FR2446569A2 - Remote actuator for automatic telephone dialler - has normally closed switch interrupting current applied to subscriber line with photocoupler to sense signal and trigger dialler - Google Patents

Remote actuator for automatic telephone dialler - has normally closed switch interrupting current applied to subscriber line with photocoupler to sense signal and trigger dialler

Info

Publication number
FR2446569A2
FR2446569A2 FR7835016A FR7835016A FR2446569A2 FR 2446569 A2 FR2446569 A2 FR 2446569A2 FR 7835016 A FR7835016 A FR 7835016A FR 7835016 A FR7835016 A FR 7835016A FR 2446569 A2 FR2446569 A2 FR 2446569A2
Authority
FR
France
Prior art keywords
dialler
push
photocoupler
subscriber line
trigger
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
FR7835016A
Other languages
French (fr)
Other versions
FR2446569B2 (en
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.)
STRATEL
Original Assignee
STRATEL
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 STRATEL filed Critical STRATEL
Priority to FR7835016A priority Critical patent/FR2446569B2/en
Publication of FR2446569A2 publication Critical patent/FR2446569A2/en
Application granted granted Critical
Publication of FR2446569B2 publication Critical patent/FR2446569B2/en
Expired 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
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

The automatic telephone call device includes a push-to-break push-button switch connected in series with one of the subscriber line wires. A IMn resistor is connected across the subscriber end of the circuit to allow circulation of a current (Ir) of approximately 50 A, except when the push switch is open. A bridge rectifier circuit in the line rectifies the current and drives a photo diode light coupled to a photo detector, transistor which in turn is connected to an automatic dialing circuit common to a number of subscriber lines. Momentary pressing of the push-button by the subscriber interrupts the current. This is detected by the photo detector, which activates the dialing circuit to dial a preselected telephone number.
FR7835016A 1978-12-13 1978-12-13 TELEPHONE AUTOMATIC CALL DEVICE Expired FR2446569B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7835016A FR2446569B2 (en) 1978-12-13 1978-12-13 TELEPHONE AUTOMATIC CALL DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7835016A FR2446569B2 (en) 1978-12-13 1978-12-13 TELEPHONE AUTOMATIC CALL DEVICE

Publications (2)

Publication Number Publication Date
FR2446569A2 true FR2446569A2 (en) 1980-08-08
FR2446569B2 FR2446569B2 (en) 1987-01-23

Family

ID=9216031

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7835016A Expired FR2446569B2 (en) 1978-12-13 1978-12-13 TELEPHONE AUTOMATIC CALL DEVICE

Country Status (1)

Country Link
FR (1) FR2446569B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375583A (en) * 1978-01-03 1983-03-01 Institute For Science And Halacha Indirectly activatable telephone system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1466855A (en) * 1965-02-02 1967-01-20 Acec Emergency alert system
FR1559686A (en) * 1966-12-12 1969-03-14
FR2315207A1 (en) * 1973-06-18 1977-01-14 Int Teldata Corp TELEPHONE LINE SIGNALING DEVICE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1466855A (en) * 1965-02-02 1967-01-20 Acec Emergency alert system
FR1559686A (en) * 1966-12-12 1969-03-14
FR2315207A1 (en) * 1973-06-18 1977-01-14 Int Teldata Corp TELEPHONE LINE SIGNALING DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375583A (en) * 1978-01-03 1983-03-01 Institute For Science And Halacha Indirectly activatable telephone system

Also Published As

Publication number Publication date
FR2446569B2 (en) 1987-01-23

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Legal Events

Date Code Title Description
TP Transmission of property