JPS56115067A - Channel continuity test system - Google Patents

Channel continuity test system

Info

Publication number
JPS56115067A
JPS56115067A JP1778280A JP1778280A JPS56115067A JP S56115067 A JPS56115067 A JP S56115067A JP 1778280 A JP1778280 A JP 1778280A JP 1778280 A JP1778280 A JP 1778280A JP S56115067 A JPS56115067 A JP S56115067A
Authority
JP
Japan
Prior art keywords
subscriber
channel
pair
contact pair
continuity
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
JP1778280A
Other languages
Japanese (ja)
Inventor
Hatsuo Murata
Yoshinori Yoshida
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 JP1778280A priority Critical patent/JPS56115067A/en
Publication of JPS56115067A publication Critical patent/JPS56115067A/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
    • H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
    • H04M3/244—Arrangements for supervision, monitoring or testing with provision for checking the normal operation for multiplex systems

Landscapes

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

Abstract

PURPOSE:To realize a channel continuity test without increasing the delay time of the channel bus, by connecting the continuity of the channel bus caught beforehand for an incoming call through a subscriber circuit and the time-division channel and by means of the test relay contact pair and the ringing signal contact pair which are distributed correspondence to the subscriber. CONSTITUTION:Two test relay contact pairs 5 and 6 plus two ringing signal contact pair 7 and 8 are distributed to the subscriber circuits 3 and 4 connected to the time- division channel 1. Then the telephone current supply device 9, ringing signal transmitting device 10, analog signal transmitting device 11 and analog signal receiving device each are provided in common to the circuits 3 and 4. The device 9 is connected to the subscriber by one of the contact pair 5 and 6 and against the calling side, and at the same time the device 11 or 12 is connected to the subscriber by the other side of the pair 5 and 6. On the other hand, the device 10 is connected to the incoming side via one of the contact pair 7 and 8, and the device 11 or 12 is connected via the other side of the pair 7 and 8 respectively. Thus the channel bus continuity can be tested while the incoming subscriber is being called and without increasing the delay time for connection.
JP1778280A 1980-02-18 1980-02-18 Channel continuity test system Pending JPS56115067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1778280A JPS56115067A (en) 1980-02-18 1980-02-18 Channel continuity test system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1778280A JPS56115067A (en) 1980-02-18 1980-02-18 Channel continuity test system

Publications (1)

Publication Number Publication Date
JPS56115067A true JPS56115067A (en) 1981-09-10

Family

ID=11953282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1778280A Pending JPS56115067A (en) 1980-02-18 1980-02-18 Channel continuity test system

Country Status (1)

Country Link
JP (1) JPS56115067A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160145573A (en) 2014-04-14 2016-12-20 오일레스고교 가부시키가이샤 Rack guide and rack-and-pinion steering device provided with same rack guide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160145573A (en) 2014-04-14 2016-12-20 오일레스고교 가부시키가이샤 Rack guide and rack-and-pinion steering device provided with same rack guide

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