JPS5755656A - Tracking system mischievous call - Google Patents

Tracking system mischievous call

Info

Publication number
JPS5755656A
JPS5755656A JP13127180A JP13127180A JPS5755656A JP S5755656 A JPS5755656 A JP S5755656A JP 13127180 A JP13127180 A JP 13127180A JP 13127180 A JP13127180 A JP 13127180A JP S5755656 A JPS5755656 A JP S5755656A
Authority
JP
Japan
Prior art keywords
call
subscriber
mischievous
making
route
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
JP13127180A
Other languages
Japanese (ja)
Other versions
JPS6130461B2 (en
Inventor
Senji Kuroki
Ryuji Sakamoto
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 JP13127180A priority Critical patent/JPS5755656A/en
Publication of JPS5755656A publication Critical patent/JPS5755656A/en
Publication of JPS6130461B2 publication Critical patent/JPS6130461B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

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

Abstract

PURPOSE:To enable a communication with a called subscriber without making a calling subscriber noticed of it, by inserting a three-route trunk, enabling a monitoring seat and the called subscriber to hold a communication with each other, into a channel once request to track a mischievous call is generated. CONSTITUTION:A registered subscriber A offered mischievous-call tracking call, once receiving a mischievous call, performs hooking operation on a receiver to request the start of the tracking service. On receiving the start signal, an electronic exchange inserts the 1st and 2nd routes of a three-route trunk TRK into an incoming channel. Simultaneously, the telephone number of a subscriber making the mischievous call is outputted on a typewriter. In addition, a special-tone generator operates to be connected to the 3rd route of the three-route trunk TRK. The registered subscriber A listens to a special tone to know that the tracking of the mischievous call is started without making the calling subscriber B noticed of it.
JP13127180A 1980-09-20 1980-09-20 Tracking system mischievous call Granted JPS5755656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13127180A JPS5755656A (en) 1980-09-20 1980-09-20 Tracking system mischievous call

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13127180A JPS5755656A (en) 1980-09-20 1980-09-20 Tracking system mischievous call

Publications (2)

Publication Number Publication Date
JPS5755656A true JPS5755656A (en) 1982-04-02
JPS6130461B2 JPS6130461B2 (en) 1986-07-14

Family

ID=15054020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13127180A Granted JPS5755656A (en) 1980-09-20 1980-09-20 Tracking system mischievous call

Country Status (1)

Country Link
JP (1) JPS5755656A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS631137A (en) * 1986-06-20 1988-01-06 Fujitsu Ltd System for reporting incoming of evilminded call

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS631137A (en) * 1986-06-20 1988-01-06 Fujitsu Ltd System for reporting incoming of evilminded call

Also Published As

Publication number Publication date
JPS6130461B2 (en) 1986-07-14

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