JPS5665560A - Test system of time sharing multiplex line directly accommodated in time sharing exchanger - Google Patents

Test system of time sharing multiplex line directly accommodated in time sharing exchanger

Info

Publication number
JPS5665560A
JPS5665560A JP14044479A JP14044479A JPS5665560A JP S5665560 A JPS5665560 A JP S5665560A JP 14044479 A JP14044479 A JP 14044479A JP 14044479 A JP14044479 A JP 14044479A JP S5665560 A JPS5665560 A JP S5665560A
Authority
JP
Japan
Prior art keywords
time sharing
line
handset
converter
signal
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
JP14044479A
Other languages
Japanese (ja)
Inventor
Keiichi Miyahara
Kunitoshi Otsuki
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 JP14044479A priority Critical patent/JPS5665560A/en
Publication of JPS5665560A publication Critical patent/JPS5665560A/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)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To make small in size and simplify the channel test circuit at line and time sharing exchanger side, by inserting and picking up the signal on designated line only through the conversion circuit of analog and digital signal through the inserter.dropper. CONSTITUTION:When the line side of a time sharing multiplex line 1 is tested, first the time sharing multiplex signal input from the reception terminal gamma is received and only the signal of the time slot T corresponding to tested line is transferred to an A/D and D/A converter 4 through an inserter.dropper 2b at the line side. Further, it is D/A-converted at the converter 4 and received at handset 6. Further, the signal from the handset 6 is A/D-converted at the converter 4, inserted to the time slot T with the inserter.dropper 2a at the feeding line side and transmitted from an output terminal alpha. Thus, the channels between the handset 6 and the subscribers at the line can be assured. Further, in testing the exchanger side, it is similarly made by using a D/A converter 5 and a handset 7.
JP14044479A 1979-11-01 1979-11-01 Test system of time sharing multiplex line directly accommodated in time sharing exchanger Pending JPS5665560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14044479A JPS5665560A (en) 1979-11-01 1979-11-01 Test system of time sharing multiplex line directly accommodated in time sharing exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14044479A JPS5665560A (en) 1979-11-01 1979-11-01 Test system of time sharing multiplex line directly accommodated in time sharing exchanger

Publications (1)

Publication Number Publication Date
JPS5665560A true JPS5665560A (en) 1981-06-03

Family

ID=15268770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14044479A Pending JPS5665560A (en) 1979-11-01 1979-11-01 Test system of time sharing multiplex line directly accommodated in time sharing exchanger

Country Status (1)

Country Link
JP (1) JPS5665560A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474615A (en) * 1977-11-28 1979-06-14 Nippon Telegr & Teleph Corp <Ntt> Test system for digital line
JPS5474616A (en) * 1977-11-28 1979-06-14 Nippon Telegr & Teleph Corp <Ntt> Tester for digital incoming line

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474615A (en) * 1977-11-28 1979-06-14 Nippon Telegr & Teleph Corp <Ntt> Test system for digital line
JPS5474616A (en) * 1977-11-28 1979-06-14 Nippon Telegr & Teleph Corp <Ntt> Tester for digital incoming line

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