ES547610A0 - Una configuracion de un circuito para sistemas telefonicos - Google Patents
Una configuracion de un circuito para sistemas telefonicosInfo
- Publication number
- ES547610A0 ES547610A0 ES547610A ES547610A ES547610A0 ES 547610 A0 ES547610 A0 ES 547610A0 ES 547610 A ES547610 A ES 547610A ES 547610 A ES547610 A ES 547610A ES 547610 A0 ES547610 A0 ES 547610A0
- Authority
- ES
- Spain
- Prior art keywords
- configuration
- circuit
- telephone systems
- telephone
- systems
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/0096—Trunk circuits
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 |
---|---|---|---|
AT0316784A AT384919B (de) | 1984-10-05 | 1984-10-05 | Schaltungsanordnung fuer fernsprechnetze |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8703699A1 ES8703699A1 (es) | 1987-02-16 |
ES547610A0 true ES547610A0 (es) | 1987-02-16 |
Family
ID=3546374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES547610A Expired ES8703699A1 (es) | 1984-10-05 | 1985-10-04 | Una configuracion de un circuito para sistemas telefonicos |
Country Status (12)
Country | Link |
---|---|
US (1) | US4670902A (es) |
EP (1) | EP0181316B1 (es) |
KR (1) | KR860003721A (es) |
CN (1) | CN85107283B (es) |
AT (1) | AT384919B (es) |
BR (1) | BR8504875A (es) |
DE (1) | DE3584821D1 (es) |
EG (1) | EG17436A (es) |
ES (1) | ES8703699A1 (es) |
IN (1) | IN165967B (es) |
TR (1) | TR23906A (es) |
ZA (1) | ZA857404B (es) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5920846A (en) * | 1996-02-27 | 1999-07-06 | Southwestern Bell Telephone Co. | Method and system for processing a service request relating to installation, maintenance or repair of telecommunications services provided to a customer premises |
DE19708929A1 (de) * | 1997-03-05 | 1998-09-10 | Zahnradfabrik Friedrichshafen | Steuerung von Nebenabtrieben in automatisierten Fahrzeuggetrieben |
WO1999053627A1 (en) | 1998-04-10 | 1999-10-21 | Chrimar Systems, Inc. Doing Business As Cms Technologies | System for communicating with electronic equipment on a network |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3932712A (en) * | 1972-06-14 | 1976-01-13 | Stromberg-Carlson Corporation | Telephone transmission system |
US3903378A (en) * | 1974-03-27 | 1975-09-02 | Gte Automatic Electric Lab Inc | Arrangement for controlling the gain of two-way amplifiers in accordance with loop lengths |
US4074087A (en) * | 1976-08-16 | 1978-02-14 | Bell Telephone Laboratories, Incorporated | Bidirectional voice frequency repeater |
US4096363A (en) * | 1977-05-24 | 1978-06-20 | Bell Telephone Laboratories, Incorporated | Transmission network including flux compensation |
CA1123131A (en) * | 1978-02-28 | 1982-05-04 | Michael C.J. Cowpland | Transformerless trunk circuit |
US4229625A (en) * | 1978-12-29 | 1980-10-21 | Bell Telephone Laboratories, Incorporated | Repeater level control circuit |
US4331842A (en) * | 1980-02-11 | 1982-05-25 | Reliance Electric Company | Voice frequency repeater and term sets and other circuits therefor |
US4373118A (en) * | 1981-06-08 | 1983-02-08 | Bell Telephone Laboratories, Incorporated | Battery feed circuit |
DE3226686A1 (de) * | 1982-07-16 | 1984-01-19 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur abgabe von gleichstrom-schaltkennzeichen in einem kennzeichenumsetzer |
US4600811A (en) * | 1982-12-28 | 1986-07-15 | Nec Corporation | Subscriber line interface circuit |
-
1984
- 1984-10-05 AT AT0316784A patent/AT384919B/de not_active IP Right Cessation
-
1985
- 1985-09-25 ZA ZA857404A patent/ZA857404B/xx unknown
- 1985-09-27 EP EP85890239A patent/EP0181316B1/de not_active Expired - Lifetime
- 1985-09-27 DE DE8585890239T patent/DE3584821D1/de not_active Expired - Lifetime
- 1985-10-03 BR BR8504875A patent/BR8504875A/pt not_active IP Right Cessation
- 1985-10-03 EG EG627/85A patent/EG17436A/xx active
- 1985-10-04 CN CN85107283A patent/CN85107283B/zh not_active Expired
- 1985-10-04 KR KR1019850007288A patent/KR860003721A/ko not_active Application Discontinuation
- 1985-10-04 ES ES547610A patent/ES8703699A1/es not_active Expired
- 1985-10-04 US US06/784,412 patent/US4670902A/en not_active Expired - Fee Related
- 1985-10-08 IN IN786/MAS/85A patent/IN165967B/en unknown
- 1985-10-14 TR TR4068985A patent/TR23906A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
TR23906A (tr) | 1990-11-02 |
ES8703699A1 (es) | 1987-02-16 |
EG17436A (en) | 1992-06-30 |
BR8504875A (pt) | 1986-07-22 |
IN165967B (es) | 1990-02-17 |
EP0181316B1 (de) | 1991-12-04 |
DE3584821D1 (de) | 1992-01-16 |
AT384919B (de) | 1988-01-25 |
CN85107283A (zh) | 1986-08-27 |
EP0181316A3 (en) | 1988-05-25 |
ZA857404B (en) | 1986-05-28 |
EP0181316A2 (de) | 1986-05-14 |
US4670902A (en) | 1987-06-02 |
CN85107283B (zh) | 1988-11-16 |
ATA316784A (de) | 1987-06-15 |
KR860003721A (ko) | 1986-05-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19971001 |