FR2296325B1 - - Google Patents
Info
- Publication number
- FR2296325B1 FR2296325B1 FR7535237A FR7535237A FR2296325B1 FR 2296325 B1 FR2296325 B1 FR 2296325B1 FR 7535237 A FR7535237 A FR 7535237A FR 7535237 A FR7535237 A FR 7535237A FR 2296325 B1 FR2296325 B1 FR 2296325B1
- Authority
- FR
- France
- 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
Links
Classifications
-
- 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
- H04M19/005—Feeding arrangements without the use of line transformers
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1721974A CH586983A5 (en) | 1974-12-23 | 1974-12-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2296325A1 FR2296325A1 (en) | 1976-07-23 |
FR2296325B1 true FR2296325B1 (en) | 1981-03-06 |
Family
ID=4423686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7535237A Granted FR2296325A1 (en) | 1974-12-23 | 1975-11-10 | METHOD FOR REDUCING THE DISSIPATION OF THE SUPPLY POWER IN THE SUBSCRIBER CIRCUIT OF A COMMUNICATION SYSTEM AND ARRANGEMENT FOR THE IMPLEMENTATION OF THIS PROCESS |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5929985B2 (en) |
CH (1) | CH586983A5 (en) |
DE (1) | DE2551916C3 (en) |
FR (1) | FR2296325A1 (en) |
GB (1) | GB1489143A (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2655005C3 (en) * | 1976-12-02 | 1980-04-17 | Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin | Circuit arrangement for an electronic subscriber feed |
NL7614118A (en) * | 1976-12-20 | 1978-06-22 | Philips Nv | CIRCUIT FOR PROTECTING TELEPHONE LINES. |
JPS54151307A (en) * | 1978-05-19 | 1979-11-28 | Nec Corp | Supply circuit for communication current |
US4254305A (en) * | 1979-02-07 | 1981-03-03 | International Telephone And Telegraph Corporation | Current limited subscriber line feed circuit |
NL7903662A (en) * | 1979-05-10 | 1980-11-12 | Philips Nv | LINE CIRCUIT. |
NL7903664A (en) * | 1979-05-10 | 1980-11-12 | Philips Nv | LINE CIRCUIT. |
NL7903663A (en) * | 1979-05-10 | 1980-11-12 | Philips Nv | AMPLIFIER FOR APPLICATION IN A LINE CIRCUIT. |
US4315106A (en) * | 1979-11-28 | 1982-02-09 | International Telephone And Telegraph Corporation | Apparatus for regulating current supplied to a telephone line signal of the type employed in digital telephone systems |
GB2065418B (en) * | 1979-12-06 | 1984-02-15 | Standard Telephones Cables Ltd | Telephone line feed |
EP0087593B1 (en) * | 1982-02-25 | 1987-01-21 | Siemens Aktiengesellschaft | Circuit arrangement for telecommunication installations, especially for telephone exchange installations, with direct voltage converters |
JPS5983452A (en) * | 1982-11-05 | 1984-05-14 | Fujitsu Ltd | Dc current supply system in exchange |
IT1214603B (en) * | 1985-04-30 | 1990-01-18 | Ates Componenti Elettron | TELEPHONE CIRCUIT, MONOLITHICALLY INTEGRABLE, FOR THE SUPPLY OF A USER TELEPHONE LINE. |
SE465799B (en) * | 1990-03-15 | 1991-10-28 | Ericsson Telefon Ab L M | DEVICE FOR REDUCED POWER SUPPLY TO A SUBSCRIBER LINE |
US5103387A (en) * | 1991-01-31 | 1992-04-07 | Northern Telecom Limited | High voltage converter |
DE4139608A1 (en) * | 1991-11-30 | 1993-06-03 | Siemens Nixdorf Inf Syst | Supply voltage setting system for communications subscriber circuit - uses detected loop circuit resistance upon initial connection of subscriber circuit to 2=wire subscriber line |
DE69229268T2 (en) * | 1992-04-03 | 1999-09-23 | Northern Telecom Ltd | INTERFACE SWITCHING WITH VOLTAGE SWITCHING FOR A TELEPHONE LINE |
DE4233682A1 (en) * | 1992-10-02 | 1994-04-07 | Deutsche Telephonwerk Kabel | Circuit arrangement for the supply of digital devices |
CN105812590B (en) * | 2016-05-11 | 2018-10-12 | 福建星网智慧科技股份有限公司 | A kind of switching method for the long short-term feed of subscribers' line |
-
1974
- 1974-12-23 CH CH1721974A patent/CH586983A5/xx not_active IP Right Cessation
-
1975
- 1975-10-31 GB GB4527475A patent/GB1489143A/en not_active Expired
- 1975-11-10 FR FR7535237A patent/FR2296325A1/en active Granted
- 1975-11-19 DE DE19752551916 patent/DE2551916C3/en not_active Expired
- 1975-12-19 JP JP50150691A patent/JPS5929985B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5186908A (en) | 1976-07-30 |
DE2551916C3 (en) | 1982-02-25 |
DE2551916B2 (en) | 1981-07-02 |
DE2551916A1 (en) | 1976-11-04 |
FR2296325A1 (en) | 1976-07-23 |
GB1489143A (en) | 1977-10-19 |
CH586983A5 (en) | 1977-04-15 |
JPS5929985B2 (en) | 1984-07-24 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |