JPS55117361A - False call control system - Google Patents

False call control system

Info

Publication number
JPS55117361A
JPS55117361A JP2417379A JP2417379A JPS55117361A JP S55117361 A JPS55117361 A JP S55117361A JP 2417379 A JP2417379 A JP 2417379A JP 2417379 A JP2417379 A JP 2417379A JP S55117361 A JPS55117361 A JP S55117361A
Authority
JP
Japan
Prior art keywords
unit
false
exchange
false call
circuit
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
JP2417379A
Other languages
Japanese (ja)
Inventor
Junichi Kimura
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2417379A priority Critical patent/JPS55117361A/en
Publication of JPS55117361A publication Critical patent/JPS55117361A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • H04M3/14—Signalling existence of persistent "off-hook" condition

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To simplify the circuit constitution and reduce the size of the false call unit greatly by giving the control to each action of the false call unit as well as the oscillation start and stop of the false call unit via the transmission signal sent from the channel of the exchange. CONSTITUTION:The false call generation control to generate the false call with the control given from terminal unit 38 is given to the communication exchange circuit network of exchange 30. In this case, false circuits LNO, LN1-LNn which are connected via the same interface as that of circuit correspondence part 36 are provided to circuit process part 34 of exchange 30. False call unit 42 features the function to given the false action via circuits LNO-LNn to the subscriber unit and the trunk unit against exchange 30. Here the transmission signal sent from channel 32 of exchange 30 gives the control to the start/stop of transmission of unit 42 plus each action of unit 42. As a result, the circuit constitution can be simplified, at the same time reducing greatly the size of the false call unit.
JP2417379A 1979-03-02 1979-03-02 False call control system Pending JPS55117361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2417379A JPS55117361A (en) 1979-03-02 1979-03-02 False call control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2417379A JPS55117361A (en) 1979-03-02 1979-03-02 False call control system

Publications (1)

Publication Number Publication Date
JPS55117361A true JPS55117361A (en) 1980-09-09

Family

ID=12130949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2417379A Pending JPS55117361A (en) 1979-03-02 1979-03-02 False call control system

Country Status (1)

Country Link
JP (1) JPS55117361A (en)

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