JPS5741869B2 - - Google Patents

Info

Publication number
JPS5741869B2
JPS5741869B2 JP4206477A JP4206477A JPS5741869B2 JP S5741869 B2 JPS5741869 B2 JP S5741869B2 JP 4206477 A JP4206477 A JP 4206477A JP 4206477 A JP4206477 A JP 4206477A JP S5741869 B2 JPS5741869 B2 JP S5741869B2
Authority
JP
Japan
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
JP4206477A
Other languages
Japanese (ja)
Other versions
JPS53128207A (en
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 filed Critical
Priority to JP4206477A priority Critical patent/JPS53128207A/en
Publication of JPS53128207A publication Critical patent/JPS53128207A/en
Publication of JPS5741869B2 publication Critical patent/JPS5741869B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP4206477A 1977-04-14 1977-04-14 Call tracing system for telephone Granted JPS53128207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4206477A JPS53128207A (en) 1977-04-14 1977-04-14 Call tracing system for telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4206477A JPS53128207A (en) 1977-04-14 1977-04-14 Call tracing system for telephone

Publications (2)

Publication Number Publication Date
JPS53128207A JPS53128207A (en) 1978-11-09
JPS5741869B2 true JPS5741869B2 (en) 1982-09-06

Family

ID=12625660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4206477A Granted JPS53128207A (en) 1977-04-14 1977-04-14 Call tracing system for telephone

Country Status (1)

Country Link
JP (1) JPS53128207A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0121689Y2 (en) * 1985-01-24 1989-06-28
JPH0535968Y2 (en) * 1986-01-25 1993-09-10

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825752A (en) * 1981-08-07 1983-02-16 Kazutoshi Nakao Detecting device for telephone number calling to specific telephone number
JPS60171852A (en) * 1984-02-15 1985-09-05 Fujitsu Ltd Malicious call detecting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0121689Y2 (en) * 1985-01-24 1989-06-28
JPH0535968Y2 (en) * 1986-01-25 1993-09-10

Also Published As

Publication number Publication date
JPS53128207A (en) 1978-11-09

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