JPS5715558A - Continuity test system - Google Patents

Continuity test system

Info

Publication number
JPS5715558A
JPS5715558A JP8920380A JP8920380A JPS5715558A JP S5715558 A JPS5715558 A JP S5715558A JP 8920380 A JP8920380 A JP 8920380A JP 8920380 A JP8920380 A JP 8920380A JP S5715558 A JPS5715558 A JP S5715558A
Authority
JP
Japan
Prior art keywords
lead
signal
outputted
ring back
back tone
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
JP8920380A
Other languages
Japanese (ja)
Inventor
Takao Kato
Tetsuo Takemura
Akira Horiki
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 JP8920380A priority Critical patent/JPS5715558A/en
Publication of JPS5715558A publication Critical patent/JPS5715558A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To realize complete continuity guarantee between terminals, by generating the callout tone with a signal transmitted or folded for the specific signal to a network, in response to the incoming display from a telephone network and displaying the incoming call. CONSTITUTION:When an incoming call is detected at a signal analysis circuit section and an incoming signal display lead 504 is turned on, the output of a ring back tone generating circuit 305 is outputted to a transmission signal lead 501, and the ring back tone folded from the opposing terminal is applied to a lead 502 and outputted as a callout signal from a receiver 102. The ring back tone transmitted from a telephone set to be called is applied to the lead 502 and outputted to the receiver 102. The ring back tone from the caller party applied to the lead 502 is outputted to the transmission lead 501.
JP8920380A 1980-07-02 1980-07-02 Continuity test system Pending JPS5715558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8920380A JPS5715558A (en) 1980-07-02 1980-07-02 Continuity test system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8920380A JPS5715558A (en) 1980-07-02 1980-07-02 Continuity test system

Publications (1)

Publication Number Publication Date
JPS5715558A true JPS5715558A (en) 1982-01-26

Family

ID=13964153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8920380A Pending JPS5715558A (en) 1980-07-02 1980-07-02 Continuity test system

Country Status (1)

Country Link
JP (1) JPS5715558A (en)

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