IT970460B - Circuito di arresto di soneria - Google Patents

Circuito di arresto di soneria

Info

Publication number
IT970460B
IT970460B IT31613/72A IT3161372A IT970460B IT 970460 B IT970460 B IT 970460B IT 31613/72 A IT31613/72 A IT 31613/72A IT 3161372 A IT3161372 A IT 3161372A IT 970460 B IT970460 B IT 970460B
Authority
IT
Italy
Prior art keywords
stop circuit
ringer
ringer stop
circuit
stop
Prior art date
Application number
IT31613/72A
Other languages
English (en)
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Application granted granted Critical
Publication of IT970460B publication Critical patent/IT970460B/it

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)
IT31613/72A 1971-11-17 1972-11-14 Circuito di arresto di soneria IT970460B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7141072A FR2161191A5 (it) 1971-11-17 1971-11-17

Publications (1)

Publication Number Publication Date
IT970460B true IT970460B (it) 1974-04-10

Family

ID=9085882

Family Applications (1)

Application Number Title Priority Date Filing Date
IT31613/72A IT970460B (it) 1971-11-17 1972-11-14 Circuito di arresto di soneria

Country Status (11)

Country Link
US (1) US3865992A (it)
AR (1) AR195397A1 (it)
BE (1) BE791415A (it)
BR (1) BR7208047D0 (it)
CA (1) CA1001786A (it)
CH (1) CH570086A5 (it)
DE (1) DE2255752B2 (it)
ES (1) ES408651A1 (it)
FR (1) FR2161191A5 (it)
GB (1) GB1386138A (it)
IT (1) IT970460B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7301486A (it) * 1973-02-01 1974-08-05
US3941939A (en) * 1974-11-25 1976-03-02 International Telephone And Telegraph Corporation Electronic ring trip circuit
FR2296324A1 (fr) * 1974-12-27 1976-07-23 Ericsson Telefon Ab L M Dispositif d'appel perfectionne pour installations de telephonie
GB1529452A (en) * 1975-04-10 1978-10-18 Ansafone Ltd Detection of direct currents or voltages
JPS5356906A (en) * 1976-11-02 1978-05-23 Nec Corp Ring trip circuit
JPS5369504A (en) * 1976-12-02 1978-06-21 Fujitsu Ltd Ring trip circuit
JPS56119360U (it) * 1981-01-21 1981-09-11
US4447675A (en) * 1982-10-29 1984-05-08 Bell Telephone Laboratories, Incorporated Ring-trip detector
JP3700918B2 (ja) * 1999-06-14 2005-09-28 日本電気株式会社 加入者回路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341665A (en) * 1964-03-23 1967-09-12 Lorain Prod Corp Interrupter circuit for telephone systems
US3469036A (en) * 1966-08-31 1969-09-23 Robosonics Inc Telephone ringing signal detection means
US3746798A (en) * 1972-05-23 1973-07-17 Gte Automatic Electric Lab Inc Electronic ring trip circuit

Also Published As

Publication number Publication date
BR7208047D0 (pt) 1973-09-13
GB1386138A (en) 1975-03-05
DE2255752A1 (de) 1973-05-24
AR195397A1 (es) 1973-10-08
CA1001786A (en) 1976-12-14
BE791415A (fr) 1973-05-16
DE2255752B2 (de) 1981-02-12
US3865992A (en) 1975-02-11
FR2161191A5 (it) 1973-07-06
ES408651A1 (es) 1975-11-01
CH570086A5 (it) 1975-11-28

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