SE8602889L - Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal - Google Patents
Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignalInfo
- Publication number
- SE8602889L SE8602889L SE8602889A SE8602889A SE8602889L SE 8602889 L SE8602889 L SE 8602889L SE 8602889 A SE8602889 A SE 8602889A SE 8602889 A SE8602889 A SE 8602889A SE 8602889 L SE8602889 L SE 8602889L
- Authority
- SE
- Sweden
- Prior art keywords
- current
- difference
- line
- pct
- voltage
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/001—Current supply source at the exchanger providing current to substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8602889A SE453626B (sv) | 1986-06-27 | 1986-06-27 | Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal |
DE8787904004T DE3774403D1 (de) | 1986-06-27 | 1987-05-26 | Verfahren und geraet zur speisung einer fernsprechleitung. |
KR1019880700207A KR930002588B1 (ko) | 1986-06-27 | 1987-05-26 | 제한된 전지전압에서 왜곡이 없는 음성신호의 전송이 가능하도록 전화선에 전력을 공급하는 방법 및 장치 |
US07/158,271 US4853959A (en) | 1986-06-27 | 1987-05-26 | Method and apparatus for feeding power to a telephone line such that for restricted battery voltage there is enabled the transmission of an undistorted speech signal |
JP62503601A JP2771980B2 (ja) | 1986-06-27 | 1987-05-26 | ひずみのない音声信号を所定電池電圧で伝送するために、電話線に電力を供給する装置および方法 |
PCT/SE1987/000262 WO1988000420A1 (en) | 1986-06-27 | 1987-05-26 | Method and apparatus for feeding power to a telephone line |
EP87904004A EP0269714B1 (en) | 1986-06-27 | 1987-05-26 | Method and apparatus for feeding power to a telephone line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8602889A SE453626B (sv) | 1986-06-27 | 1986-06-27 | Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8602889D0 SE8602889D0 (sv) | 1986-06-27 |
SE8602889L true SE8602889L (sv) | 1987-12-28 |
SE453626B SE453626B (sv) | 1988-02-15 |
Family
ID=20364962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8602889A SE453626B (sv) | 1986-06-27 | 1986-06-27 | Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal |
Country Status (7)
Country | Link |
---|---|
US (1) | US4853959A (sv) |
EP (1) | EP0269714B1 (sv) |
JP (1) | JP2771980B2 (sv) |
KR (1) | KR930002588B1 (sv) |
DE (1) | DE3774403D1 (sv) |
SE (1) | SE453626B (sv) |
WO (1) | WO1988000420A1 (sv) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE501975C2 (sv) * | 1993-11-09 | 1995-07-03 | Ericsson Telefon Ab L M | Gränssnittskrets mellan fyrtrådsledning och tvåtrådsledning |
SE9400186D0 (sv) * | 1994-01-21 | 1994-01-21 | Ericsson Telefon Ab L M | Förfarande i ett telekommunikationssystem |
SE511963C2 (sv) * | 1997-04-23 | 1999-12-20 | Ericsson Telefon Ab L M | Anordning och förfarande för bestämning av linjespänning i en abonnentlinjekrets |
SE509626C2 (sv) * | 1997-06-06 | 1999-02-15 | Ericsson Telefon Ab L M | Förfarande för att reglera signalutrymmet i en abonnentlinjekrets jämte abonnentlinjekrets |
AU1523899A (en) | 1997-11-14 | 1999-06-07 | Foto-Wear, Inc. | Imaging transfer system |
FI104935B (sv) * | 1997-11-18 | 2000-04-28 | Nokia Networks Oy | Abonnentlinjekrets |
FI104933B (sv) * | 1997-11-18 | 2000-04-28 | Nokia Networks Oy | Abonnentlinjekrets |
FI104934B (sv) * | 1997-11-18 | 2000-04-28 | Nokia Networks Oy | Abonnentlinjekrets |
US9596362B1 (en) * | 2015-05-28 | 2017-03-14 | Cottonwood Creek Technologies, Inc. | Automated determination of power transmission resistance |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4476350A (en) * | 1981-02-17 | 1984-10-09 | Bell Telephone Laboratories, Incorporated | Battery feed circuit |
US4431874A (en) * | 1981-09-24 | 1984-02-14 | Motorola, Inc. | Balanced current multiplier circuit for a subscriber loop interface circuit |
SE433285B (sv) * | 1982-09-22 | 1984-05-14 | Ericsson Telefon Ab L M | Anordning for strommatning av en abonnentapparat |
US4727574A (en) * | 1985-09-24 | 1988-02-23 | Northern Telecom Limited | Subscriber line interface circuit with improved d.c. balance |
-
1986
- 1986-06-27 SE SE8602889A patent/SE453626B/sv not_active IP Right Cessation
-
1987
- 1987-05-26 WO PCT/SE1987/000262 patent/WO1988000420A1/en active IP Right Grant
- 1987-05-26 EP EP87904004A patent/EP0269714B1/en not_active Expired - Lifetime
- 1987-05-26 US US07/158,271 patent/US4853959A/en not_active Expired - Lifetime
- 1987-05-26 JP JP62503601A patent/JP2771980B2/ja not_active Expired - Fee Related
- 1987-05-26 KR KR1019880700207A patent/KR930002588B1/ko not_active IP Right Cessation
- 1987-05-26 DE DE8787904004T patent/DE3774403D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
SE453626B (sv) | 1988-02-15 |
KR880701509A (ko) | 1988-07-27 |
SE8602889D0 (sv) | 1986-06-27 |
JPS63503587A (ja) | 1988-12-22 |
US4853959A (en) | 1989-08-01 |
WO1988000420A1 (en) | 1988-01-14 |
DE3774403D1 (de) | 1991-12-12 |
JP2771980B2 (ja) | 1998-07-02 |
KR930002588B1 (ko) | 1993-04-03 |
EP0269714B1 (en) | 1991-11-06 |
EP0269714A1 (en) | 1988-06-08 |
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Legal Events
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