FR2284235A1 - Procede d'utilisation de reseaux telephoniques publics d'abonnes - Google Patents

Procede d'utilisation de reseaux telephoniques publics d'abonnes

Info

Publication number
FR2284235A1
FR2284235A1 FR7429959A FR7429959A FR2284235A1 FR 2284235 A1 FR2284235 A1 FR 2284235A1 FR 7429959 A FR7429959 A FR 7429959A FR 7429959 A FR7429959 A FR 7429959A FR 2284235 A1 FR2284235 A1 FR 2284235A1
Authority
FR
France
Prior art keywords
telephone
public telephone
connects
unlocking control
telephone system
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.)
Granted
Application number
FR7429959A
Other languages
English (en)
French (fr)
Other versions
FR2284235B1 (enExample
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7429959A priority Critical patent/FR2284235A1/fr
Publication of FR2284235A1 publication Critical patent/FR2284235A1/fr
Application granted granted Critical
Publication of FR2284235B1 publication Critical patent/FR2284235B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Lock And Its Accessories (AREA)
FR7429959A 1974-09-03 1974-09-03 Procede d'utilisation de reseaux telephoniques publics d'abonnes Granted FR2284235A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7429959A FR2284235A1 (fr) 1974-09-03 1974-09-03 Procede d'utilisation de reseaux telephoniques publics d'abonnes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7429959A FR2284235A1 (fr) 1974-09-03 1974-09-03 Procede d'utilisation de reseaux telephoniques publics d'abonnes

Publications (2)

Publication Number Publication Date
FR2284235A1 true FR2284235A1 (fr) 1976-04-02
FR2284235B1 FR2284235B1 (enExample) 1981-12-31

Family

ID=9142768

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7429959A Granted FR2284235A1 (fr) 1974-09-03 1974-09-03 Procede d'utilisation de reseaux telephoniques publics d'abonnes

Country Status (1)

Country Link
FR (1) FR2284235A1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2126532A1 (es) * 1997-08-06 1999-03-16 Jimenez Pedro Ojeda Sistema de portero automatico via linea telefonica.
EP0709998A3 (fr) * 1994-10-24 1999-10-20 Javier Gorrochategui Grajirena Système de communication à deux fils pour interphones

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709998A3 (fr) * 1994-10-24 1999-10-20 Javier Gorrochategui Grajirena Système de communication à deux fils pour interphones
ES2126532A1 (es) * 1997-08-06 1999-03-16 Jimenez Pedro Ojeda Sistema de portero automatico via linea telefonica.

Also Published As

Publication number Publication date
FR2284235B1 (enExample) 1981-12-31

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