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JPS57147360A - Testing system for interface part of digital switchboard - Google Patents

Testing system for interface part of digital switchboard

Info

Publication number
JPS57147360A
JPS57147360A JP3337681A JP3337681A JPS57147360A JP S57147360 A JPS57147360 A JP S57147360A JP 3337681 A JP3337681 A JP 3337681A JP 3337681 A JP3337681 A JP 3337681A JP S57147360 A JPS57147360 A JP S57147360A
Authority
JP
Japan
Prior art keywords
interface part
controlling means
outgoing
time
digital interface
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
JP3337681A
Other languages
Japanese (ja)
Inventor
Kenji Nojiri
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 JP3337681A priority Critical patent/JPS57147360A/en
Publication of JPS57147360A publication Critical patent/JPS57147360A/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 test a digital interface part easily without using a special circuit testing equipment, etc., by providing a time controlling means to a digital interface part. CONSTITUTION:When a calling subscriber 100 performs outgoing connection operation, a central controller 108 selects and acquires an outgoing circuit. At the side of the transmission line 107 of a digital interface part 105, transmission and reception sending-back connection is made, so a time controlling means 106 changes an origination start signal into an incoming signal to another time slot immediately. When the calling subscriber 100 dials the number of a called subscriber 103, the center controller 108 performs incoming connection to complete outgoing and incoming connection in the station. This channel is a one-way one, but when a one-way telephone call is excellent, the in-use time slot path of the interface part 105 is judged to be normal. The time controlling means 106 replaces time slots adequately to test all of multiplex time slots of the interface part 105.
JP3337681A 1981-03-09 1981-03-09 Testing system for interface part of digital switchboard Pending JPS57147360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3337681A JPS57147360A (en) 1981-03-09 1981-03-09 Testing system for interface part of digital switchboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3337681A JPS57147360A (en) 1981-03-09 1981-03-09 Testing system for interface part of digital switchboard

Publications (1)

Publication Number Publication Date
JPS57147360A true JPS57147360A (en) 1982-09-11

Family

ID=12384865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3337681A Pending JPS57147360A (en) 1981-03-09 1981-03-09 Testing system for interface part of digital switchboard

Country Status (1)

Country Link
JP (1) JPS57147360A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0171803A2 (en) * 1984-08-15 1986-02-19 Fujitsu Limited Time division exchange for carrying out a loop-back test

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0171803A2 (en) * 1984-08-15 1986-02-19 Fujitsu Limited Time division exchange for carrying out a loop-back test
JPS6148266A (en) * 1984-08-15 1986-03-08 Fujitsu Ltd Time division multiplex line loop back test method

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