JPH0137897B2 - - Google Patents

Info

Publication number
JPH0137897B2
JPH0137897B2 JP57038898A JP3889882A JPH0137897B2 JP H0137897 B2 JPH0137897 B2 JP H0137897B2 JP 57038898 A JP57038898 A JP 57038898A JP 3889882 A JP3889882 A JP 3889882A JP H0137897 B2 JPH0137897 B2 JP H0137897B2
Authority
JP
Japan
Prior art keywords
alarm
circuit
dial
safe
abnormality
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.)
Expired
Application number
JP57038898A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58156259A (ja
Inventor
Takashi Oyamada
Yoshiaki Takeda
Yoshio Shinoda
Toshiaki Hayasaka
Toshiji Kinoshita
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.)
Tamura Electric Works Ltd
Original Assignee
Tamura Electric Works 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 Tamura Electric Works Ltd filed Critical Tamura Electric Works Ltd
Priority to JP3889882A priority Critical patent/JPS58156259A/ja
Publication of JPS58156259A publication Critical patent/JPS58156259A/ja
Publication of JPH0137897B2 publication Critical patent/JPH0137897B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • H04M17/023—Circuit arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Prepayment Telephone Systems (AREA)
JP3889882A 1982-03-12 1982-03-12 公衆電話機のアラ−ム情報送信方式 Granted JPS58156259A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3889882A JPS58156259A (ja) 1982-03-12 1982-03-12 公衆電話機のアラ−ム情報送信方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3889882A JPS58156259A (ja) 1982-03-12 1982-03-12 公衆電話機のアラ−ム情報送信方式

Publications (2)

Publication Number Publication Date
JPS58156259A JPS58156259A (ja) 1983-09-17
JPH0137897B2 true JPH0137897B2 (OSRAM) 1989-08-10

Family

ID=12538015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3889882A Granted JPS58156259A (ja) 1982-03-12 1982-03-12 公衆電話機のアラ−ム情報送信方式

Country Status (1)

Country Link
JP (1) JPS58156259A (OSRAM)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6469154A (en) * 1987-09-10 1989-03-15 Tamura Electric Works Ltd Public telephone set
US4985910A (en) * 1989-09-15 1991-01-15 Mars Incorporated Method and apparatus for retrofitting a standard coin operated telephone employing a carbon microphone with a line powered electronic controller
JP2706850B2 (ja) * 1990-11-30 1998-01-28 株式会社田村電機製作所 公衆電話機

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039768A (en) * 1976-05-26 1977-08-02 Maley James B O Pay telephone station monitor system
JPS54127610A (en) * 1978-03-28 1979-10-03 Nippon Telegr & Teleph Corp <Ntt> Rack open/close monitor system for public telephone

Also Published As

Publication number Publication date
JPS58156259A (ja) 1983-09-17

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