JPS56104563A - Test system for digital tripartite service trunk - Google Patents

Test system for digital tripartite service trunk

Info

Publication number
JPS56104563A
JPS56104563A JP692580A JP692580A JPS56104563A JP S56104563 A JPS56104563 A JP S56104563A JP 692580 A JP692580 A JP 692580A JP 692580 A JP692580 A JP 692580A JP S56104563 A JPS56104563 A JP S56104563A
Authority
JP
Japan
Prior art keywords
pcm
tdsw
registers
digital
given
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
JP692580A
Other languages
Japanese (ja)
Inventor
Kenji Meguro
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 JP692580A priority Critical patent/JPS56104563A/en
Publication of JPS56104563A publication Critical patent/JPS56104563A/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)
  • Interface Circuits In Exchanges (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To perform the test easily and minutely, by providing plural PCM pulse generating means and the digital frequency detecting means which receives the PCM sequence which is the sum of frequencies of these means. CONSTITUTION:PCM data from PCM pulse generating circuits PGG1 and PGG2 ar given to tripartite service trunk 3WT in time division through digital switch network TDSW. This 3WT latches these data in two out of registers A-C. Outputs obtained from two registers are added by one out of address ADD1-3, and the addition result is given to TDSW after latched in one out of registers A'-C'. TDSW leads given PCM data to digital frequency detector DET by switching it to time slot T3. Thus, the digital frequency is checked according to the combination state of received PCM data by DET, thereby diagnosing whether 3WT is correct or not.
JP692580A 1980-01-25 1980-01-25 Test system for digital tripartite service trunk Pending JPS56104563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP692580A JPS56104563A (en) 1980-01-25 1980-01-25 Test system for digital tripartite service trunk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP692580A JPS56104563A (en) 1980-01-25 1980-01-25 Test system for digital tripartite service trunk

Publications (1)

Publication Number Publication Date
JPS56104563A true JPS56104563A (en) 1981-08-20

Family

ID=11651817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP692580A Pending JPS56104563A (en) 1980-01-25 1980-01-25 Test system for digital tripartite service trunk

Country Status (1)

Country Link
JP (1) JPS56104563A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037985U (en) * 1983-08-19 1985-03-15 三洋電機株式会社 Three-way trunk circuit
JPS60109959A (en) * 1983-11-19 1985-06-15 Fujitsu Ltd Test method of three-party talking device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037985U (en) * 1983-08-19 1985-03-15 三洋電機株式会社 Three-way trunk circuit
JPH0328626Y2 (en) * 1983-08-19 1991-06-19
JPS60109959A (en) * 1983-11-19 1985-06-15 Fujitsu Ltd Test method of three-party talking device
JPH0326588B2 (en) * 1983-11-19 1991-04-11 Fujitsu Ltd

Similar Documents

Publication Publication Date Title
JPS56104563A (en) Test system for digital tripartite service trunk
DK140611B (en) Apparatus for detecting echo signals.
GB2007419A (en) System for generating sample tones on an electronic misical instrument
GB2008896A (en) Time division multiplex telephone exchange
SU606199A1 (en) Delay system
JPS5614795A (en) Channel system of decentralized control switchboard
JPS55136711A (en) Self-diagnosis unit for distributing amplifier
JPS57150263A (en) Continuity test system of digital board trunk
SU725258A1 (en) Cyclic phasing device
GB1354010A (en) Multifrequency signal receivers
SU1029407A2 (en) Pulse width discriminator
JPS5715296A (en) Testing system for storage device
JPS56107665A (en) Telephone set test system
JPS5775054A (en) Testing system for digital coference telephone connection device
JPS592477A (en) System for testing digital signal generator
JPS5549062A (en) Test system for subscriber's call meter
JPS5733500A (en) Information inspecting device of nonvolatile storage circuit
JPS5313324A (en) Input/output device
JPS5475911A (en) Time division multiplexconducting system
JPS57170635A (en) Radio telephone set
JPS5730015A (en) Generating system for operating time
JPS5472911A (en) Connection system between test equipment for subscribersigma line and trunk
DK140077A (en) PROCEDURE FOR THE PREPARATION OF 5,11-DIAZATETRACYCLO (6,2.2.02.7.0 4,9) DODECANER
JPS5567265A (en) Test system of automatic calling circuit
JPS5373037A (en) Monitor circuit system for printer