JPS5628532A - Transmission unit - Google Patents

Transmission unit

Info

Publication number
JPS5628532A
JPS5628532A JP10517879A JP10517879A JPS5628532A JP S5628532 A JPS5628532 A JP S5628532A JP 10517879 A JP10517879 A JP 10517879A JP 10517879 A JP10517879 A JP 10517879A JP S5628532 A JPS5628532 A JP S5628532A
Authority
JP
Japan
Prior art keywords
line
terminal
route
switch
transmission
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
JP10517879A
Other languages
Japanese (ja)
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 JP10517879A priority Critical patent/JPS5628532A/en
Publication of JPS5628532A publication Critical patent/JPS5628532A/en
Pending 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 reduce probability of simultaneous fault occurrence on current and auxiliary lines to enhance reliability, by selecting and connecting the auxiliary line from the route different from the route of the current line. CONSTITUTION:Normally, terminal 1 is connected to line 3 through switch 2, and terminal 5 is connected to line 7 through switch 6, and they transmit and receive signals respectively. When a fault occurs on line 3, which 2 operates to connect terminal 1 to line 9, and transmission and receiving are performed through line 8 which is provided in the route other than that of line 3, so that terminal 1, at least, can hold transmission and receiving functions even for simultaneous fault occurrence on lines 3 and 4. The operation of terminal 5 is similar to that of terminal 1; and when a fault occurs on line 7, switch 6 operates to connect terminal 5 to line 10, and transmission and receiving are performed through line 4 which is provided in the route other than that of line 7.
JP10517879A 1979-08-17 1979-08-17 Transmission unit Pending JPS5628532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10517879A JPS5628532A (en) 1979-08-17 1979-08-17 Transmission unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10517879A JPS5628532A (en) 1979-08-17 1979-08-17 Transmission unit

Publications (1)

Publication Number Publication Date
JPS5628532A true JPS5628532A (en) 1981-03-20

Family

ID=14400416

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10517879A Pending JPS5628532A (en) 1979-08-17 1979-08-17 Transmission unit

Country Status (1)

Country Link
JP (1) JPS5628532A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5087911A (en) * 1987-06-19 1992-02-11 Gec Plessey Telecommunications Limited Data communication network

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5087911A (en) * 1987-06-19 1992-02-11 Gec Plessey Telecommunications Limited Data communication network

Similar Documents

Publication Publication Date Title
JPS645138A (en) Ring constitution system for line concentrator
JPS5628532A (en) Transmission unit
JPS55161449A (en) Fault monitor system
JPS5432939A (en) Line unit
JPS5690655A (en) Wire transmission system
JPS5619254A (en) Remote control system
JPS56149851A (en) Looplike data transmission equipment
JPS56152338A (en) Duplex line switching device
JPS5665225A (en) Bus control device
JPS5725743A (en) Maintenance system of radio telephone system
JPS5733851A (en) Switching system of station
JPS52123118A (en) Digital communication unit completed into duplicated reducdant circuit
JPS5538758A (en) Using/spare circuit switching system for signal transmission
JPS577655A (en) General multiple address transmission system
JPS56124903A (en) Mobile monitoring equipment
JPS5496313A (en) Signal switching system
JPS6460123A (en) Order wire line system for loop-shaped transmitting path
JPS5758419A (en) Uninterruptible transmission line switching system
JPS5619256A (en) Centralized monitor control system
JPS5513570A (en) Automatic raising system of double central control units at trouble time
JPS5236950A (en) Information transmission system
JPS56149831A (en) Duplex line switching unit
JPS55137793A (en) Remote control unit
JPS5741056A (en) Fault time bypass system of loop transmission line
JPS5578653A (en) Data transmission system