JPS5725760A - Relieving system of system breakdown - Google Patents

Relieving system of system breakdown

Info

Publication number
JPS5725760A
JPS5725760A JP10020580A JP10020580A JPS5725760A JP S5725760 A JPS5725760 A JP S5725760A JP 10020580 A JP10020580 A JP 10020580A JP 10020580 A JP10020580 A JP 10020580A JP S5725760 A JPS5725760 A JP S5725760A
Authority
JP
Japan
Prior art keywords
inter
trunk line
extension
office trunk
station
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
JP10020580A
Other languages
Japanese (ja)
Inventor
Bunshiro Igarashi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10020580A priority Critical patent/JPS5725760A/en
Publication of JPS5725760A publication Critical patent/JPS5725760A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

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

Abstract

PURPOSE:To secure a communication of the minimum limit for a faulty station, by connecting automatically a specific extension decided previously to an inter-office trunk line with no intervention of an own exchange in case a fault arises and having the same handling as an extension of a normal station. CONSTITUTION:A controller CONT0 detects that an exchange EX0 becomes incapable of its working and gives an indication to a monitor signal device SV0 to send a system breakdown data to another station EX1. At the same time, the CONT0 actuates emergency changeover relays SW0 and SW1 to connect an inter- office trunk line to an emergency telephone SUB0 decided previously and via a route of an in-hand ringer INBR0-sw1-LTRK0-sw0. On the other hand, the EX1 receives the data from the SV0 through the device SV1 and relays it to the device CONT1. The CONT1 gives an indication to the control part of the EX1 to handle the inter-office trunk line as an extension.
JP10020580A 1980-07-22 1980-07-22 Relieving system of system breakdown Pending JPS5725760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10020580A JPS5725760A (en) 1980-07-22 1980-07-22 Relieving system of system breakdown

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10020580A JPS5725760A (en) 1980-07-22 1980-07-22 Relieving system of system breakdown

Publications (1)

Publication Number Publication Date
JPS5725760A true JPS5725760A (en) 1982-02-10

Family

ID=14267798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10020580A Pending JPS5725760A (en) 1980-07-22 1980-07-22 Relieving system of system breakdown

Country Status (1)

Country Link
JP (1) JPS5725760A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014165643A (en) * 2013-02-25 2014-09-08 Nec Engineering Ltd First audio server, second audio server, audio terminal, audio communication system, audio communication method, and computer program

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014165643A (en) * 2013-02-25 2014-09-08 Nec Engineering Ltd First audio server, second audio server, audio terminal, audio communication system, audio communication method, and computer program

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