JPS64852A - Alarm system using telephone set - Google Patents

Alarm system using telephone set

Info

Publication number
JPS64852A
JPS64852A JP5338888A JP5338888A JPS64852A JP S64852 A JPS64852 A JP S64852A JP 5338888 A JP5338888 A JP 5338888A JP 5338888 A JP5338888 A JP 5338888A JP S64852 A JPS64852 A JP S64852A
Authority
JP
Japan
Prior art keywords
circuit
alarm
telephone
signal
turning
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
JP5338888A
Other languages
Japanese (ja)
Other versions
JPH01852A (en
Inventor
Yoshihiko Furuno
Nobukazu Kakeya
Teruyuki Taniguchi
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical 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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP5338888A priority Critical patent/JPS64852A/en
Publication of JPH01852A publication Critical patent/JPH01852A/en
Publication of JPS64852A publication Critical patent/JPS64852A/en
Pending legal-status Critical Current

Links

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  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE: To transmit the alarm from an alarm sensor to telephone slave machines by using a call signal oscillating circuit part provided in a main telephone circuit as an alarm tone emitting means and using general telephone slave machines.
CONSTITUTION: When the contact of an optional alarm sensor 14, for example, a fire sensor 14A is turned on, this turning-on signal is transmitted to an alarm circuit 36 of a first telephone slave machine 112. The alarm circuit 36 transmits this turning-on signal from an information output part 39 to a control circuit 16 through an information input part 33 in a main telephone circuit 15. When the turning-on signal of the fire sensor 14A is transmitted to the circuit 16, the circuit 16 switches relays r13∼r53 corresponding to all telephone slave machines 12 to the side of a call signal oscillator 26 and switches relays r14∼r54 to the side of an off-hook detector 27 to ring all telephone slave machines 12 at a time.
COPYRIGHT: (C)1989,JPO&Japio
JP5338888A 1987-03-23 1988-03-07 Alarm system using telephone set Pending JPS64852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5338888A JPS64852A (en) 1987-03-23 1988-03-07 Alarm system using telephone set

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62-69922 1987-03-23
JP6992287 1987-03-23
JP5338888A JPS64852A (en) 1987-03-23 1988-03-07 Alarm system using telephone set

Publications (2)

Publication Number Publication Date
JPH01852A JPH01852A (en) 1989-01-05
JPS64852A true JPS64852A (en) 1989-01-05

Family

ID=26394102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5338888A Pending JPS64852A (en) 1987-03-23 1988-03-07 Alarm system using telephone set

Country Status (1)

Country Link
JP (1) JPS64852A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0678350A (en) * 1992-08-25 1994-03-18 Matsushita Electric Works Ltd Home telephone system having telephone exchange function
JP2007228632A (en) * 2007-05-24 2007-09-06 Hitachi Communication Technologies Ltd Information notification system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6115868B2 (en) * 1977-11-21 1986-04-26 Mitsubishi Chem Ind

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6115868B2 (en) * 1977-11-21 1986-04-26 Mitsubishi Chem Ind

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0678350A (en) * 1992-08-25 1994-03-18 Matsushita Electric Works Ltd Home telephone system having telephone exchange function
JP2007228632A (en) * 2007-05-24 2007-09-06 Hitachi Communication Technologies Ltd Information notification system

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