JPS5217703A - Public telephone - Google Patents

Public telephone

Info

Publication number
JPS5217703A
JPS5217703A JP7792975A JP7792975A JPS5217703A JP S5217703 A JPS5217703 A JP S5217703A JP 7792975 A JP7792975 A JP 7792975A JP 7792975 A JP7792975 A JP 7792975A JP S5217703 A JPS5217703 A JP S5217703A
Authority
JP
Japan
Prior art keywords
public telephone
telephone
utilization
detect
control device
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
JP7792975A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5438005B2 (enrdf_load_stackoverflow
Inventor
Chuta Aikawa
Noriyoshi Sanada
Shunichiro Miura
Akira Iwai
Hiroyasu Sasaki
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 JP7792975A priority Critical patent/JPS5217703A/ja
Publication of JPS5217703A publication Critical patent/JPS5217703A/ja
Publication of JPS5438005B2 publication Critical patent/JPS5438005B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Prepayment Telephone Systems (AREA)
JP7792975A 1975-06-24 1975-06-24 Public telephone Granted JPS5217703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7792975A JPS5217703A (en) 1975-06-24 1975-06-24 Public telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7792975A JPS5217703A (en) 1975-06-24 1975-06-24 Public telephone

Publications (2)

Publication Number Publication Date
JPS5217703A true JPS5217703A (en) 1977-02-09
JPS5438005B2 JPS5438005B2 (enrdf_load_stackoverflow) 1979-11-19

Family

ID=13647765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7792975A Granted JPS5217703A (en) 1975-06-24 1975-06-24 Public telephone

Country Status (1)

Country Link
JP (1) JPS5217703A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5875951A (ja) * 1981-10-31 1983-05-07 Anritsu Corp ホログラムカード公衆電話機

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5189810U (enrdf_load_stackoverflow) * 1975-01-13 1976-07-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5189810U (enrdf_load_stackoverflow) * 1975-01-13 1976-07-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5875951A (ja) * 1981-10-31 1983-05-07 Anritsu Corp ホログラムカード公衆電話機

Also Published As

Publication number Publication date
JPS5438005B2 (enrdf_load_stackoverflow) 1979-11-19

Similar Documents

Publication Publication Date Title
JPS5217703A (en) Public telephone
JPS5213706A (en) Key telephone system
JPS5252303A (en) Data transmissio system
JPS5339808A (en) Control circuit
JPS5232483A (en) Signal receiving device
JPS5232484A (en) Signal receiving device
JPS51138308A (en) Charging system
JPS5435604A (en) Ringing system of push-button telephone set
JPS5232205A (en) Circuit connecting equipment
JPS51130187A (en) Synchronizing equipment
JPS5366310A (en) Tone signal detecting circuit
JPS5235503A (en) Stop ring circuit for telephone bell ring
JPS5355905A (en) Automatic dialing system
JPS51138107A (en) Signal detection output system
JPS53122305A (en) Key telephone set
JPS53113407A (en) Loop detection circuit
JPS51148304A (en) Circuit to discriminate speech signals and audible signals
JPS5274201A (en) Display control circuit for key telephone system
JPS51111328A (en) Speaker-test device
JPS5229774A (en) Electronic clock
JPS5342607A (en) Telephone charge display unit
JPS52123808A (en) Charging controlling on public telephone set
JPS5210004A (en) Switching circuit by voice signal
JPS52104009A (en) Caller s number receiving system
JPS5224408A (en) Multi-frequenc y wave signal detecting system