JPS562773A - Switchboard control system - Google Patents

Switchboard control system

Info

Publication number
JPS562773A
JPS562773A JP7800279A JP7800279A JPS562773A JP S562773 A JPS562773 A JP S562773A JP 7800279 A JP7800279 A JP 7800279A JP 7800279 A JP7800279 A JP 7800279A JP S562773 A JPS562773 A JP S562773A
Authority
JP
Japan
Prior art keywords
switchboard
main body
operator
polarity
information
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
JP7800279A
Other languages
English (en)
Inventor
Atsuhisa Takahashi
Yusuke Ogata
Shinichi Ito
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 JP7800279A priority Critical patent/JPS562773A/ja
Publication of JPS562773A publication Critical patent/JPS562773A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP7800279A 1979-06-22 1979-06-22 Switchboard control system Pending JPS562773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7800279A JPS562773A (en) 1979-06-22 1979-06-22 Switchboard control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7800279A JPS562773A (en) 1979-06-22 1979-06-22 Switchboard control system

Publications (1)

Publication Number Publication Date
JPS562773A true JPS562773A (en) 1981-01-13

Family

ID=13649583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7800279A Pending JPS562773A (en) 1979-06-22 1979-06-22 Switchboard control system

Country Status (1)

Country Link
JP (1) JPS562773A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972266A (ja) * 1982-10-18 1984-04-24 Nec Corp 電話中継台の扱者在席検出回路
JPS60117857A (ja) * 1983-11-29 1985-06-25 Fujitsu Ltd 交換台電源切断予告方式

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972266A (ja) * 1982-10-18 1984-04-24 Nec Corp 電話中継台の扱者在席検出回路
JPS60117857A (ja) * 1983-11-29 1985-06-25 Fujitsu Ltd 交換台電源切断予告方式
JPH0326586B2 (ja) * 1983-11-29 1991-04-11 Fujitsu Ltd

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