JPS5530202A - Emergency reception system - Google Patents

Emergency reception system

Info

Publication number
JPS5530202A
JPS5530202A JP10035578A JP10035578A JPS5530202A JP S5530202 A JPS5530202 A JP S5530202A JP 10035578 A JP10035578 A JP 10035578A JP 10035578 A JP10035578 A JP 10035578A JP S5530202 A JPS5530202 A JP S5530202A
Authority
JP
Japan
Prior art keywords
board
manual
wire
incoming call
automatic
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
JP10035578A
Other languages
Japanese (ja)
Other versions
JPS5923508B2 (en
Inventor
Toshihiko Nakajo
Shozo Nishimura
Yoshifumi Kubo
Tadao Ishii
Tsuguo Muramoto
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 JP10035578A priority Critical patent/JPS5923508B2/en
Publication of JPS5530202A publication Critical patent/JPS5530202A/en
Publication of JPS5923508B2 publication Critical patent/JPS5923508B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To enable a manual B board to answer to an incoming call by disconnecting a line wire from an automatic switchboad, getting out of order, and then by forming a connecting line reaching the manual B board. CONSTITUTION:When the automatic switchboard with channel network NW is in normal operation, emergency switching key TL is in a closed state. If an energency situation, e.g., a disabled switching connection due to the fault of the automatic switchboard occurs, an operator operates key TL to open the contact. As a result, respective relays TLo to TLn and TLa of emergency switching unit ESo to ESn and ESa are all released by being disconnected from the earth and their contacts tlo to tln and tla return to positions shown by solid lines. When an incoming call arrives from main wire CLo in this state, the incoming call from main wire CLo is displayed on emergence B board operation table ED by main-wire trunk COTo and the operator operates the switch method to make a connection between the incoming circuit and manual B board ATT.
JP10035578A 1978-08-17 1978-08-17 Emergency reception method Expired JPS5923508B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10035578A JPS5923508B2 (en) 1978-08-17 1978-08-17 Emergency reception method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10035578A JPS5923508B2 (en) 1978-08-17 1978-08-17 Emergency reception method

Publications (2)

Publication Number Publication Date
JPS5530202A true JPS5530202A (en) 1980-03-04
JPS5923508B2 JPS5923508B2 (en) 1984-06-02

Family

ID=14271780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10035578A Expired JPS5923508B2 (en) 1978-08-17 1978-08-17 Emergency reception method

Country Status (1)

Country Link
JP (1) JPS5923508B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57206162A (en) * 1981-06-15 1982-12-17 Fujitsu Ltd Emergency switching system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57206162A (en) * 1981-06-15 1982-12-17 Fujitsu Ltd Emergency switching system
JPH021416B2 (en) * 1981-06-15 1990-01-11 Fujitsu Ltd

Also Published As

Publication number Publication date
JPS5923508B2 (en) 1984-06-02

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