JPS5725758A - Message transfer system at night for telephone circuit - Google Patents

Message transfer system at night for telephone circuit

Info

Publication number
JPS5725758A
JPS5725758A JP10084980A JP10084980A JPS5725758A JP S5725758 A JPS5725758 A JP S5725758A JP 10084980 A JP10084980 A JP 10084980A JP 10084980 A JP10084980 A JP 10084980A JP S5725758 A JPS5725758 A JP S5725758A
Authority
JP
Japan
Prior art keywords
message
absence
night
telephone
telephone set
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.)
Pending
Application number
JP10084980A
Other languages
Japanese (ja)
Inventor
Teruaki Kitagawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10084980A priority Critical patent/JPS5725758A/en
Publication of JPS5725758A publication Critical patent/JPS5725758A/en
Pending 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

Abstract

PURPOSE:To switch the circuit to the side of an automatic answering telephone set through a main device and at the same time transmit a message of absence to the caller and based on the night information obtained by detecting that the inside a room becomes dark through a photodetector provided to a telephone. CONSTITUTION:A phototransistor P is provided to each telephone 1 to detect the brightness inside a room. Then no current flows to the P when the inside of the room becomes dark, and thus the base potential of a transistor (TR) 4 increases. As a result, the TR4 conducts. A relay 9 connected to the collector of the TR4 is energized by the conduction of the TR4, and circuits L1 and L2 are connected to an automatic answering telephone set 3 by a contact 4. A message of absence is previousy recorded to the telephone set 3 for the caller, and thus the message of absence can be transmitted after the circuits are switched.
JP10084980A 1980-07-23 1980-07-23 Message transfer system at night for telephone circuit Pending JPS5725758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10084980A JPS5725758A (en) 1980-07-23 1980-07-23 Message transfer system at night for telephone circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10084980A JPS5725758A (en) 1980-07-23 1980-07-23 Message transfer system at night for telephone circuit

Publications (1)

Publication Number Publication Date
JPS5725758A true JPS5725758A (en) 1982-02-10

Family

ID=14284762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10084980A Pending JPS5725758A (en) 1980-07-23 1980-07-23 Message transfer system at night for telephone circuit

Country Status (1)

Country Link
JP (1) JPS5725758A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045989U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPS6045992U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPS6045988U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPS6045990U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPS6045991U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPS63204965A (en) * 1987-02-20 1988-08-24 Murata Mfg Co Ltd Telephone system
JPS6425282U (en) * 1986-11-20 1989-02-13
US5090361A (en) * 1988-05-26 1992-02-25 Honda Giken Kogyo Kabushiki Kaisha Coating apparatus
KR19980053342A (en) * 1996-12-26 1998-09-25 구자홍 How to Answer Calls Depending on Ambient Light

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH022137Y2 (en) * 1983-09-06 1990-01-18
JPH022135Y2 (en) * 1983-09-06 1990-01-18
JPS6045988U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPS6045990U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPS6045991U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPH022136Y2 (en) * 1983-09-06 1990-01-18
JPS6045992U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPH022138Y2 (en) * 1983-09-06 1990-01-18
JPH022139Y2 (en) * 1983-09-06 1990-01-18
JPS6045989U (en) * 1983-09-06 1985-04-01 西武ポリマ化成株式会社 pipe fittings
JPS6425282U (en) * 1986-11-20 1989-02-13
JPS63204965A (en) * 1987-02-20 1988-08-24 Murata Mfg Co Ltd Telephone system
US5090361A (en) * 1988-05-26 1992-02-25 Honda Giken Kogyo Kabushiki Kaisha Coating apparatus
KR19980053342A (en) * 1996-12-26 1998-09-25 구자홍 How to Answer Calls Depending on Ambient Light

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