ATE47946T1 - Zweifachspeisespannungsschaltungsstruktur fuer eine fernsprechleitungsschaltung. - Google Patents
Zweifachspeisespannungsschaltungsstruktur fuer eine fernsprechleitungsschaltung.Info
- Publication number
- ATE47946T1 ATE47946T1 AT85401986T AT85401986T ATE47946T1 AT E47946 T1 ATE47946 T1 AT E47946T1 AT 85401986 T AT85401986 T AT 85401986T AT 85401986 T AT85401986 T AT 85401986T AT E47946 T1 ATE47946 T1 AT E47946T1
- Authority
- AT
- Austria
- Prior art keywords
- line
- telephone line
- power supply
- dual power
- voltage source
- Prior art date
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
- H04M19/008—Using DC/DC converters
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephone Function (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/660,585 US4602130A (en) | 1984-10-15 | 1984-10-15 | Dual voltage source feed circuit configuration for a telephone line circuit |
EP85401986A EP0178992B1 (de) | 1984-10-15 | 1985-10-14 | Zweifachspeisespannungsschaltungsstruktur für eine Fernsprechleitungsschaltung |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE47946T1 true ATE47946T1 (de) | 1989-11-15 |
Family
ID=24650127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT85401986T ATE47946T1 (de) | 1984-10-15 | 1985-10-14 | Zweifachspeisespannungsschaltungsstruktur fuer eine fernsprechleitungsschaltung. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4602130A (de) |
EP (1) | EP0178992B1 (de) |
JP (1) | JPS6196861A (de) |
AT (1) | ATE47946T1 (de) |
AU (1) | AU584125B2 (de) |
ES (1) | ES8704058A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4761812A (en) * | 1985-12-10 | 1988-08-02 | U.S. Holding Company, Inc. | Constant power telephone line circuit |
SE9300941L (sv) * | 1993-03-22 | 1994-09-23 | Rosengren Teknik Ab | Anordning för sammankoppling av två apparater försedda med telelinjeanslutning |
US5659610A (en) * | 1994-09-28 | 1997-08-19 | Lucent Technologies Inc. | Battery feed circuit |
US6157716A (en) * | 1998-05-08 | 2000-12-05 | Bell Atlantic Corporation | Power feed circuit providing both on-hook and off-hook power for telephone subscriber loop |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4142075A (en) * | 1977-10-11 | 1979-02-27 | Burr-Brown Research Corporation | Interface circuit and method for telephone extension lines |
NL7807531A (nl) * | 1978-07-13 | 1980-01-15 | Philips Nv | Inrichting voor het toevoeren van een signaal aan een transmissielijn. |
US4254305A (en) * | 1979-02-07 | 1981-03-03 | International Telephone And Telegraph Corporation | Current limited subscriber line feed circuit |
NL7903662A (nl) * | 1979-05-10 | 1980-11-12 | Philips Nv | Lijncircuit. |
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 |
US4387273A (en) * | 1980-08-25 | 1983-06-07 | International Telephone And Telegraph Corporation | Subscriber line interface circuit with impedance synthesizer |
DE3264466D1 (en) * | 1981-01-28 | 1985-08-08 | Hitachi Ltd | Current supply circuit |
CA1157175A (en) * | 1981-02-20 | 1983-11-15 | Mitel Corporation | Power saving line circuit |
JPS5883492A (ja) * | 1981-11-12 | 1983-05-19 | Nec Corp | 加入者回路の低電力化方式 |
US4514595A (en) * | 1982-06-10 | 1985-04-30 | Northern Telecom Limited | Active impedance line feed circuit |
US4511763A (en) * | 1982-11-01 | 1985-04-16 | Gte Communication Systems Corporation | Floating dc current source for a subscriber loop circuit |
US4499532A (en) * | 1983-03-23 | 1985-02-12 | At&T Bell Laboratories | Floating battery feed circuit |
-
1984
- 1984-10-15 US US06/660,585 patent/US4602130A/en not_active Expired - Fee Related
-
1985
- 1985-10-03 AU AU48234/85A patent/AU584125B2/en not_active Ceased
- 1985-10-14 EP EP85401986A patent/EP0178992B1/de not_active Expired
- 1985-10-14 AT AT85401986T patent/ATE47946T1/de not_active IP Right Cessation
- 1985-10-15 JP JP60227952A patent/JPS6196861A/ja active Pending
- 1985-10-15 ES ES547883A patent/ES8704058A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES547883A0 (es) | 1987-02-16 |
AU584125B2 (en) | 1989-05-18 |
ES8704058A1 (es) | 1987-02-16 |
EP0178992B1 (de) | 1989-11-08 |
AU4823485A (en) | 1986-04-24 |
JPS6196861A (ja) | 1986-05-15 |
EP0178992A3 (en) | 1987-02-25 |
US4602130A (en) | 1986-07-22 |
EP0178992A2 (de) | 1986-04-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |