JPS555584A - Telephone set - Google Patents

Telephone set

Info

Publication number
JPS555584A
JPS555584A JP7959078A JP7959078A JPS555584A JP S555584 A JPS555584 A JP S555584A JP 7959078 A JP7959078 A JP 7959078A JP 7959078 A JP7959078 A JP 7959078A JP S555584 A JPS555584 A JP S555584A
Authority
JP
Japan
Prior art keywords
signal
fed
control unit
unit
handset
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
JP7959078A
Other languages
English (en)
Inventor
Hiyoshi Tatsuno
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.)
Tokyo Tatsuno Co Ltd
Original Assignee
Tokyo Tatsuno Co 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 Tokyo Tatsuno Co Ltd filed Critical Tokyo Tatsuno Co Ltd
Priority to JP7959078A priority Critical patent/JPS555584A/ja
Publication of JPS555584A publication Critical patent/JPS555584A/ja
Pending 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
    • 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
    • H04M1/675—Preventing unauthorised calls from a telephone set by electronic means the user being required to insert a coded card, e.g. a smart card carrying an integrated circuit chip

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
JP7959078A 1978-06-29 1978-06-29 Telephone set Pending JPS555584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7959078A JPS555584A (en) 1978-06-29 1978-06-29 Telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7959078A JPS555584A (en) 1978-06-29 1978-06-29 Telephone set

Publications (1)

Publication Number Publication Date
JPS555584A true JPS555584A (en) 1980-01-16

Family

ID=13694203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7959078A Pending JPS555584A (en) 1978-06-29 1978-06-29 Telephone set

Country Status (1)

Country Link
JP (1) JPS555584A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625828A (ja) * 1985-04-01 1987-01-12 ハスキ−　インジエクシヨン　モ−ルデイング　システムズ　リミテツド 往復プレス
US5328528A (en) * 1993-03-16 1994-07-12 China Steel Corporation Process for manufacturing cold-rolled steel sheets with high-strength, and high-ductility and its named article

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625828A (ja) * 1985-04-01 1987-01-12 ハスキ−　インジエクシヨン　モ−ルデイング　システムズ　リミテツド 往復プレス
US5328528A (en) * 1993-03-16 1994-07-12 China Steel Corporation Process for manufacturing cold-rolled steel sheets with high-strength, and high-ductility and its named article

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