DE69532885D1 - Störungsklingelunterdrückungsvorrichtung, insbesondere für Zusatzklingeln in Stecktelephonsystemen - Google Patents

Störungsklingelunterdrückungsvorrichtung, insbesondere für Zusatzklingeln in Stecktelephonsystemen

Info

Publication number
DE69532885D1
DE69532885D1 DE69532885T DE69532885T DE69532885D1 DE 69532885 D1 DE69532885 D1 DE 69532885D1 DE 69532885 T DE69532885 T DE 69532885T DE 69532885 T DE69532885 T DE 69532885T DE 69532885 D1 DE69532885 D1 DE 69532885D1
Authority
DE
Germany
Prior art keywords
bell
plug
interference
suppression device
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.)
Expired - Lifetime
Application number
DE69532885T
Other languages
English (en)
Inventor
Pietro Consiglio
Carlo Antonini
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.)
STMicroelectronics SRL
Original Assignee
STMicroelectronics SRL
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 STMicroelectronics SRL filed Critical STMicroelectronics SRL
Application granted granted Critical
Publication of DE69532885D1 publication Critical patent/DE69532885D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
DE69532885T 1995-07-28 1995-07-28 Störungsklingelunterdrückungsvorrichtung, insbesondere für Zusatzklingeln in Stecktelephonsystemen Expired - Lifetime DE69532885D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95830338A EP0756409B1 (de) 1995-07-28 1995-07-28 Störungsklingelunterdrückungsvorrichtung, insbesondere für Zusatzklingeln in Stecktelephonsystemen

Publications (1)

Publication Number Publication Date
DE69532885D1 true DE69532885D1 (de) 2004-05-19

Family

ID=8221985

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69532885T Expired - Lifetime DE69532885D1 (de) 1995-07-28 1995-07-28 Störungsklingelunterdrückungsvorrichtung, insbesondere für Zusatzklingeln in Stecktelephonsystemen

Country Status (3)

Country Link
US (1) US5818923A (de)
EP (1) EP0756409B1 (de)
DE (1) DE69532885D1 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6442213B1 (en) 1997-04-22 2002-08-27 Silicon Laboratories Inc. Digital isolation system with hybrid circuit in ADC calibration loop
US6137827A (en) 1997-04-22 2000-10-24 Silicon Laboratories, Inc. Isolation system with digital communication across a capacitive barrier
US6389134B1 (en) 1997-04-22 2002-05-14 Silicon Laboratories, Inc. Call progress monitor circuitry and method for a communication system
US6442271B1 (en) 1997-04-22 2002-08-27 Silicon Laboratories, Inc. Digital isolation system with low power mode
US6144326A (en) 1997-04-22 2000-11-07 Silicon Laboratories, Inc. Digital isolation system with ADC offset calibration
US6198816B1 (en) * 1997-04-22 2001-03-06 Silicon Laboratories, Inc. Capacitively coupled ring detector with power provided across isolation barrier
US6430229B1 (en) 1997-04-22 2002-08-06 Silicon Laboratories Inc. Capacitive isolation system with digital communication and power transfer
US6298133B1 (en) 1997-04-22 2001-10-02 Silicon Laboratories, Inc. Telephone line interface architecture using ringer inputs for caller ID data
US6167134A (en) 1997-04-22 2000-12-26 Silicon Laboratories, Inc. External resistor and method to minimize power dissipation in DC holding circuitry for a communication system
US6498825B1 (en) 1997-04-22 2002-12-24 Silicon Laboratories Inc. Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with programmable current limiting
US6385235B1 (en) 1997-04-22 2002-05-07 Silicon Laboratories, Inc. Direct digital access arrangement circuitry and method for connecting to phone lines
US6587560B1 (en) 1997-04-22 2003-07-01 Silicon Laboratories Inc. Low voltage circuits powered by the phone line
US6408034B1 (en) 1997-04-22 2002-06-18 Silicon Laboratories, Inc. Framed delta sigma data with unlikely delta sigma data patterns
US5870046A (en) 1997-04-22 1999-02-09 Silicon Laboratories Inc. Analog isolation system with digital communication across a capacitive barrier
US6456712B1 (en) 1997-04-22 2002-09-24 Silicon Laboratories Inc. Separation of ring detection functions across isolation barrier for minimum power
US6307891B1 (en) 1997-04-22 2001-10-23 Silicon Laboratories, Inc. Method and apparatus for freezing a communication link during a disruptive event
US6359983B1 (en) 1997-04-22 2002-03-19 Silicon Laboratories, Inc. Digital isolation system with data scrambling
US6480602B1 (en) 1997-04-22 2002-11-12 Silicon Laboratories, Inc. Ring-detect interface circuitry and method for a communication system
US6504864B1 (en) 1997-04-22 2003-01-07 Silicon Laboratories Inc. Digital access arrangement circuitry and method for connecting to phone lines having a second order DC holding circuit
US6289070B1 (en) 1997-04-22 2001-09-11 Silicon Laboratories, Inc. Digital isolation system with ADC offset calibration including coarse offset
US6516024B1 (en) 1997-04-22 2003-02-04 Silicon Laboratories Inc. Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with low distortion and current limiting
US6697471B1 (en) * 1999-05-31 2004-02-24 Thomson Licensing S.A. Extension phone off-hook check for Type 2 Caller ID reception in a telephone adjunct device

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2095681A (en) * 1937-10-12 Electrical signal device and system
US626382A (en) * 1899-06-06 Auxiliary electric alarm for telephone call-bells
IT1071838B (it) * 1976-11-12 1985-04-10 Cselt Centro Studi Lab Telecom Soppressore di impulsi di suoneria indesiderati per apparecchi telefonici
US4163873A (en) * 1977-08-09 1979-08-07 Telephonic Equipment Corporation Telephone solid state ringer
US4367376A (en) * 1980-09-17 1983-01-04 Proctor & Associates Co. Electronic telephone ringer including anti-bell tap provisions
US4431871A (en) * 1982-01-21 1984-02-14 Northern Telecom Limited Solid state relay
DE3504243A1 (de) * 1985-02-08 1986-08-14 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren und schaltungsanordnung zur erzeugung eines akustischen rufsignals in teilnehmerendstellen von fernmeldeanlagen
US4727572A (en) * 1986-10-06 1988-02-23 Whitney W W Telephone annunciator with low battery indication
US4922529A (en) * 1988-12-06 1990-05-01 Kiel David J Automatic hangup apparatus for restoring service to off-hook telephones
US4975949A (en) * 1989-06-15 1990-12-04 Plantronics, Inc. Electronic headset telephone
JPH03196744A (ja) * 1989-11-06 1991-08-28 Kiyoshi Hama 電話端末用付属リンガー装置
IT1254795B (it) * 1992-02-17 1995-10-11 St Microelectronics Srl Dispositivo di soppressione di retroazione acustica particolarmente per suonerie ausiliarie in impianti telefonici a spina.
IT1254796B (it) * 1992-02-17 1995-10-11 St Microelectronics Srl Dispositivo di limitazione della tensione operativa per interruttori meccanici in telefonia.
EP0613275B1 (de) * 1992-12-30 2001-05-09 STMicroelectronics S.r.l. Treiberschnittstelle für einen telephonischen Leitungschalter zum Einschalten einer Sprechschaltung unabhängig von der Leistungspolarität
US5602911A (en) * 1993-05-10 1997-02-11 Siemens Business Communication Systems, Inc. System and method for eliminating bell tap on analog telephones
US5606593A (en) * 1994-11-18 1997-02-25 Lucent Technologies Inc. Apparatus and method for automatically returning a telephone set to an on-hook condition

Also Published As

Publication number Publication date
US5818923A (en) 1998-10-06
EP0756409B1 (de) 2004-04-14
EP0756409A1 (de) 1997-01-29

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