JPS5217708A - Link control system of semielectronic multiple automatic telephone swi tch board - Google Patents

Link control system of semielectronic multiple automatic telephone swi tch board

Info

Publication number
JPS5217708A
JPS5217708A JP9303875A JP9303875A JPS5217708A JP S5217708 A JPS5217708 A JP S5217708A JP 9303875 A JP9303875 A JP 9303875A JP 9303875 A JP9303875 A JP 9303875A JP S5217708 A JPS5217708 A JP S5217708A
Authority
JP
Japan
Prior art keywords
semielectronic
board
control system
link control
automatic telephone
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
JP9303875A
Other languages
Japanese (ja)
Inventor
Hirotoshi Shirasu
Osamu Kaneko
Akihiro Usui
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 JP9303875A priority Critical patent/JPS5217708A/en
Publication of JPS5217708A publication Critical patent/JPS5217708A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)

Abstract

PURPOSE:By means of the fault earth current test lead in the switchboard, and adding pre-excitation to the hold magnet of the link, the activation time of the Cross-switch will be shortened.
JP9303875A 1975-08-01 1975-08-01 Link control system of semielectronic multiple automatic telephone swi tch board Pending JPS5217708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9303875A JPS5217708A (en) 1975-08-01 1975-08-01 Link control system of semielectronic multiple automatic telephone swi tch board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9303875A JPS5217708A (en) 1975-08-01 1975-08-01 Link control system of semielectronic multiple automatic telephone swi tch board

Publications (1)

Publication Number Publication Date
JPS5217708A true JPS5217708A (en) 1977-02-09

Family

ID=14071315

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9303875A Pending JPS5217708A (en) 1975-08-01 1975-08-01 Link control system of semielectronic multiple automatic telephone swi tch board

Country Status (1)

Country Link
JP (1) JPS5217708A (en)

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