JPS54100611A - Circuit-blocking control system - Google Patents

Circuit-blocking control system

Info

Publication number
JPS54100611A
JPS54100611A JP709578A JP709578A JPS54100611A JP S54100611 A JPS54100611 A JP S54100611A JP 709578 A JP709578 A JP 709578A JP 709578 A JP709578 A JP 709578A JP S54100611 A JPS54100611 A JP S54100611A
Authority
JP
Japan
Prior art keywords
circuit
output
blocking control
blocking
block
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.)
Granted
Application number
JP709578A
Other languages
Japanese (ja)
Other versions
JPS619784B2 (en
Inventor
Takuto Kojima
Toru Masuda
Yukio Ozawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP709578A priority Critical patent/JPS54100611A/en
Publication of JPS54100611A publication Critical patent/JPS54100611A/en
Publication of JPS619784B2 publication Critical patent/JPS619784B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To block a circuit regardless of whether the circuit is in use or not, under the control that a central processor writes a block instruction into a blocking control circuit. CONSTITUTION:Cental processor CC sends out control signals (spc) and (lac) for series-parallel converter circuit SP and latch circuit LA to blocking control circuit B first, and then sends out information (sd) indicating the class of a subscriber to sp. By sp, information (sd) is converted into parallel one and transferred to LA, the output of which is used for the assignment of the class of a subscriber's telephone set to be blocked. Once blocking command (bs) is transmitted from (cc), FF of blocking control circuit B is set and bus driver D1 is driven by the set output to send a block signal to SUB1. If SUB1 is in an on-hook state, the output of loop detection circuit LD is ''0'' and, in consequence, output Q of RSFF is also ''0'' and AG1 does not conduct and is blocked.
JP709578A 1978-01-25 1978-01-25 Circuit-blocking control system Granted JPS54100611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP709578A JPS54100611A (en) 1978-01-25 1978-01-25 Circuit-blocking control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP709578A JPS54100611A (en) 1978-01-25 1978-01-25 Circuit-blocking control system

Publications (2)

Publication Number Publication Date
JPS54100611A true JPS54100611A (en) 1979-08-08
JPS619784B2 JPS619784B2 (en) 1986-03-26

Family

ID=11656510

Family Applications (1)

Application Number Title Priority Date Filing Date
JP709578A Granted JPS54100611A (en) 1978-01-25 1978-01-25 Circuit-blocking control system

Country Status (1)

Country Link
JP (1) JPS54100611A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864857A (en) * 1981-10-15 1983-04-18 Oki Electric Ind Co Ltd Total heat generation value restricting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07192824A (en) * 1993-12-24 1995-07-28 Toshiyuki Kosaka Socket box and socket cover having mothproof function

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230680B2 (en) * 1974-05-29 1977-08-09
JPS5325798A (en) * 1976-08-23 1978-03-09 Mitsui Mining & Smelting Co Ltd Shielding material for radioactive ray

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230680B2 (en) * 1974-05-29 1977-08-09
JPS5325798A (en) * 1976-08-23 1978-03-09 Mitsui Mining & Smelting Co Ltd Shielding material for radioactive ray

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864857A (en) * 1981-10-15 1983-04-18 Oki Electric Ind Co Ltd Total heat generation value restricting device
JPH0218629B2 (en) * 1981-10-15 1990-04-26 Oki Denki Kogyo Kk

Also Published As

Publication number Publication date
JPS619784B2 (en) 1986-03-26

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