ATE62782T1 - Rufabschaltungserkennungssystem. - Google Patents

Rufabschaltungserkennungssystem.

Info

Publication number
ATE62782T1
ATE62782T1 AT84100265T AT84100265T ATE62782T1 AT E62782 T1 ATE62782 T1 AT E62782T1 AT 84100265 T AT84100265 T AT 84100265T AT 84100265 T AT84100265 T AT 84100265T AT E62782 T1 ATE62782 T1 AT E62782T1
Authority
AT
Austria
Prior art keywords
trip
hook
wave form
comparator
ringing signal
Prior art date
Application number
AT84100265T
Other languages
English (en)
Inventor
Bruce G Littlefield
Original Assignee
Redcom Lab Inc
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 Redcom Lab Inc filed Critical Redcom Lab Inc
Application granted granted Critical
Publication of ATE62782T1 publication Critical patent/ATE62782T1/de

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)
  • Burglar Alarm Systems (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
AT84100265T 1983-01-13 1984-01-12 Rufabschaltungserkennungssystem. ATE62782T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/457,556 US4524245A (en) 1983-01-13 1983-01-13 Ring trip detection system
EP84100265A EP0116291B1 (de) 1983-01-13 1984-01-12 Rufabschaltungserkennungssystem

Publications (1)

Publication Number Publication Date
ATE62782T1 true ATE62782T1 (de) 1991-05-15

Family

ID=23817185

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84100265T ATE62782T1 (de) 1983-01-13 1984-01-12 Rufabschaltungserkennungssystem.

Country Status (5)

Country Link
US (1) US4524245A (de)
EP (1) EP0116291B1 (de)
JP (1) JPH0634491B2 (de)
AT (1) ATE62782T1 (de)
DE (1) DE3484442D1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633040A (en) * 1984-10-25 1986-12-30 Candela Electronics, Inc. Personal branch exchange system
US4731828A (en) * 1985-06-07 1988-03-15 Plessey Overseas Limited Ring trip detection in telecommunications exchanges
DE3545574A1 (de) * 1985-12-21 1987-07-02 Philips Patentverwaltung Verfahren und schaltungsanordnung zur auswertung der ausgangssignale von stromflussdetektoren in fernmeldeanlagen
US4805172A (en) * 1987-04-10 1989-02-14 Redeom Laboratories, Inc. Time division multiplex (TDM) switching system especially for pulse code modulated (PCM) telephony signals
US5233649A (en) * 1990-08-30 1993-08-03 Guerra Jr Roy H Telephone ringing module
IT1248549B (it) * 1991-06-25 1995-01-19 Sgs Thomson Microelectronics Complesso circuitale telefonico ad attacco d'utente elettronico con circuito per la rivelazione dello sgancio in fase di suoneria a numerodi componenti ridotto.
CA2146596C (en) * 1994-04-29 1999-09-21 Harry W. Moore, Iii Loop current detector
JP2891143B2 (ja) * 1995-07-28 1999-05-17 日本電気株式会社 リングトリップ回路
SE511917C2 (sv) * 1996-12-10 1999-12-13 Ericsson Telefon Ab L M Förfarande för anordning för att detektera en ringbortkoppling
US5987120A (en) * 1997-12-01 1999-11-16 Winbond Electronics Corp. Device for identifying line reversal/ringing signal of a telephone set
GB2447177A (en) * 2006-01-10 2008-09-03 Daihatsu Motor Co Ltd Air-fuel ratio judging method of internal combustion engine based on ion current

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941939A (en) * 1974-11-25 1976-03-02 International Telephone And Telegraph Corporation Electronic ring trip circuit
GB1479094A (en) * 1975-03-25 1977-07-06 Standard Telephones Cables Ltd Ring trip detectors
FR2470498A1 (fr) * 1979-11-21 1981-05-29 Trt Telecom Radio Electr Dispositif de detection du bouclage d'une ligne d'abonne pendant la sonnerie
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
US4447675A (en) * 1982-10-29 1984-05-08 Bell Telephone Laboratories, Incorporated Ring-trip detector

Also Published As

Publication number Publication date
JPH0634491B2 (ja) 1994-05-02
JPS6022857A (ja) 1985-02-05
EP0116291A2 (de) 1984-08-22
DE3484442D1 (de) 1991-05-23
US4524245A (en) 1985-06-18
EP0116291B1 (de) 1991-04-17
EP0116291A3 (en) 1986-08-20

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