JPS56122259A - Channel test system by off-line constitution - Google Patents

Channel test system by off-line constitution

Info

Publication number
JPS56122259A
JPS56122259A JP2518880A JP2518880A JPS56122259A JP S56122259 A JPS56122259 A JP S56122259A JP 2518880 A JP2518880 A JP 2518880A JP 2518880 A JP2518880 A JP 2518880A JP S56122259 A JPS56122259 A JP S56122259A
Authority
JP
Japan
Prior art keywords
test
normal service
channel
stand
disconnected
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
JP2518880A
Other languages
Japanese (ja)
Inventor
Ikuo Sato
Satoru Kuge
Susumu Tachimori
Isao Shinpo
Yoji Tsuboi
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
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP2518880A priority Critical patent/JPS56122259A/en
Publication of JPS56122259A publication Critical patent/JPS56122259A/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 obtain a high-reliability exchange system, by providing a stand-by for the service system device to perform the channel test for the faulty device independently of the normal service. CONSTITUTION:When channel control device 11 in normal service becomes faulty, stored lines 1a and 1c are switched to stand-by channel control device 10, and device 11 is disconnected from the normal service system. Divice 11 is disconnected temporarily from processing devices 31-33 by control information. Stand-by time division junctor device 20 is used to perform the channel test for the fault. Devices 11 and 20 related to the test are controlled and processed by processing device 33, and processing device 33 is disconnected from processing devices 31 and 32 and becomes independent, and the normal service which is not related to the test is performed by control processing devices 31 and 32.
JP2518880A 1980-03-03 1980-03-03 Channel test system by off-line constitution Pending JPS56122259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2518880A JPS56122259A (en) 1980-03-03 1980-03-03 Channel test system by off-line constitution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2518880A JPS56122259A (en) 1980-03-03 1980-03-03 Channel test system by off-line constitution

Publications (1)

Publication Number Publication Date
JPS56122259A true JPS56122259A (en) 1981-09-25

Family

ID=12158990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2518880A Pending JPS56122259A (en) 1980-03-03 1980-03-03 Channel test system by off-line constitution

Country Status (1)

Country Link
JP (1) JPS56122259A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442518A (en) * 1980-04-28 1984-04-10 Nippon Electric Company, Ltd. Channel switching system for use in a digital communication system
JPS59144255A (en) * 1983-02-07 1984-08-18 Nec Corp Extension testing system of electronic exchange
US5004951A (en) * 1989-01-31 1991-04-02 Toshiba Lighting & Technology Corporation Single side-sealed metal vapor discharge lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442518A (en) * 1980-04-28 1984-04-10 Nippon Electric Company, Ltd. Channel switching system for use in a digital communication system
JPS59144255A (en) * 1983-02-07 1984-08-18 Nec Corp Extension testing system of electronic exchange
US5004951A (en) * 1989-01-31 1991-04-02 Toshiba Lighting & Technology Corporation Single side-sealed metal vapor discharge lamp

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