JPS4834405A - - Google Patents

Info

Publication number
JPS4834405A
JPS4834405A JP47085909A JP8590972A JPS4834405A JP S4834405 A JPS4834405 A JP S4834405A JP 47085909 A JP47085909 A JP 47085909A JP 8590972 A JP8590972 A JP 8590972A JP S4834405 A JPS4834405 A JP S4834405A
Authority
JP
Japan
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.)
Pending
Application number
JP47085909A
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 filed Critical
Publication of JPS4834405A publication Critical patent/JPS4834405A/ja
Pending 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
    • H04M19/026—Arrangements for interrupting the ringing current

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
JP47085909A 1971-09-01 1972-08-29 Pending JPS4834405A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17682871A 1971-09-01 1971-09-01

Publications (1)

Publication Number Publication Date
JPS4834405A true JPS4834405A (ja) 1973-05-18

Family

ID=22646015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP47085909A Pending JPS4834405A (ja) 1971-09-01 1972-08-29

Country Status (10)

Country Link
US (1) US3720793A (ja)
JP (1) JPS4834405A (ja)
BE (1) BE788119A (ja)
CA (1) CA944878A (ja)
DE (1) DE2242547A1 (ja)
ES (1) ES406574A1 (ja)
FR (1) FR2152020A5 (ja)
GB (1) GB1398170A (ja)
IT (1) IT965154B (ja)
NL (1) NL7211698A (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7512060L (sv) * 1974-11-07 1976-05-10 Western Electric Co Anordning for att i en telekommunikationsanleggning patrycka och detektera ringsignaler over en anropad linje
US4071709A (en) * 1976-12-16 1978-01-31 Gte Automatic Electric Laboratories Incorporated Line conditioning and transfer circuit
CA1114536A (en) * 1978-12-11 1981-12-15 William B. Kiss Ringing generator
US4234762A (en) * 1978-12-29 1980-11-18 Bell Telephone Laboratories, Incorporated Ring trip detector circuit
FR2451682A1 (fr) * 1979-03-12 1980-10-10 Jeumont Schneider Dispositif d'appel pour installation telephonique automatique d'abonne avec postes supplementaires
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
FR2501442B1 (fr) * 1980-12-29 1987-07-17 Thomson Csf Procede et dispositif de detection du decrochage d'un combine telephonique
DE3814661A1 (de) * 1988-04-29 1989-11-09 Nixdorf Computer Ag Einrichtung zum schalten der rufwechselspannung an teilnehmeranschlussleitungen

Also Published As

Publication number Publication date
GB1398170A (en) 1975-06-18
DE2242547A1 (de) 1973-04-26
BE788119A (fr) 1972-12-18
CA944878A (en) 1974-04-02
IT965154B (it) 1974-01-31
US3720793A (en) 1973-03-13
ES406574A1 (es) 1975-10-01
NL7211698A (ja) 1973-03-05
FR2152020A5 (ja) 1973-04-20

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