DE69322699D1 - Weckschaltung für einen Telefonapparat - Google Patents
Weckschaltung für einen TelefonapparatInfo
- Publication number
- DE69322699D1 DE69322699D1 DE69322699T DE69322699T DE69322699D1 DE 69322699 D1 DE69322699 D1 DE 69322699D1 DE 69322699 T DE69322699 T DE 69322699T DE 69322699 T DE69322699 T DE 69322699T DE 69322699 D1 DE69322699 D1 DE 69322699D1
- Authority
- DE
- Germany
- Prior art keywords
- telephone set
- alarm circuit
- alarm
- circuit
- telephone
- 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.)
- Expired - Fee Related
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Telephone Set Structure (AREA)
- Circuit For Audible Band Transducer (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Telephone Function (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR929208152A FR2693335B1 (fr) | 1992-07-02 | 1992-07-02 | Circuit de sonnerie notamment pour poste telephonique. |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69322699D1 true DE69322699D1 (de) | 1999-02-04 |
DE69322699T2 DE69322699T2 (de) | 1999-06-10 |
Family
ID=9431448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69322699T Expired - Fee Related DE69322699T2 (de) | 1992-07-02 | 1993-06-24 | Weckschaltung für einen Telefonapparat |
Country Status (6)
Country | Link |
---|---|
US (1) | US5323455A (de) |
EP (1) | EP0577474B1 (de) |
JP (1) | JPH0831897B2 (de) |
DE (1) | DE69322699T2 (de) |
ES (1) | ES2127260T3 (de) |
FR (1) | FR2693335B1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5453780A (en) * | 1994-04-28 | 1995-09-26 | Bell Communications Research, Inc. | Continous presence video signal combiner |
US5699420A (en) * | 1994-12-23 | 1997-12-16 | Lucent Technologies Inc. | Bell sound synthesizer |
US6167135A (en) * | 1995-12-01 | 2000-12-26 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for generating a ringing signal |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4233474A (en) * | 1978-01-10 | 1980-11-11 | Nippon Electric Co., Ltd. | Telephone transmitter amplifier |
DE2840250C2 (de) * | 1978-09-15 | 1983-01-20 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung für eine leitungsgespeiste Lautfernsprechstation |
US4251689A (en) * | 1979-07-09 | 1981-02-17 | Canadian Patents & Dev. Ltd. | Loudspeaker telephone apparatus |
JPS56501185A (de) * | 1979-08-20 | 1981-08-20 | ||
US4309574A (en) * | 1980-04-15 | 1982-01-05 | Gte Automatic Electric Labs Inc. | Electronic tone ringer |
DE3370427D1 (en) * | 1983-08-18 | 1987-04-23 | Itt | Telephone ringing circuit realisable as an integrated circuit |
FR2575625B1 (fr) * | 1984-12-27 | 1987-01-30 | Thomson Csf | Poste telephonique d'abonne a haut-parleur d'ecoute amplifiee avec reduction de gain en cas d'alimentation insuffisante |
CA1272318A (en) * | 1986-10-20 | 1990-07-31 | Kenji Takato | Integrated ringing circuit and a ring trip circuit for the same |
KR920001410B1 (ko) * | 1989-04-26 | 1992-02-13 | 삼성전자 주식회사 | 멜로디 톤 링회로 |
-
1992
- 1992-07-02 FR FR929208152A patent/FR2693335B1/fr not_active Expired - Fee Related
-
1993
- 1993-06-16 US US08/077,108 patent/US5323455A/en not_active Expired - Fee Related
- 1993-06-24 ES ES93401623T patent/ES2127260T3/es not_active Expired - Lifetime
- 1993-06-24 DE DE69322699T patent/DE69322699T2/de not_active Expired - Fee Related
- 1993-06-24 EP EP93401623A patent/EP0577474B1/de not_active Expired - Lifetime
- 1993-06-29 JP JP5158339A patent/JPH0831897B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0577474B1 (de) | 1998-12-23 |
US5323455A (en) | 1994-06-21 |
DE69322699T2 (de) | 1999-06-10 |
ES2127260T3 (es) | 1999-04-16 |
EP0577474A1 (de) | 1994-01-05 |
FR2693335A1 (fr) | 1994-01-07 |
JPH0831897B2 (ja) | 1996-03-27 |
JPH0690274A (ja) | 1994-03-29 |
FR2693335B1 (fr) | 1994-08-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |