IT8467922A1 - Congiuntore di abbonato telefonico. - Google Patents
Congiuntore di abbonato telefonico.Info
- Publication number
- IT8467922A1 IT8467922A1 IT1984A67922A IT6792284A IT8467922A1 IT 8467922 A1 IT8467922 A1 IT 8467922A1 IT 1984A67922 A IT1984A67922 A IT 1984A67922A IT 6792284 A IT6792284 A IT 6792284A IT 8467922 A1 IT8467922 A1 IT 8467922A1
- Authority
- IT
- Italy
- Prior art keywords
- telephone subscriber
- subscriber connector
- connector
- telephone
- subscriber
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8314693A FR2552288B1 (fr) | 1983-09-15 | 1983-09-15 | Joncteur d'abonne telephonique |
Publications (3)
Publication Number | Publication Date |
---|---|
IT8467922A0 IT8467922A0 (it) | 1984-09-14 |
IT8467922A1 true IT8467922A1 (it) | 1986-03-14 |
IT1179123B IT1179123B (it) | 1987-09-16 |
Family
ID=9292249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT67922/84A IT1179123B (it) | 1983-09-15 | 1984-09-14 | Congiuntore di abbonato telefonico |
Country Status (4)
Country | Link |
---|---|
US (1) | US4682355A (it) |
FR (1) | FR2552288B1 (it) |
GB (1) | GB2146873B (it) |
IT (1) | IT1179123B (it) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4791668A (en) * | 1987-09-23 | 1988-12-13 | Northern Telecom Limited | Selectable impedance line interface circuit |
US4899382A (en) * | 1988-06-15 | 1990-02-06 | Siemens Transmission Systems, Inc. | Telephone circuit using DC blocked transformer and negative impedance technique |
US5052039A (en) * | 1990-01-16 | 1991-09-24 | Northern Telecom Limited | Line interface circuit |
EP0450884B1 (en) * | 1990-04-04 | 1996-06-12 | Seiscor Technologies, Inc. | A subscriber line interface circuit providing regulated current |
CA2097354A1 (en) * | 1992-08-06 | 1994-02-07 | Ian A. Schorr | Battery feed circuit |
US5515433A (en) * | 1994-08-30 | 1996-05-07 | Reltec Corporation | Resistance forward telephone line feed circuit |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE306104B (it) * | 1966-09-19 | 1968-11-18 | Siemens Ag | |
FR2038463A5 (it) * | 1969-03-12 | 1971-01-08 | Person Jean | |
US3562561A (en) * | 1969-03-21 | 1971-02-09 | Bell Telephone Labor Inc | Shunt-type negative impedance converter with both short and open circuit stability |
US3987375A (en) * | 1975-03-25 | 1976-10-19 | Stromberg-Carlson Corporation | Transmission bridge exhibiting reduced distortion |
US4197431A (en) * | 1978-10-02 | 1980-04-08 | Digital Telephone Systems, Inc. | Subscriber loop feed apparatus |
GB2042848B (en) * | 1978-12-30 | 1983-01-06 | Plessey Co Ltd | Line current feed and hybrid arrangement (sytem x) |
FR2462006A1 (fr) * | 1979-07-20 | 1981-02-06 | Ibm France | Dispositif pour augmenter l'inductance parallele d'un transformateur |
US4532384A (en) * | 1983-02-04 | 1985-07-30 | Northern Telecom Limited | Line feed circuit including negative impedance circuit |
-
1983
- 1983-09-15 FR FR8314693A patent/FR2552288B1/fr not_active Expired
-
1984
- 1984-09-10 GB GB08422787A patent/GB2146873B/en not_active Expired
- 1984-09-13 US US06/650,181 patent/US4682355A/en not_active Expired - Lifetime
- 1984-09-14 IT IT67922/84A patent/IT1179123B/it active
Also Published As
Publication number | Publication date |
---|---|
FR2552288B1 (fr) | 1989-03-24 |
US4682355A (en) | 1987-07-21 |
IT8467922A0 (it) | 1984-09-14 |
GB2146873A (en) | 1985-04-24 |
FR2552288A1 (fr) | 1985-03-22 |
GB2146873B (en) | 1987-08-05 |
GB8422787D0 (en) | 1984-10-17 |
IT1179123B (it) | 1987-09-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19990226 |