JPH0126581B2 - - Google Patents

Info

Publication number
JPH0126581B2
JPH0126581B2 JP57171501A JP17150182A JPH0126581B2 JP H0126581 B2 JPH0126581 B2 JP H0126581B2 JP 57171501 A JP57171501 A JP 57171501A JP 17150182 A JP17150182 A JP 17150182A JP H0126581 B2 JPH0126581 B2 JP H0126581B2
Authority
JP
Japan
Prior art keywords
telephone
switch
encrypted
line
calls
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
JP57171501A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5961349A (ja
Inventor
Naohiro Masunaga
Mitsuhiro Koba
Michihiro Shinchi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP17150182A priority Critical patent/JPS5961349A/ja
Publication of JPS5961349A publication Critical patent/JPS5961349A/ja
Publication of JPH0126581B2 publication Critical patent/JPH0126581B2/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
    • H04M1/663—Preventing unauthorised calls to a telephone set
    • H04M1/665—Preventing unauthorised calls to a telephone set by checking the validity of a code

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
JP17150182A 1982-09-30 1982-09-30 暗号付き電話装置 Granted JPS5961349A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17150182A JPS5961349A (ja) 1982-09-30 1982-09-30 暗号付き電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17150182A JPS5961349A (ja) 1982-09-30 1982-09-30 暗号付き電話装置

Publications (2)

Publication Number Publication Date
JPS5961349A JPS5961349A (ja) 1984-04-07
JPH0126581B2 true JPH0126581B2 (US07922777-20110412-C00004.png) 1989-05-24

Family

ID=15924265

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17150182A Granted JPS5961349A (ja) 1982-09-30 1982-09-30 暗号付き電話装置

Country Status (1)

Country Link
JP (1) JPS5961349A (US07922777-20110412-C00004.png)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6166449A (ja) * 1984-09-10 1986-04-05 Matsushita Electric Ind Co Ltd 電話機装置
JPS6184954A (ja) * 1984-10-02 1986-04-30 Omron Tateisi Electronics Co 電話機
JPS61128657A (ja) * 1984-11-27 1986-06-16 Fujitsu Ltd 暗証番号電話機
JPH0828768B2 (ja) * 1985-09-05 1996-03-21 松下電器産業株式会社 通話装置
JPH073992B2 (ja) * 1986-02-04 1995-01-18 シャープ株式会社 遠隔制御装置
JPS62294362A (ja) * 1986-06-12 1987-12-21 Sanyo Electric Co Ltd 電話機
JPH071639U (ja) * 1993-06-07 1995-01-10 リー パトリック マイクロコンピュータのテレホン・フィルター

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321605A (en) * 1976-08-10 1978-02-28 Toppan Printing Co Ltd Printing condition inspection mark for multi color sheet printed matter
JPS5563157A (en) * 1978-11-02 1980-05-13 Nippon Telegr & Teleph Corp <Ntt> Automatic answering telephone system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321605A (en) * 1976-08-10 1978-02-28 Toppan Printing Co Ltd Printing condition inspection mark for multi color sheet printed matter
JPS5563157A (en) * 1978-11-02 1980-05-13 Nippon Telegr & Teleph Corp <Ntt> Automatic answering telephone system

Also Published As

Publication number Publication date
JPS5961349A (ja) 1984-04-07

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