JPS56149831A - Duplex line switching unit - Google Patents

Duplex line switching unit

Info

Publication number
JPS56149831A
JPS56149831A JP5567380A JP5567380A JPS56149831A JP S56149831 A JPS56149831 A JP S56149831A JP 5567380 A JP5567380 A JP 5567380A JP 5567380 A JP5567380 A JP 5567380A JP S56149831 A JPS56149831 A JP S56149831A
Authority
JP
Japan
Prior art keywords
circuit
existing
receiving
switching
spare
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
JP5567380A
Other languages
Japanese (ja)
Other versions
JPS6048937B2 (en
Inventor
Satoshi Tanaka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5567380A priority Critical patent/JPS6048937B2/en
Publication of JPS56149831A publication Critical patent/JPS56149831A/en
Publication of JPS6048937B2 publication Critical patent/JPS6048937B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Abstract

PURPOSE:To switch a circuit of the own station, by providing each existing circuit and spare circuit on separate routes, also transmitting a switching command through the existing circuit of other station side or other switching command circuit, and receiving it by the other terminal equipment. CONSTITUTION:When an error occurs in the existing circuit 11 and a switching command is transmitted to the terminal equipment 27 through the other existing circuit 21, this command is received by the receiving circuit 24, the receiving circuit 24 outputs an other station switching control signal (d), and the relay circuit 15 is driven by this control signal (d), operates the switching contact 13, and switches the transmission circuit to the spare circuit 12 from the existing circuit 11. Also, when the receiving circuit is unable to receive the information for a prescribed time, a switching command signal (a) is output, and the relay circuit 15 is driven by this signal (a), operates the switching contact 13, and switches the existing circuit 11 connected to the receiving circuit 14, to the spare circuit 12.
JP5567380A 1980-04-23 1980-04-23 Duplex line switching device Expired JPS6048937B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5567380A JPS6048937B2 (en) 1980-04-23 1980-04-23 Duplex line switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5567380A JPS6048937B2 (en) 1980-04-23 1980-04-23 Duplex line switching device

Publications (2)

Publication Number Publication Date
JPS56149831A true JPS56149831A (en) 1981-11-19
JPS6048937B2 JPS6048937B2 (en) 1985-10-30

Family

ID=13005387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5567380A Expired JPS6048937B2 (en) 1980-04-23 1980-04-23 Duplex line switching device

Country Status (1)

Country Link
JP (1) JPS6048937B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011147762A2 (en) 2010-05-25 2011-12-01 Bayer Pharma Aktiengesellschaft Stabilized radiopharmaceutical composition

Also Published As

Publication number Publication date
JPS6048937B2 (en) 1985-10-30

Similar Documents

Publication Publication Date Title
ES8502556A1 (en) Testable optically isolated control circuit
JPS56149831A (en) Duplex line switching unit
JPS56104561A (en) Data transmission system
ES8608189A1 (en) Testable optically isolated control circuit
DE3881681D1 (en) DATA TRANSMISSION SYSTEM CONNECTABLE TO A TELEPHONE DIALING NETWORK.
JPS5797113A (en) Control circuit of air conditioner
JPS56104558A (en) Switching system of multitransmission line
JPS5660121A (en) Circuit switching system
JPS5795744A (en) Automatic line switching device for data communication device
JPS5720051A (en) Reception switching system of digital radio system
JPS5687961A (en) Multidrop transmitter
JPS57162531A (en) Electric communication system
JPS575474A (en) Signal switching device
JPS6486720A (en) Line switching control system
JPS5755634A (en) Terminal station emergency interruption communicaton system of communication system
JPS5691595A (en) Composite bus system
JPS5755642A (en) Branch circuit communication system
JPS56152338A (en) Duplex line switching device
JPS5792946A (en) Transmission system
JPS5757074A (en) System for operation confirmation of audio response system
JPS57152757A (en) Circuit for transmitting forced earth to exchange
JPS5792951A (en) Signal transmission system
JPS56122253A (en) Signal transmission system
JPS56143739A (en) Data remote monitoring system
JPS6464424A (en) Optical repeater