JPS5510231A - Test system for data transmission system - Google Patents

Test system for data transmission system

Info

Publication number
JPS5510231A
JPS5510231A JP8255278A JP8255278A JPS5510231A JP S5510231 A JPS5510231 A JP S5510231A JP 8255278 A JP8255278 A JP 8255278A JP 8255278 A JP8255278 A JP 8255278A JP S5510231 A JPS5510231 A JP S5510231A
Authority
JP
Japan
Prior art keywords
terminal
signal
test
data transmission
tests
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
JP8255278A
Other languages
Japanese (ja)
Inventor
Ken Murayama
Yoshimitsu Okano
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 JP8255278A priority Critical patent/JPS5510231A/en
Publication of JPS5510231A publication Critical patent/JPS5510231A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE:To enable even a data transmission system with the start signal short to detect a test signal within the normal rise-up time, by suppressing the transmission of data to a terminal equipment by an initial signal. CONSTITUTION:In the test system for the data transmission system which makes tests of a tested terminal by forming a loop from the testing equipment to the tested terminal, the transmission part of the testing terminal sends out an initial signal from terminal 22 before transmitting a test signal. The reception part of the tested terminal, on the other hand, receives the initial signal at terminal 23 and then suppresses the supply of data signals to the terminal equipment by using the received signal. On receiving a signal indicating the tests, the reception part suppresses the supply of the data signals to the terminal equipment by using the received signal until the tests end. In this way, coordination with the starting time is brought about by using the initial signal.
JP8255278A 1978-07-07 1978-07-07 Test system for data transmission system Pending JPS5510231A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8255278A JPS5510231A (en) 1978-07-07 1978-07-07 Test system for data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8255278A JPS5510231A (en) 1978-07-07 1978-07-07 Test system for data transmission system

Publications (1)

Publication Number Publication Date
JPS5510231A true JPS5510231A (en) 1980-01-24

Family

ID=13777654

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8255278A Pending JPS5510231A (en) 1978-07-07 1978-07-07 Test system for data transmission system

Country Status (1)

Country Link
JP (1) JPS5510231A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723142A (en) * 1980-07-17 1982-02-06 Fujitsu Ltd Test printing system of receiving printer
JPH02154551A (en) * 1988-12-06 1990-06-13 Nec Corp Test access circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723142A (en) * 1980-07-17 1982-02-06 Fujitsu Ltd Test printing system of receiving printer
JPS5757737B2 (en) * 1980-07-17 1982-12-06 Fujitsu Ltd
JPH02154551A (en) * 1988-12-06 1990-06-13 Nec Corp Test access circuit

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