JPS556932A - Charging telephone system - Google Patents

Charging telephone system

Info

Publication number
JPS556932A
JPS556932A JP7929078A JP7929078A JPS556932A JP S556932 A JPS556932 A JP S556932A JP 7929078 A JP7929078 A JP 7929078A JP 7929078 A JP7929078 A JP 7929078A JP S556932 A JPS556932 A JP S556932A
Authority
JP
Japan
Prior art keywords
dial
circuit
coin
dial tone
detection
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
JP7929078A
Other languages
Japanese (ja)
Other versions
JPS5842987B2 (en
Inventor
Tadahiko Shibuya
Takashi Oyamada
Akio Hikone
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 JP7929078A priority Critical patent/JPS5842987B2/en
Publication of JPS556932A publication Critical patent/JPS556932A/en
Publication of JPS5842987B2 publication Critical patent/JPS5842987B2/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Prepayment Telephone Systems (AREA)

Abstract

PURPOSE:To prevent the wrong operation of the telephone set by repealing the dial transmissin given before detection of the normal dial tone and other methods. CONSTITUTION:The dial tone receives the voltage generation by resistance RS and then detected by dial tone detection circuit DTD. If the dial is turned before detection of the dial tone, coin detector CDT2 generates the output with On of short contact DS. Then short circuit DST is actuated via short driving circuit DSD, and thus the dial transmission is repealed. Coin detection circuits CDT1 and CDT2 detect the presence or absence of the coins at the prescribed positions on the coin route at the dial turning time, the dial releasing time and the reception start and end time of the charging signals and immediately after the hook-off. And when some fault is detected, cut-off circuit ECF is actuated via pulse generation circuit PGN in order to cut off the loop circuit.
JP7929078A 1978-06-30 1978-06-30 Billing telephone method Expired JPS5842987B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7929078A JPS5842987B2 (en) 1978-06-30 1978-06-30 Billing telephone method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7929078A JPS5842987B2 (en) 1978-06-30 1978-06-30 Billing telephone method

Publications (2)

Publication Number Publication Date
JPS556932A true JPS556932A (en) 1980-01-18
JPS5842987B2 JPS5842987B2 (en) 1983-09-22

Family

ID=13685718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7929078A Expired JPS5842987B2 (en) 1978-06-30 1978-06-30 Billing telephone method

Country Status (1)

Country Link
JP (1) JPS5842987B2 (en)

Also Published As

Publication number Publication date
JPS5842987B2 (en) 1983-09-22

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