DE69322699T2 - Weckschaltung für einen Telefonapparat - Google Patents

Weckschaltung für einen Telefonapparat

Info

Publication number
DE69322699T2
DE69322699T2 DE69322699T DE69322699T DE69322699T2 DE 69322699 T2 DE69322699 T2 DE 69322699T2 DE 69322699 T DE69322699 T DE 69322699T DE 69322699 T DE69322699 T DE 69322699T DE 69322699 T2 DE69322699 T2 DE 69322699T2
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
Application number
DE69322699T
Other languages
English (en)
Other versions
DE69322699D1 (de
Inventor
Corre Jean-Luc Le
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks France SAS
Original Assignee
Matra Nortel Communications SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matra Nortel Communications SAS filed Critical Matra Nortel Communications SAS
Publication of DE69322699D1 publication Critical patent/DE69322699D1/de
Application granted granted Critical
Publication of DE69322699T2 publication Critical patent/DE69322699T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)
  • Telephone Function (AREA)
DE69322699T 1992-07-02 1993-06-24 Weckschaltung für einen Telefonapparat Expired - Fee Related DE69322699T2 (de)

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 DE69322699D1 (de) 1999-02-04
DE69322699T2 true 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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
DE3049811T1 (de) * 1979-08-20 1982-02-25 Western Electric Co Electronic tone ringer
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
AU593951B2 (en) * 1986-10-20 1990-02-22 Fujitsu Limited An integrated ringing circuit and a ring trip circuit for the same
KR920001410B1 (ko) * 1989-04-26 1992-02-13 삼성전자 주식회사 멜로디 톤 링회로

Also Published As

Publication number Publication date
DE69322699D1 (de) 1999-02-04
EP0577474B1 (de) 1998-12-23
FR2693335A1 (fr) 1994-01-07
ES2127260T3 (es) 1999-04-16
EP0577474A1 (de) 1994-01-05
FR2693335B1 (fr) 1994-08-05
US5323455A (en) 1994-06-21
JPH0690274A (ja) 1994-03-29
JPH0831897B2 (ja) 1996-03-27

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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