FR2368185A1 - Circuit d'appel acoustique pour appareil telephonique - Google Patents

Circuit d'appel acoustique pour appareil telephonique

Info

Publication number
FR2368185A1
FR2368185A1 FR7729665A FR7729665A FR2368185A1 FR 2368185 A1 FR2368185 A1 FR 2368185A1 FR 7729665 A FR7729665 A FR 7729665A FR 7729665 A FR7729665 A FR 7729665A FR 2368185 A1 FR2368185 A1 FR 2368185A1
Authority
FR
France
Prior art keywords
telephone devices
call circuit
acoustic call
circuit
acoustic
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.)
Withdrawn
Application number
FR7729665A
Other languages
English (en)
French (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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of FR2368185A1 publication Critical patent/FR2368185A1/fr
Withdrawn legal-status Critical Current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
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
FR7729665A 1976-10-14 1977-10-03 Circuit d'appel acoustique pour appareil telephonique Withdrawn FR2368185A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7611406A SE397161B (sv) 1976-10-14 1976-10-14 Anordning vid akustiska signalorgan i telefonapparater

Publications (1)

Publication Number Publication Date
FR2368185A1 true FR2368185A1 (fr) 1978-05-12

Family

ID=20329130

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7729665A Withdrawn FR2368185A1 (fr) 1976-10-14 1977-10-03 Circuit d'appel acoustique pour appareil telephonique

Country Status (10)

Country Link
BE (1) BE859191A (da)
CH (1) CH623694A5 (da)
DE (1) DE2742748A1 (da)
DK (1) DK455577A (da)
ES (1) ES463052A1 (da)
FR (1) FR2368185A1 (da)
IT (1) IT1087777B (da)
NL (1) NL7710303A (da)
NO (1) NO139716C (da)
SE (1) SE397161B (da)

Also Published As

Publication number Publication date
DE2742748A1 (de) 1978-04-20
SE397161B (sv) 1977-10-17
NL7710303A (nl) 1978-04-18
CH623694A5 (en) 1981-06-15
NO139716B (no) 1979-01-15
ES463052A1 (es) 1978-07-01
BE859191A (fr) 1978-01-16
IT1087777B (it) 1985-06-04
NO773519L (no) 1978-04-17
DK455577A (da) 1978-04-15
NO139716C (no) 1979-05-02

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Legal Events

Date Code Title Description
ST Notification of lapse