JPS5583392A - Switching control system - Google Patents

Switching control system

Info

Publication number
JPS5583392A
JPS5583392A JP15889178A JP15889178A JPS5583392A JP S5583392 A JPS5583392 A JP S5583392A JP 15889178 A JP15889178 A JP 15889178A JP 15889178 A JP15889178 A JP 15889178A JP S5583392 A JPS5583392 A JP S5583392A
Authority
JP
Japan
Prior art keywords
relays
pattern
trunk
control part
output
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
JP15889178A
Other languages
Japanese (ja)
Inventor
Shigeki Hashimoto
Moritaka Ippongi
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 JP15889178A priority Critical patent/JPS5583392A/en
Publication of JPS5583392A publication Critical patent/JPS5583392A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To relax the limitations of mounting a truck without increasing the scale of a central controller by providing a control part controlling a pattern relay in a trunk circuit and then by fixing a control point to one regardless of the number of pattern relays. CONSTITUTION:Incoming trunk ICT of an automatic telephone exchange exercising pattern control over a trunk circuit is provided with pattern relays S and T forming several patterns. Further, signal control part CONT is provided which controls relays S and T by receiving a driving command from relay driver RC, and multiple pulses of input pulses are generated by T type FF1 provided to this control part CONT. Furhter, JK-type FF2 supplied with the output of FF1 generates double pulses and the output of FF2 is applied to a logic circuit, whose output controls respecitve relays S and T. Consequently, the number of control point is fixed to one and the limitation of mounting a trunk is relaxed without increasing the scale of unit RC.
JP15889178A 1978-12-20 1978-12-20 Switching control system Pending JPS5583392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15889178A JPS5583392A (en) 1978-12-20 1978-12-20 Switching control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15889178A JPS5583392A (en) 1978-12-20 1978-12-20 Switching control system

Publications (1)

Publication Number Publication Date
JPS5583392A true JPS5583392A (en) 1980-06-23

Family

ID=15681631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15889178A Pending JPS5583392A (en) 1978-12-20 1978-12-20 Switching control system

Country Status (1)

Country Link
JP (1) JPS5583392A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03115825U (en) * 1990-03-12 1991-12-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03115825U (en) * 1990-03-12 1991-12-02

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