JPS5776965A - Emergency reception control system - Google Patents

Emergency reception control system

Info

Publication number
JPS5776965A
JPS5776965A JP15287380A JP15287380A JPS5776965A JP S5776965 A JPS5776965 A JP S5776965A JP 15287380 A JP15287380 A JP 15287380A JP 15287380 A JP15287380 A JP 15287380A JP S5776965 A JPS5776965 A JP S5776965A
Authority
JP
Japan
Prior art keywords
relay
response
activated
line
incoming
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
JP15287380A
Other languages
Japanese (ja)
Other versions
JPS615308B2 (en
Inventor
Katsuaki Fuji
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 JP15287380A priority Critical patent/JPS5776965A/en
Publication of JPS5776965A publication Critical patent/JPS5776965A/en
Publication of JPS615308B2 publication Critical patent/JPS615308B2/ja
Granted 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)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To avoid the disconnection during call, by providing an incoming relay, response relay and response auxiliary relay, and continuing the response state of an emergency reception circuit to an external line at the insertion of plug of a cord connection switchboard. CONSTITUTION:When a plug P is inserted to a jack J, a relay R2 is activated. An auxiliary relay RA is activated through the operation of the relay R2. When a response key S1 is inserted with the illumination of an incoming lamp L3, a relay ANA is activated, a response lamp L4 is illuminated and the incoming lamp L3 is distinguished. When a caller hooks on, the line is kept holding, and when a re- callout key S2 is depressed, the R2, RA are restored and a relay CS is restored by cutting off the line A from magnetism.
JP15287380A 1980-10-30 1980-10-30 Emergency reception control system Granted JPS5776965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15287380A JPS5776965A (en) 1980-10-30 1980-10-30 Emergency reception control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15287380A JPS5776965A (en) 1980-10-30 1980-10-30 Emergency reception control system

Publications (2)

Publication Number Publication Date
JPS5776965A true JPS5776965A (en) 1982-05-14
JPS615308B2 JPS615308B2 (en) 1986-02-17

Family

ID=15549980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15287380A Granted JPS5776965A (en) 1980-10-30 1980-10-30 Emergency reception control system

Country Status (1)

Country Link
JP (1) JPS5776965A (en)

Also Published As

Publication number Publication date
JPS615308B2 (en) 1986-02-17

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