JPS63198250U - - Google Patents

Info

Publication number
JPS63198250U
JPS63198250U JP1987088932U JP8893287U JPS63198250U JP S63198250 U JPS63198250 U JP S63198250U JP 1987088932 U JP1987088932 U JP 1987088932U JP 8893287 U JP8893287 U JP 8893287U JP S63198250 U JPS63198250 U JP S63198250U
Authority
JP
Japan
Prior art keywords
answering machine
capacitor
photocoupler
control circuit
hook
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
JP1987088932U
Other languages
English (en)
Japanese (ja)
Other versions
JPH054362Y2 (en]
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 filed Critical
Priority to JP1987088932U priority Critical patent/JPH054362Y2/ja
Priority to US07/081,666 priority patent/US4833703A/en
Publication of JPS63198250U publication Critical patent/JPS63198250U/ja
Application granted granted Critical
Publication of JPH054362Y2 publication Critical patent/JPH054362Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/654—Telephone line monitoring circuits therefor, e.g. ring detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP1987088932U 1987-06-09 1987-06-09 Expired - Lifetime JPH054362Y2 (en])

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1987088932U JPH054362Y2 (en]) 1987-06-09 1987-06-09
US07/081,666 US4833703A (en) 1987-06-09 1987-08-04 On-hook control circuit for answering machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987088932U JPH054362Y2 (en]) 1987-06-09 1987-06-09

Publications (2)

Publication Number Publication Date
JPS63198250U true JPS63198250U (en]) 1988-12-20
JPH054362Y2 JPH054362Y2 (en]) 1993-02-03

Family

ID=13956669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987088932U Expired - Lifetime JPH054362Y2 (en]) 1987-06-09 1987-06-09

Country Status (2)

Country Link
US (1) US4833703A (en])
JP (1) JPH054362Y2 (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0556138A (ja) * 1991-01-07 1993-03-05 Thomson Consumer Electron Inc 電話自動応答装置用自動切断検出回路

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897793A (en) * 1988-01-26 1990-01-30 Francotyp-Postalia Gmbh Configuration for a franking machine
FR2733381B1 (fr) * 1995-04-19 1997-05-30 Alcatel Business Systems Procede et dispositif de controle de la sauvegarde de l'enregistrement d'un message telephone pour appareillage dote d'une fonction de repondeur et appareillage dote d'un tel dispositif

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57109449A (en) * 1980-12-26 1982-07-07 Masao Uchiumi Call detecting circuit
JPS6272260A (ja) * 1985-09-26 1987-04-02 Matsushita Electric Ind Co Ltd 留守番電話装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1529452A (en) * 1975-04-10 1978-10-18 Ansafone Ltd Detection of direct currents or voltages
GB2092411A (en) * 1980-06-09 1982-08-11 Phone Mate Ltd Telephone answering machines
US4484036A (en) * 1981-05-18 1984-11-20 T.A.D. Avanti, Inc. Telephone ring detector system
US4444999A (en) * 1982-08-23 1984-04-24 Sparrevohn Frederic R Automatic electronic disconnector for subscriber terminal equipment
US4496797A (en) * 1983-09-29 1985-01-29 At&T Technologies, Inc. Circuit for automatically connecting and disconnecting a speakerphone to a telephone line

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57109449A (en) * 1980-12-26 1982-07-07 Masao Uchiumi Call detecting circuit
JPS6272260A (ja) * 1985-09-26 1987-04-02 Matsushita Electric Ind Co Ltd 留守番電話装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0556138A (ja) * 1991-01-07 1993-03-05 Thomson Consumer Electron Inc 電話自動応答装置用自動切断検出回路

Also Published As

Publication number Publication date
US4833703A (en) 1989-05-23
JPH054362Y2 (en]) 1993-02-03

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