JPS57188171A - Master and slave public telephone system - Google Patents

Master and slave public telephone system

Info

Publication number
JPS57188171A
JPS57188171A JP7292181A JP7292181A JPS57188171A JP S57188171 A JPS57188171 A JP S57188171A JP 7292181 A JP7292181 A JP 7292181A JP 7292181 A JP7292181 A JP 7292181A JP S57188171 A JPS57188171 A JP S57188171A
Authority
JP
Japan
Prior art keywords
telephone set
call
master
slave
charge
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
JP7292181A
Other languages
Japanese (ja)
Inventor
Toshiyasu Muta
Fuyuhisa Hayakawa
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
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 JP7292181A priority Critical patent/JPS57188171A/en
Publication of JPS57188171A publication Critical patent/JPS57188171A/en
Pending 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)

Abstract

PURPOSE:To enable to make outgoing call and incoming call free of charge from both sides but to limit incoming call with charge to the response from a slave set as a rule, by adding a function which can communicate between a public telephone set being a master telephone set and a slave telephone set being a general telephone set. CONSTITUTION:A master telephone set TEL1 provided with a coin set CM is connected to a station device SE via a subscriber line L and a slave telephone set TEL2 is connected to the master telephone set through a cable. When the TEL2 hooks off for a call, a monitor section HSD detects it and a control section CT1 informs the call to the station device SE. The call of the TEL1 is given to the station device from the CT1. When a normal incoming call not requiring charge from the SE is present, the call can be responded from both the master and slave telephone sets, but as to the incoming call with charge, the master telephone set can only respond through the operation of the CT1 by means of a KS key operation.
JP7292181A 1981-05-15 1981-05-15 Master and slave public telephone system Pending JPS57188171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7292181A JPS57188171A (en) 1981-05-15 1981-05-15 Master and slave public telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7292181A JPS57188171A (en) 1981-05-15 1981-05-15 Master and slave public telephone system

Publications (1)

Publication Number Publication Date
JPS57188171A true JPS57188171A (en) 1982-11-19

Family

ID=13503293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7292181A Pending JPS57188171A (en) 1981-05-15 1981-05-15 Master and slave public telephone system

Country Status (1)

Country Link
JP (1) JPS57188171A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63262953A (en) * 1987-04-20 1988-10-31 Nippon Telegr & Teleph Corp <Ntt> Telephone system using telephone card
US6346995B1 (en) * 1993-06-29 2002-02-12 Canon Kabushiki Kaisha Communication apparatus with outgoing call limiting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63262953A (en) * 1987-04-20 1988-10-31 Nippon Telegr & Teleph Corp <Ntt> Telephone system using telephone card
US6346995B1 (en) * 1993-06-29 2002-02-12 Canon Kabushiki Kaisha Communication apparatus with outgoing call limiting

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