehmeranschlußschaltung mit Erdtasten- und Isolationsfehlerindikation |
FR2481032A1 (fr) * | 1980-04-16 | 1981-10-23 | Metais Gerard | Systeme de localisation d'ouvertures et de boucles notamment dans une ligne telephonique d'abonne |
US4320258A (en) * | 1980-07-07 | 1982-03-16 | Bell Telephone Laboratories, Incorporated | Arrangement for requesting service for called telephone subscribers |
GB2149616B (en) * | 1983-11-10 | 1987-10-07 | Standard Telephones Cables Ltd | Testing telephone lines |
US4600810A (en) * | 1984-09-07 | 1986-07-15 | Amp Incorporated | Telephone line tester |
JPH0744604B2 (ja) * | 1985-05-17 | 1995-05-15 | 日本電気株式会社 | 加入者線監視回路 |
US4736403A (en) * | 1986-08-08 | 1988-04-05 | Rice Multiphones, Inc. | Telephone line tester |
US4841560A (en) * | 1987-10-16 | 1989-06-20 | Harris Corp. | Direct access test unit for central office |
US5054050A (en) * | 1990-04-30 | 1991-10-01 | American Telephone & Telegraph Co. | Drop testing in fiber to the home systems |
-
1991
- 1991-02-27 GB GB919104133A patent/GB9104133D0/en active Pending
-
1992
- 1992-02-21 IE IE056392A patent/IE920563A1/en unknown
- 1992-02-24 JP JP4072794A patent/JPH0583379A/ja active Pending
- 1992-02-26 DE DE69224224T patent/DE69224224T2/de not_active Expired - Lifetime
- 1992-02-26 FI FI920853A patent/FI920853A/fi not_active Application Discontinuation
- 1992-02-26 KR KR1019920002993A patent/KR920017423A/ko not_active Application Discontinuation
- 1992-02-26 ES ES92301615T patent/ES2111608T3/es not_active Expired - Lifetime
- 1992-02-26 GB GB9204081A patent/GB2253543B/en not_active Expired - Lifetime
- 1992-02-26 EP EP92301615A patent/EP0501775B1/en not_active Expired - Lifetime
- 1992-02-26 CA CA002061899A patent/CA2061899A1/en not_active Abandoned
- 1992-02-27 CN CN92101380A patent/CN1064577A/zh active Pending
- 1992-02-27 AU AU11308/92A patent/AU1130892A/en not_active Abandoned
-
1993
- 1993-10-19 US US08/139,335 patent/US5345496A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0583379A (ja) | 1993-04-02 |
DE69224224D1 (de) | 1998-03-05 |
US5345496A (en) | 1994-09-06 |
IE920563A1 (en) | 1992-09-09 |
AU1130892A (en) | 1992-09-03 |
EP0501775A2 (en) | 1992-09-02 |
GB9204081D0 (en) | 1992-04-08 |
CA2061899A1 (en) | 1992-08-28 |
GB9104133D0 (en) | 1991-04-17 |
EP0501775A3 (en) | 1993-12-22 |
DE69224224T2 (de) | 1998-05-20 |
FI920853A0 (fi) | 1992-02-26 |
EP0501775B1 (en) | 1998-01-28 |
ES2111608T3 (es) | 1998-03-16 |
FI920853A (fi) | 1992-08-28 |
CN1064577A (zh) | 1992-09-16 |
GB2253543B (en) | 1994-11-16 |
GB2253543A (en) | 1992-09-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITB | Written withdrawal of application |