FR2437121B1 - - Google Patents

Info

Publication number
FR2437121B1
FR2437121B1 FR7826823A FR7826823A FR2437121B1 FR 2437121 B1 FR2437121 B1 FR 2437121B1 FR 7826823 A FR7826823 A FR 7826823A FR 7826823 A FR7826823 A FR 7826823A FR 2437121 B1 FR2437121 B1 FR 2437121B1
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
FR7826823A
Other versions
FR2437121A1 (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.)
Societe des Telephones Thomson Ericsson
Original Assignee
Societe des Telephones Thomson Ericsson
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 Societe des Telephones Thomson Ericsson filed Critical Societe des Telephones Thomson Ericsson
Priority to FR7826823A priority Critical patent/FR2437121A1/fr
Priority to US06/075,721 priority patent/US4306118A/en
Priority to ES484231A priority patent/ES484231A1/es
Publication of FR2437121A1 publication Critical patent/FR2437121A1/fr
Application granted granted Critical
Publication of FR2437121B1 publication Critical patent/FR2437121B1/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR7826823A 1978-09-19 1978-09-19 Nouveau dispositif d'injection de sonnerie dans les postes telephoniques Granted FR2437121A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7826823A FR2437121A1 (fr) 1978-09-19 1978-09-19 Nouveau dispositif d'injection de sonnerie dans les postes telephoniques
US06/075,721 US4306118A (en) 1978-09-19 1979-09-14 Telephone set ringing current injection device
ES484231A ES484231A1 (es) 1978-09-19 1979-09-18 Dispositivo de inyeccion de timbre en un equipo de linea de aparato telefonico

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7826823A FR2437121A1 (fr) 1978-09-19 1978-09-19 Nouveau dispositif d'injection de sonnerie dans les postes telephoniques

Publications (2)

Publication Number Publication Date
FR2437121A1 FR2437121A1 (fr) 1980-04-18
FR2437121B1 true FR2437121B1 (fr) 1982-01-15

Family

ID=9212774

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7826823A Granted FR2437121A1 (fr) 1978-09-19 1978-09-19 Nouveau dispositif d'injection de sonnerie dans les postes telephoniques

Country Status (3)

Country Link
US (1) US4306118A (fr)
ES (1) ES484231A1 (fr)
FR (1) FR2437121A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001635A1 (fr) * 1980-10-28 1982-05-13 Lyne Francis T Ameliorations apportees a des circuits d'interface de ligne ou relatives a ceux-ci
US4524246A (en) * 1982-07-07 1985-06-18 Harris Corporation SLIC II--common-mode current rejection
FR2549668B1 (fr) * 1983-07-22 1985-10-04 Thomson Csf Mat Tel Circuit injecteur de sonnerie pour poste telephonique d'abonne
US4598173A (en) * 1984-10-15 1986-07-01 Itt Corporation Interface circuit for a subscriber line circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829619A (en) * 1972-12-29 1974-08-13 Stromberg Carlson Corp Telephone ring trip circuit
US3917909A (en) * 1974-03-07 1975-11-04 Gte Automatic Electric Lab Inc Ring injection method for transformer coupled telephone
CH600714A5 (fr) * 1974-09-24 1978-06-30 Siemens Ag Albis
FR2366756A1 (fr) * 1976-09-30 1978-04-28 Labo Cent Telecommunicat Circuit electronique d'injection de sonnerie
FR2368845A1 (fr) * 1976-10-19 1978-05-19 Ericsson Telefon Ab L M Dispositif d'appel telephonique

Also Published As

Publication number Publication date
ES484231A1 (es) 1980-04-16
US4306118A (en) 1981-12-15
FR2437121A1 (fr) 1980-04-18

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