BR9401517A - Processo para uso em arranjo de toque de telefone, processo e aparelho para fazer tocar telefone. - Google Patents

Processo para uso em arranjo de toque de telefone, processo e aparelho para fazer tocar telefone.

Info

Publication number
BR9401517A
BR9401517A BR9401517A BR9401517A BR9401517A BR 9401517 A BR9401517 A BR 9401517A BR 9401517 A BR9401517 A BR 9401517A BR 9401517 A BR9401517 A BR 9401517A BR 9401517 A BR9401517 A BR 9401517A
Authority
BR
Brazil
Prior art keywords
ringing
arrangement
ringing apparatus
ringing arrangement
Prior art date
Application number
BR9401517A
Other languages
English (en)
Inventor
Jeffrey Allan Rovik
Original Assignee
American Telephone & Telegraph
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 American Telephone & Telegraph filed Critical American Telephone & Telegraph
Publication of BR9401517A publication Critical patent/BR9401517A/pt

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
BR9401517A 1993-04-23 1994-04-18 Processo para uso em arranjo de toque de telefone, processo e aparelho para fazer tocar telefone. BR9401517A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/054,662 US5406623A (en) 1993-04-23 1993-04-23 Method and apparatus for ringing telephone stations

Publications (1)

Publication Number Publication Date
BR9401517A true BR9401517A (pt) 1994-11-01

Family

ID=21992665

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9401517A BR9401517A (pt) 1993-04-23 1994-04-18 Processo para uso em arranjo de toque de telefone, processo e aparelho para fazer tocar telefone.

Country Status (3)

Country Link
US (1) US5406623A (pt)
CN (1) CN1102923A (pt)
BR (1) BR9401517A (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0758830A (ja) * 1993-08-13 1995-03-03 Hashimoto Corp 呼出中断検出手段を有する電話端末装置
SE9400186D0 (sv) * 1994-01-21 1994-01-21 Ericsson Telefon Ab L M Förfarande i ett telekommunikationssystem
US5694465A (en) * 1995-03-16 1997-12-02 Advanced Micro Devices, Inc. Integrated ringer for short telephone lines
US5638440A (en) * 1995-06-07 1997-06-10 Advanced Micro Devices, Inc. Protection circuit for telephone systems
US5663878A (en) * 1996-03-21 1997-09-02 Unitrode Corporation Apparatus and method for generating a low frequency AC signal
US5640451A (en) * 1996-04-10 1997-06-17 Advanced Micro Devices Inc. Power cross detection using loop current and voltage
US6144840A (en) * 1998-04-13 2000-11-07 Advanced Micro Devices, Inc. Wireless telephone ring detection method for extended battery life
US6115469A (en) * 1998-08-25 2000-09-05 Unitrode Corporation Telephone line ring signal and DC power generator
US7239695B2 (en) * 2000-12-29 2007-07-03 Legerity, Inc. Method and apparatus for detecting line card threshold
US6954531B2 (en) * 2001-06-15 2005-10-11 Adc Dsl Systems, Inc. Software controlled ring voltage generator
CA2360117A1 (en) * 2001-10-24 2003-04-24 Catena Networks Canada Inc. The application of pots ringing signals without interfering with dsl signals
US6920220B2 (en) * 2001-11-14 2005-07-19 Texas Instruments Incorporated Pre-zero crossing signal generator for sinusoidal voltages with DC offsets such as telephone ring voltages
CA2411622A1 (en) * 2002-11-12 2004-05-12 Catena Networks Canada Inc. Silent ringing with reduced device sizes

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071709A (en) * 1976-12-16 1978-01-31 Gte Automatic Electric Laboratories Incorporated Line conditioning and transfer circuit
US4201897A (en) * 1978-11-24 1980-05-06 Gte Automatic Electric Laboratories Incorporated Ringing voltage transfer circuit
IT1128374B (it) * 1980-02-19 1986-05-28 Cselt Centro Studi Lab Telecom Circuito telefonico per la generazione del ritmo di suoneria ed il riconoscimento dello sgancio
JPS5746563A (en) * 1980-09-03 1982-03-17 Nec Corp Call signal generating device
JPS59122058A (ja) * 1982-11-29 1984-07-14 Fujitsu Ltd 呼出し信号送出回路
JPS59171352A (ja) * 1983-03-18 1984-09-27 Nec Corp リンギング信号送出回路
US4609782A (en) * 1983-12-27 1986-09-02 Motorola, Inc. Solid state signal insertion circuit and method for use in a telephony system or the like
IT1213306B (it) * 1986-07-29 1989-12-20 Sgs Microelettronica Spa Circuito telefonico, integrabile monoliticamente, per l'invio disegnali di suoneria in una linea telefonica d'utente e per il riconoscimento dello sgangio in fase di suoneria.
US5001748A (en) * 1989-08-21 1991-03-19 Siemens Transmission Systems, Inc. Ringing signal generator
US4955053A (en) * 1990-03-16 1990-09-04 Reliance Comm/Tec Corporation Solid state ringing switch
US5073924A (en) * 1990-05-01 1991-12-17 Frisby Kenneth G Telephone line noise filter apparatus
US5228081A (en) * 1990-10-18 1993-07-13 Ag Communication Systems Corporation Ringing signal control circuit for an enhanced subscriber line interface
US5260996A (en) * 1990-12-10 1993-11-09 Reliance Comm/Tec Corporation Current limited electronic ringing generator

Also Published As

Publication number Publication date
US5406623A (en) 1995-04-11
CN1102923A (zh) 1995-05-24

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Legal Events

Date Code Title Description
EE Request for examination
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FA8 Dismissal: dismissal - article 36, par. 1 of industrial property law