FR2466923B1 - - Google Patents

Info

Publication number
FR2466923B1
FR2466923B1 FR7924809A FR7924809A FR2466923B1 FR 2466923 B1 FR2466923 B1 FR 2466923B1 FR 7924809 A FR7924809 A FR 7924809A FR 7924809 A FR7924809 A FR 7924809A FR 2466923 B1 FR2466923 B1 FR 2466923B1
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
FR7924809A
Other languages
French (fr)
Other versions
FR2466923A1 (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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Priority to FR7924809A priority Critical patent/FR2466923A1/fr
Publication of FR2466923A1 publication Critical patent/FR2466923A1/fr
Application granted granted Critical
Publication of FR2466923B1 publication Critical patent/FR2466923B1/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
    • H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR7924809A 1979-10-05 1979-10-05 Circuit de generation et d'injection de sonnerie Granted FR2466923A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7924809A FR2466923A1 (fr) 1979-10-05 1979-10-05 Circuit de generation et d'injection de sonnerie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7924809A FR2466923A1 (fr) 1979-10-05 1979-10-05 Circuit de generation et d'injection de sonnerie

Publications (2)

Publication Number Publication Date
FR2466923A1 FR2466923A1 (fr) 1981-04-10
FR2466923B1 true FR2466923B1 (enExample) 1982-12-31

Family

ID=9230347

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7924809A Granted FR2466923A1 (fr) 1979-10-05 1979-10-05 Circuit de generation et d'injection de sonnerie

Country Status (1)

Country Link
FR (1) FR2466923A1 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001635A1 (en) * 1980-10-28 1982-05-13 Lyne Francis T Improvements in or relating to line interface circuits
CA1197641A (en) * 1983-08-26 1985-12-03 David E. Dodds Telephone line interface circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211896A (en) * 1977-10-17 1980-07-08 Telecommunications Radioelectrique Et Telephoniques T.R.T. Subscriber's circuit with a symmetrical amplifier
US4137570A (en) * 1977-10-31 1979-01-30 Exxon Research & Engineering Co. Waveform synthesizer

Also Published As

Publication number Publication date
FR2466923A1 (fr) 1981-04-10

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Legal Events

Date Code Title Description
ST Notification of lapse