JPS57107670A - Public telephone set for consignment - Google Patents

Public telephone set for consignment

Info

Publication number
JPS57107670A
JPS57107670A JP18446080A JP18446080A JPS57107670A JP S57107670 A JPS57107670 A JP S57107670A JP 18446080 A JP18446080 A JP 18446080A JP 18446080 A JP18446080 A JP 18446080A JP S57107670 A JPS57107670 A JP S57107670A
Authority
JP
Japan
Prior art keywords
callout
hook
taking
relay
positive polarity
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
JP18446080A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6333753B2 (enrdf_load_stackoverflow
Inventor
Sadao Saito
Keisuke Tanaka
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 JP18446080A priority Critical patent/JPS57107670A/ja
Publication of JPS57107670A publication Critical patent/JPS57107670A/ja
Publication of JPS6333753B2 publication Critical patent/JPS6333753B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/667—Preventing unauthorised calls from a telephone set
    • H04M1/67—Preventing unauthorised calls from a telephone set by electronic means

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Prepayment Telephone Systems (AREA)
JP18446080A 1980-12-25 1980-12-25 Public telephone set for consignment Granted JPS57107670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18446080A JPS57107670A (en) 1980-12-25 1980-12-25 Public telephone set for consignment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18446080A JPS57107670A (en) 1980-12-25 1980-12-25 Public telephone set for consignment

Publications (2)

Publication Number Publication Date
JPS57107670A true JPS57107670A (en) 1982-07-05
JPS6333753B2 JPS6333753B2 (enrdf_load_stackoverflow) 1988-07-06

Family

ID=16153533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18446080A Granted JPS57107670A (en) 1980-12-25 1980-12-25 Public telephone set for consignment

Country Status (1)

Country Link
JP (1) JPS57107670A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6333753B2 (enrdf_load_stackoverflow) 1988-07-06

Similar Documents

Publication Publication Date Title
KR880008605A (ko) 전화·팩시밀리 절환방식
DE3484442D1 (de) Rufabschaltungserkennungssystem.
JPS57107670A (en) Public telephone set for consignment
JPS57206156A (en) Calling system for information of calling subscriber
US3748405A (en) Key telephone system line circuit
JPS56137763A (en) Telephone transfer device with transfer destination switching function
JPS57107662A (en) Outgoing and incoming call separating type telephone device
ES8705729A1 (es) Un sistema de acoplamiento punta-llamada para telefonia
JPS6484965A (en) Terminal call controller
JPS57145466A (en) Switchboard
JPS57131157A (en) Absence pretending telephone set
JPS55125755A (en) Alternating current detection system for subscriber line
JPS5563162A (en) Subscriber line call signal transmission system
US3748404A (en) Telephone line circuit embodying a triggerable avalanche device
JPS56168464A (en) Automatic dialing device
JPS56111360A (en) Telephone automatic calling system
KR970031680A (ko) 자동응답기에서 원격지 알람 콜 서비스 방법
JPS57131158A (en) Automatic answering telephone set
JPS52123809A (en) Detection of caller#s number
KR960009515A (ko) 에러음 발생시에 훅-스위치를 자동 복구하는 전화기 시스템
JPS57208757A (en) Automatic answering telephone set
JPS5718194A (en) Priority connection system of toll incoming call
JPS57160251A (en) Automatic answering telephone set
JPS57138255A (en) Fault detection system
KR920009161A (ko) 팩시밀리에서의 자동 음성 응답방법