FR1236546A - Perfectionnement aux sonneries téléphoniques - Google Patents

Perfectionnement aux sonneries téléphoniques

Info

Publication number
FR1236546A
FR1236546A FR796887A FR796887A FR1236546A FR 1236546 A FR1236546 A FR 1236546A FR 796887 A FR796887 A FR 796887A FR 796887 A FR796887 A FR 796887A FR 1236546 A FR1236546 A FR 1236546A
Authority
FR
France
Prior art keywords
improvement
telephone ringing
ringing
telephone
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.)
Expired
Application number
FR796887A
Other languages
English (en)
Inventor
Francois Viard
Jacques Duprez
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 Ericsson SA
Original Assignee
Societe des Telephones Ericsson SA
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 Ericsson SA filed Critical Societe des Telephones Ericsson SA
Priority to FR796887A priority Critical patent/FR1236546A/fr
Application granted granted Critical
Publication of FR1236546A publication Critical patent/FR1236546A/fr
Expired 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)
FR796887A 1959-06-08 1959-06-08 Perfectionnement aux sonneries téléphoniques Expired FR1236546A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR796887A FR1236546A (fr) 1959-06-08 1959-06-08 Perfectionnement aux sonneries téléphoniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR796887A FR1236546A (fr) 1959-06-08 1959-06-08 Perfectionnement aux sonneries téléphoniques

Publications (1)

Publication Number Publication Date
FR1236546A true FR1236546A (fr) 1960-07-22

Family

ID=8715755

Family Applications (1)

Application Number Title Priority Date Filing Date
FR796887A Expired FR1236546A (fr) 1959-06-08 1959-06-08 Perfectionnement aux sonneries téléphoniques

Country Status (1)

Country Link
FR (1) FR1236546A (fr)

Similar Documents

Publication Publication Date Title
CH468040A (de) Digitalrechengerät
CH408124A (it) Apparecchio telefonico
AT219298B (de) Mikrophonanordnung
CH400255A (de) Telephonanlage
CH381280A (de) Telephonapparat
FR1260478A (fr) Microphone électrodynamique
CH393435A (de) Fernsprechstation
FR1275738A (fr) émetteur d'appels téléphoniques
BE596278A (nl) Telefoonstelsel
FR1214554A (fr) Perfectionnement aux ensembles bas-slip
DK97830C (da) Telefonapparat.
CH382805A (de) Telephonapparat
CH405432A (de) Fernsprechstation
CH399543A (de) Fernsprechstation
FI33653A (fi) Puhelinkone
ES75469Y (es) Pupitre telefónico
CA22417S (en) Telephone set
FR1252835A (fr) Calculateur numérique
ES74881Y (es) Porta-auricular telefónico
FR1252089A (fr) Amplificateur téléphonique
FI33344A (fi) Telefonregister
FI33567A (fi) Telefonapparat
CA23602S (en) Telephone booth
AT224709B (de) Fernsprechapparat
BE588949A (nl) Gemeenschappelijke telefoonlijn.