JPS5721151A - Test information transmitting system in time division exchanger - Google Patents

Test information transmitting system in time division exchanger

Info

Publication number
JPS5721151A
JPS5721151A JP9508780A JP9508780A JPS5721151A JP S5721151 A JPS5721151 A JP S5721151A JP 9508780 A JP9508780 A JP 9508780A JP 9508780 A JP9508780 A JP 9508780A JP S5721151 A JPS5721151 A JP S5721151A
Authority
JP
Japan
Prior art keywords
test
frequency
information
code
ltu10
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
JP9508780A
Other languages
Japanese (ja)
Inventor
Noriyuki Suga
Mitsuko Amano
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9508780A priority Critical patent/JPS5721151A/en
Publication of JPS5721151A publication Critical patent/JPS5721151A/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 transmit the test type information to a division distributing stage, by providing a code-frequency converter and frequency-code converter respectively with a subscriber line test stand LTE and a subscriber line test device LTU. CONSTITUTION:After a channel from a subscriber trunk SUBT6 to a subscriber SUB12 via an LTU10 is constituted for test, when the key of test desired is depressed from an LTE1, the LTU10 forms required information to execute the test, and a code-frequency converter CFC2 makes the conversion into the combination of a plurality of frequencies or modulated frequency which can pass through a time division switch TDSW5. This frequency information is given to the channel and comes to the LTU10 via a TDSW5, status monitor signal insertion device D/I13, SUBT6, line concentration switch LSCW7. The LTU10 converts information into again a code information with a frequency-code converter FCC11, judges the types of test and prepares the reception of information from subscribers.
JP9508780A 1980-07-14 1980-07-14 Test information transmitting system in time division exchanger Pending JPS5721151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9508780A JPS5721151A (en) 1980-07-14 1980-07-14 Test information transmitting system in time division exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9508780A JPS5721151A (en) 1980-07-14 1980-07-14 Test information transmitting system in time division exchanger

Publications (1)

Publication Number Publication Date
JPS5721151A true JPS5721151A (en) 1982-02-03

Family

ID=14128143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9508780A Pending JPS5721151A (en) 1980-07-14 1980-07-14 Test information transmitting system in time division exchanger

Country Status (1)

Country Link
JP (1) JPS5721151A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593309A (en) * 1982-10-21 1986-06-03 Tokyo Shibaura Denki Kabushiki Kaisha Method of convergence measurement for a color picture tube and an apparatus therefor
JPS63254847A (en) * 1987-04-10 1988-10-21 Nec Corp Channel test system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593309A (en) * 1982-10-21 1986-06-03 Tokyo Shibaura Denki Kabushiki Kaisha Method of convergence measurement for a color picture tube and an apparatus therefor
JPS63254847A (en) * 1987-04-10 1988-10-21 Nec Corp Channel test system

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