CA1001786A - Ring-trip circuit - Google Patents

Ring-trip circuit

Info

Publication number
CA1001786A
CA1001786A CA156,654A CA156654A CA1001786A CA 1001786 A CA1001786 A CA 1001786A CA 156654 A CA156654 A CA 156654A CA 1001786 A CA1001786 A CA 1001786A
Authority
CA
Canada
Prior art keywords
ring
trip circuit
trip
circuit
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
Application number
CA156,654A
Other languages
English (en)
Other versions
CA156654S (en
Inventor
Lucien R. Bouty
Gerard M. Le Cardonnel
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.)
ITT Canada Ltd
Original Assignee
ITT Canada Ltd
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 ITT Canada Ltd filed Critical ITT Canada Ltd
Application granted granted Critical
Publication of CA1001786A publication Critical patent/CA1001786A/en
Expired 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)
CA156,654A 1971-11-17 1972-11-16 Ring-trip circuit Expired CA1001786A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CA1001786A true CA1001786A (en) 1976-12-14

Family

ID=9085882

Family Applications (1)

Application Number Title Priority Date Filing Date
CA156,654A Expired CA1001786A (en) 1971-11-17 1972-11-16 Ring-trip circuit

Country Status (11)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7301486A (de) * 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 (de) * 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
DE2255752B2 (de) 1981-02-12
BR7208047D0 (pt) 1973-09-13
GB1386138A (en) 1975-03-05
CH570086A5 (de) 1975-11-28
FR2161191A5 (de) 1973-07-06
BE791415A (fr) 1973-05-16
IT970460B (it) 1974-04-10
ES408651A1 (es) 1975-11-01
AR195397A1 (es) 1973-10-08
DE2255752A1 (de) 1973-05-24
US3865992A (en) 1975-02-11

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