JPS5583367A - Malicious call search system - Google Patents

Malicious call search system

Info

Publication number
JPS5583367A
JPS5583367A JP15636578A JP15636578A JPS5583367A JP S5583367 A JPS5583367 A JP S5583367A JP 15636578 A JP15636578 A JP 15636578A JP 15636578 A JP15636578 A JP 15636578A JP S5583367 A JPS5583367 A JP S5583367A
Authority
JP
Japan
Prior art keywords
additional unit
subscriber
search system
mctau
malicious
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
JP15636578A
Other languages
Japanese (ja)
Inventor
Takashi Morita
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15636578A priority Critical patent/JPS5583367A/en
Publication of JPS5583367A publication Critical patent/JPS5583367A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/72—Finding out and indicating number of calling subscriber

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)

Abstract

PURPOSE:To make it possible to search for a malicious calling subscriber rapidly in an extremely easy way by adding an additional unit to a called telephone set, by transferring information between the additional unit and an exchange by using a full-confirmation type signal, and then by sending a calling-subscriber's number to the additional unit. CONSTITUTION:Called-subscriber's telephone set SUB.B is provided additionally with additional unit MCTAU and a full-confirmation type signal, an inter-office signal, is used for information transfer between unit MCTAU and outgoing sender OS of an exchange. Then, the telephone number of calling subscriber SUB.A is sent out so as to search for the malicious calling subscriber rapidly in an extremely- easy way.
JP15636578A 1978-12-20 1978-12-20 Malicious call search system Pending JPS5583367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15636578A JPS5583367A (en) 1978-12-20 1978-12-20 Malicious call search system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15636578A JPS5583367A (en) 1978-12-20 1978-12-20 Malicious call search system

Publications (1)

Publication Number Publication Date
JPS5583367A true JPS5583367A (en) 1980-06-23

Family

ID=15626153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15636578A Pending JPS5583367A (en) 1978-12-20 1978-12-20 Malicious call search system

Country Status (1)

Country Link
JP (1) JPS5583367A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145267A (en) * 1981-10-02 1983-08-30 ソニンテル　ソシエダデ　ナシヨナル　デ　インダストリア　デ　テレコミユニカコエス　ルトダ． Calling channel tracing system with identifying detector
JPS61500094A (en) * 1983-07-12 1986-01-16 エ−テイ−アンドテイ−　テクノロジ−ズ，インコ−ポレ−テツド Method and apparatus for providing call tracing services

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145267A (en) * 1981-10-02 1983-08-30 ソニンテル　ソシエダデ　ナシヨナル　デ　インダストリア　デ　テレコミユニカコエス　ルトダ． Calling channel tracing system with identifying detector
US4754475A (en) * 1981-10-02 1988-06-28 Sonintel Sociedade Nacional De Industria De Telecomunicacoes Ltda. Calling line tracing system and identification detector
JPS61500094A (en) * 1983-07-12 1986-01-16 エ−テイ−アンドテイ−　テクノロジ−ズ，インコ−ポレ−テツド Method and apparatus for providing call tracing services

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