FR2290805B1 - - Google Patents

Info

Publication number
FR2290805B1
FR2290805B1 FR7533546A FR7533546A FR2290805B1 FR 2290805 B1 FR2290805 B1 FR 2290805B1 FR 7533546 A FR7533546 A FR 7533546A FR 7533546 A FR7533546 A FR 7533546A FR 2290805 B1 FR2290805 B1 FR 2290805B1
Authority
FR
France
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
FR7533546A
Other languages
French (fr)
Other versions
FR2290805A1 (fr
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.)
AT&T Corp
Original Assignee
Western Electric Co 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
Priority claimed from US05/521,734 external-priority patent/US3978293A/en
Priority claimed from US05/521,651 external-priority patent/US3978292A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of FR2290805A1 publication Critical patent/FR2290805A1/fr
Application granted granted Critical
Publication of FR2290805B1 publication Critical patent/FR2290805B1/fr
Granted 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)
  • Exchange Systems With Centralized Control (AREA)
  • Plural Heterocyclic Compounds (AREA)
FR7533546A 1974-11-07 1975-11-03 Ensemble de circuits de commande de sonnerie Granted FR2290805A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/521,734 US3978293A (en) 1974-11-07 1974-11-07 Ringing control circuitry with shared ringing loop current detector
US05/521,651 US3978292A (en) 1974-11-07 1974-11-07 Ringing control circuitry with shared ringing loop current detector

Publications (2)

Publication Number Publication Date
FR2290805A1 FR2290805A1 (fr) 1976-06-04
FR2290805B1 true FR2290805B1 (sv) 1981-02-06

Family

ID=27060535

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7533546A Granted FR2290805A1 (fr) 1974-11-07 1975-11-03 Ensemble de circuits de commande de sonnerie

Country Status (9)

Country Link
JP (1) JPS5169906A (sv)
BR (1) BR7507193A (sv)
DE (1) DE2549469C2 (sv)
ES (1) ES442422A1 (sv)
FR (1) FR2290805A1 (sv)
GB (1) GB1515720A (sv)
IT (1) IT1048758B (sv)
NL (1) NL7513016A (sv)
SE (1) SE7512060L (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2755639C2 (de) * 1977-12-14 1985-06-05 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Schaltungsanordnung zur logischen Verarbeitung von Teilnehmer-Kriterien in Fernmelde-, insbesondere Fernsprechvermittlungsanlagen
FR2451682A1 (fr) * 1979-03-12 1980-10-10 Jeumont Schneider Dispositif d'appel pour installation telephonique automatique d'abonne avec postes supplementaires
JPS56119565A (en) * 1981-02-12 1981-09-19 Hitachi Ltd Signal processing device in subscriber's circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720793A (en) * 1971-09-01 1973-03-13 Bell Telephone Labor Inc Supervisory circuit arrangement for telephone subscriber lines
FR2171594A5 (sv) * 1972-02-08 1973-09-21 Constr Telephoniques
FR2172537A5 (sv) * 1972-02-17 1973-09-28 Constr Telephoniques

Also Published As

Publication number Publication date
BR7507193A (pt) 1976-08-10
SE7512060L (sv) 1976-05-10
JPS571171B2 (sv) 1982-01-09
FR2290805A1 (fr) 1976-06-04
GB1515720A (en) 1978-06-28
IT1048758B (it) 1980-12-20
ES442422A1 (es) 1977-08-16
DE2549469C2 (de) 1984-05-17
JPS5169906A (ja) 1976-06-17
DE2549469A1 (de) 1976-05-13
NL7513016A (nl) 1976-05-11

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