JPS57107672A - Public telephone circuit - Google Patents

Public telephone circuit

Info

Publication number
JPS57107672A
JPS57107672A JP18446380A JP18446380A JPS57107672A JP S57107672 A JPS57107672 A JP S57107672A JP 18446380 A JP18446380 A JP 18446380A JP 18446380 A JP18446380 A JP 18446380A JP S57107672 A JPS57107672 A JP S57107672A
Authority
JP
Japan
Prior art keywords
call
relay
coin
case
main wire
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
JP18446380A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6335148B2 (enrdf_load_stackoverflow
Inventor
Sadao Saito
Hiroshi Osada
Junji Nakada
Hideaki Teramura
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.)
Nippon Telegraph and Telephone Corp
Tamura Electric Works Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp, Tamura Electric Works Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP18446380A priority Critical patent/JPS57107672A/ja
Publication of JPS57107672A publication Critical patent/JPS57107672A/ja
Publication of JPS6335148B2 publication Critical patent/JPS6335148B2/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)
JP18446380A 1980-12-25 1980-12-25 Public telephone circuit Granted JPS57107672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18446380A JPS57107672A (en) 1980-12-25 1980-12-25 Public telephone circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18446380A JPS57107672A (en) 1980-12-25 1980-12-25 Public telephone circuit

Publications (2)

Publication Number Publication Date
JPS57107672A true JPS57107672A (en) 1982-07-05
JPS6335148B2 JPS6335148B2 (enrdf_load_stackoverflow) 1988-07-13

Family

ID=16153587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18446380A Granted JPS57107672A (en) 1980-12-25 1980-12-25 Public telephone circuit

Country Status (1)

Country Link
JP (1) JPS57107672A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6335148B2 (enrdf_load_stackoverflow) 1988-07-13

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