FR90647E - Tonalité de sonnerie téléphonique - Google Patents

Tonalité de sonnerie téléphonique

Info

Publication number
FR90647E
FR90647E FR68449A FR68449A FR90647E FR 90647 E FR90647 E FR 90647E FR 68449 A FR68449 A FR 68449A FR 68449 A FR68449 A FR 68449A FR 90647 E FR90647 E FR 90647E
Authority
FR
France
Prior art keywords
ring tone
telephone ring
telephone
tone
ring
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
FR68449A
Other languages
English (en)
Inventor
John Frederick Why
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 GB46851/63A external-priority patent/GB986310A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR68449A priority Critical patent/FR90647E/fr
Application granted granted Critical
Publication of FR90647E publication Critical patent/FR90647E/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)
FR68449A 1963-11-27 1966-07-06 Tonalité de sonnerie téléphonique Expired FR90647E (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR68449A FR90647E (fr) 1963-11-27 1966-07-06 Tonalité de sonnerie téléphonique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB46851/63A GB986310A (en) 1963-11-27 1963-11-27 Telephone tone ringer
FR68449A FR90647E (fr) 1963-11-27 1966-07-06 Tonalité de sonnerie téléphonique

Publications (1)

Publication Number Publication Date
FR90647E true FR90647E (fr) 1968-01-19

Family

ID=26171833

Family Applications (1)

Application Number Title Priority Date Filing Date
FR68449A Expired FR90647E (fr) 1963-11-27 1966-07-06 Tonalité de sonnerie téléphonique

Country Status (1)

Country Link
FR (1) FR90647E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469840A1 (fr) * 1979-11-12 1981-05-22 Astier Michel Dispositif de sonnerie a intensite variable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469840A1 (fr) * 1979-11-12 1981-05-22 Astier Michel Dispositif de sonnerie a intensite variable

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