JPS56109063A - Test system for analog trunk - Google Patents

Test system for analog trunk

Info

Publication number
JPS56109063A
JPS56109063A JP1087580A JP1087580A JPS56109063A JP S56109063 A JPS56109063 A JP S56109063A JP 1087580 A JP1087580 A JP 1087580A JP 1087580 A JP1087580 A JP 1087580A JP S56109063 A JPS56109063 A JP S56109063A
Authority
JP
Japan
Prior art keywords
test
signal
tdsw
input
time sharing
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
JP1087580A
Other languages
Japanese (ja)
Inventor
Keiichi Miyahara
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 JP1087580A priority Critical patent/JPS56109063A/en
Publication of JPS56109063A publication Critical patent/JPS56109063A/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 enable to perform the test of TRK without operating through TDSW, by providing the test device designating the test channel CH between the analog trunk TRK and the digitial switching network TDSW. CONSTITUTION:In a digital telephone exchanger, the time sharing multiplex output of the multiplexer 13 and the input time sharing multiplex PCM series from TDSW 14 to the demultiplexer 15, are branched 21, 22 and fed to the test device 20. Similarly, the time sharing multiplex digital stream among the channel system controller 17, scan signal multiplex circuit 16 and signal distribution circuit 18, is branched 23, 24 and input to the device 20. The data of the test CH is designated with the signal from the CH number selection circuit 25 with the operation of the test panel 26, the PCM data of the test CH is made to analog audio signal at the PCM demodulators 27, 28, and the DC line signal is buffering at the signal buffer circuit 29 and input to the test panel 26. Thus, the test of TRK11 can be made not through TDSW14 without giving effect on the communication.
JP1087580A 1980-02-01 1980-02-01 Test system for analog trunk Pending JPS56109063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1087580A JPS56109063A (en) 1980-02-01 1980-02-01 Test system for analog trunk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1087580A JPS56109063A (en) 1980-02-01 1980-02-01 Test system for analog trunk

Publications (1)

Publication Number Publication Date
JPS56109063A true JPS56109063A (en) 1981-08-29

Family

ID=11762500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1087580A Pending JPS56109063A (en) 1980-02-01 1980-02-01 Test system for analog trunk

Country Status (1)

Country Link
JP (1) JPS56109063A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621487U (en) * 1992-03-18 1994-03-22 東京端一株式会社 Curtain operation string display and operation string

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0621487U (en) * 1992-03-18 1994-03-22 東京端一株式会社 Curtain operation string display and operation string

Similar Documents

Publication Publication Date Title
ES407164A1 (en) Time division switching system
JPS5477013A (en) Transmission system for picture sound
ES478733A1 (en) Distributed control digital switching system
SE7900617L (en) TIME MULTIPLEX TELEPHONE SWITCH SYSTEM
ES8106992A1 (en) Diagnostic circuit for PCM connection networks.
DE3879175D1 (en) DIGITAL BUTTON INTERCOM.
JPS56109063A (en) Test system for analog trunk
JPS5474616A (en) Tester for digital incoming line
SE8307174D0 (en) DIGITAL MULTIPLEX DEVICE DIGITAL MULTIPLEX DEVICE
SE7712624L (en) CONCENTRATOR-DECENTCENTRATOR DEVICE AND A SATELLITE INCLUDING SUCH A DEVICE
GB980029A (en) Line concentrator and its associated circuits in a time multiplex transmission system
JPS55138955A (en) Time sharing channel interruption system
ES467423A1 (en) Distributed control for switching system
JPS5637797A (en) Time-division multiple exchange system
GB1511498A (en) Channel switching unit for a telephone switching centre and switching arrangements utilising such units
JPS57186892A (en) Digital line concentrating switch
JPS56138394A (en) Test system of time sharing exchanger spare system
JPS5558658A (en) Subscriber's line telephone transmission system
JPS56122599A (en) Loop switching network using data base device
JPS55133157A (en) Integrated transmission system for digital line
EP0226364A3 (en) A method of operating a telecommunication switching system or the like
JPS554187A (en) Test system
JPS56161752A (en) Key telephone set
JPS56110142A (en) Bus extention device
JPS56165483A (en) Initial setting system of exchange terminal device