CH562539A5 - - Google Patents

Info

Publication number
CH562539A5
CH562539A5 CH206273A CH206273A CH562539A5 CH 562539 A5 CH562539 A5 CH 562539A5 CH 206273 A CH206273 A CH 206273A CH 206273 A CH206273 A CH 206273A CH 562539 A5 CH562539 A5 CH 562539A5
Authority
CH
Switzerland
Application number
CH206273A
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
Publication of CH562539A5 publication Critical patent/CH562539A5/xx

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
CH206273A 1972-02-17 1973-02-14 CH562539A5 (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7205290A FR2172537A5 (xx) 1972-02-17 1972-02-17

Publications (1)

Publication Number Publication Date
CH562539A5 true CH562539A5 (xx) 1975-05-30

Family

ID=9093631

Family Applications (1)

Application Number Title Priority Date Filing Date
CH206273A CH562539A5 (xx) 1972-02-17 1973-02-14

Country Status (10)

Country Link
US (1) US3835258A (xx)
AR (1) AR195702A1 (xx)
BR (1) BR7301219D0 (xx)
CA (1) CA971689A (xx)
CH (1) CH562539A5 (xx)
DE (1) DE2307317A1 (xx)
ES (1) ES411687A1 (xx)
FR (1) FR2172537A5 (xx)
GB (1) GB1386523A (xx)
IT (1) IT979129B (xx)

Families Citing this family (5)

* 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
US4447673A (en) * 1977-12-27 1984-05-08 Stromberg-Carlson Corporation Ring trip apparatus for a line circuit connected to DCO switch
ES244069Y (es) * 1979-06-21 1980-04-01 Circuito detector de corriente.
US4447675A (en) * 1982-10-29 1984-05-08 Bell Telephone Laboratories, Incorporated Ring-trip detector
DE3473803D1 (en) * 1984-06-20 1988-10-06 Ibm Detection circuit for current varations

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312787A (en) * 1963-10-17 1967-04-04 Stromberg Carlson Corp Signaling system
DE1288626B (de) * 1966-05-28 1969-02-06 Nippon Electric Co Automatische Geraeteabschaltanordnung fuer einen Fernempfaenger
BE756517A (fr) * 1969-09-23 1971-03-01 Ericsson Telefon Ab L M Interrupteur pour signaux d'appel de centraux telephoniques automatiques
US3641552A (en) * 1970-02-18 1972-02-08 Int Assemblix Corp Centrally located access alarm system

Also Published As

Publication number Publication date
DE2307317A1 (de) 1973-08-30
FR2172537A5 (xx) 1973-09-28
AR195702A1 (es) 1973-10-31
ES411687A1 (es) 1976-01-01
CA971689A (en) 1975-07-22
GB1386523A (en) 1975-03-05
IT979129B (it) 1974-09-30
US3835258A (en) 1974-09-10
BR7301219D0 (pt) 1974-02-19

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Legal Events

Date Code Title Description
PL Patent ceased