JPS6333832B2 - - Google Patents

Info

Publication number
JPS6333832B2
JPS6333832B2 JP2973081A JP2973081A JPS6333832B2 JP S6333832 B2 JPS6333832 B2 JP S6333832B2 JP 2973081 A JP2973081 A JP 2973081A JP 2973081 A JP2973081 A JP 2973081A JP S6333832 B2 JPS6333832 B2 JP S6333832B2
Authority
JP
Japan
Prior art keywords
call
unit
charge
digital
telephone
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
JP2973081A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57143978A (en
Inventor
Morifumi Okugawa
Yoshio Fujishita
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2973081A priority Critical patent/JPS57143978A/ja
Publication of JPS57143978A publication Critical patent/JPS57143978A/ja
Publication of JPS6333832B2 publication Critical patent/JPS6333832B2/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)
JP2973081A 1981-03-02 1981-03-02 Digital public telephone system Granted JPS57143978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2973081A JPS57143978A (en) 1981-03-02 1981-03-02 Digital public telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2973081A JPS57143978A (en) 1981-03-02 1981-03-02 Digital public telephone system

Publications (2)

Publication Number Publication Date
JPS57143978A JPS57143978A (en) 1982-09-06
JPS6333832B2 true JPS6333832B2 (enExample) 1988-07-07

Family

ID=12284213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2973081A Granted JPS57143978A (en) 1981-03-02 1981-03-02 Digital public telephone system

Country Status (1)

Country Link
JP (1) JPS57143978A (enExample)

Also Published As

Publication number Publication date
JPS57143978A (en) 1982-09-06

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