FR2423096B1 - - Google Patents
Info
- Publication number
- FR2423096B1 FR2423096B1 FR7801170A FR7801170A FR2423096B1 FR 2423096 B1 FR2423096 B1 FR 2423096B1 FR 7801170 A FR7801170 A FR 7801170A FR 7801170 A FR7801170 A FR 7801170A FR 2423096 B1 FR2423096 B1 FR 2423096B1
- 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
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/026—Arrangements for interrupting the ringing current
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7801170A FR2423096A1 (en) | 1978-01-17 | 1978-01-17 | Ringing circuit for centrally controlled telephone exchange junction - has alternating signal source, and bipolar electronic switch output connected to subscriber and timer |
IT19275/79A IT1111760B (en) | 1978-01-17 | 1979-01-15 | RINGER CONFERENCE FOR TELEPHONE CENTRAL SPLITTER WITH CENTRALIZED CONTROL UNIT |
BE192979A BE873499A (en) | 1978-01-17 | 1979-01-16 | RINGING ARRANGEMENT FOR TELEPHONE CONTROL UNIT WITH CENTRALIZED CONTROL UNIT |
ES476875A ES476875A1 (en) | 1978-01-17 | 1979-01-16 | Ringing circuit for centrally controlled telephone exchange junction - has alternating signal source, and bipolar electronic switch output connected to subscriber and timer |
DE19792901739 DE2901739A1 (en) | 1978-01-17 | 1979-01-17 | CALL DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7801170A FR2423096A1 (en) | 1978-01-17 | 1978-01-17 | Ringing circuit for centrally controlled telephone exchange junction - has alternating signal source, and bipolar electronic switch output connected to subscriber and timer |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2423096A1 FR2423096A1 (en) | 1979-11-09 |
FR2423096B1 true FR2423096B1 (en) | 1981-10-16 |
Family
ID=9203528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7801170A Granted FR2423096A1 (en) | 1978-01-17 | 1978-01-17 | Ringing circuit for centrally controlled telephone exchange junction - has alternating signal source, and bipolar electronic switch output connected to subscriber and timer |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE873499A (en) |
DE (1) | DE2901739A1 (en) |
ES (1) | ES476875A1 (en) |
FR (1) | FR2423096A1 (en) |
IT (1) | IT1111760B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
YU39444B (en) * | 1979-09-07 | 1984-12-31 | Iskra Sozd Elektro Indus | Subschribes circuit for domestic electronic telephone exchangers |
IT1128374B (en) * | 1980-02-19 | 1986-05-28 | Cselt Centro Studi Lab Telecom | TELEPHONE CIRCUIT FOR THE GENERATION OF THE RINGTONE RHYTHM AND THE DETECTION OF THE RELEASE |
US4349703A (en) * | 1980-03-31 | 1982-09-14 | International Telephone And Telegraph Corporation | Programmable ring signal generator |
DE3036686C2 (en) * | 1980-09-29 | 1983-12-01 | Siemens AG, 1000 Berlin und 8000 München | Subscriber line circuit |
DE3141375A1 (en) * | 1981-10-17 | 1983-06-30 | Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg | METHOD AND CIRCUIT ARRANGEMENT FOR DETECTING LOOP CURRENT CRITERIA IN A TELECOMMUNICATION SYSTEM |
-
1978
- 1978-01-17 FR FR7801170A patent/FR2423096A1/en active Granted
-
1979
- 1979-01-15 IT IT19275/79A patent/IT1111760B/en active
- 1979-01-16 BE BE192979A patent/BE873499A/en unknown
- 1979-01-16 ES ES476875A patent/ES476875A1/en not_active Expired
- 1979-01-17 DE DE19792901739 patent/DE2901739A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE2901739A1 (en) | 1979-07-19 |
BE873499A (en) | 1979-05-16 |
IT1111760B (en) | 1986-01-13 |
FR2423096A1 (en) | 1979-11-09 |
ES476875A1 (en) | 1979-05-16 |
IT7919275A0 (en) | 1979-01-15 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |