JPS5698054A - Backup system - Google Patents

Backup system

Info

Publication number
JPS5698054A
JPS5698054A JP14580A JP14580A JPS5698054A JP S5698054 A JPS5698054 A JP S5698054A JP 14580 A JP14580 A JP 14580A JP 14580 A JP14580 A JP 14580A JP S5698054 A JPS5698054 A JP S5698054A
Authority
JP
Japan
Prior art keywords
circuit
trunk circuit
trunk
control parameter
collecting
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
JP14580A
Other languages
Japanese (ja)
Inventor
Fumio Akiyama
Tomoo Motohashi
Fusayoshi Aso
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14580A priority Critical patent/JPS5698054A/en
Publication of JPS5698054A publication Critical patent/JPS5698054A/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 realize a backup by switching an optional using trunk circuit having a breakdown to the standby trunk circuit by exchanging the circuit control information of the trunk circuit control part within a multiplex collecting/distributing device. CONSTITUTION:The multiplex collecting/distributing device 12, when detecting the breakdown of the using trunk circuit 9, sets the control parameter of the standby trunk circuit 11 to the using trunk circuit control part 20 to which the control parameter of the circuit 9 is set. At the same time, an indication of exchange is given for the control parameter to the collecting/distributing device 8 of the terminal side from the device 12 through the normal using trunk circuit 10. Thus the device 8 performs an exchange of control parameter within the using trunk circuit control parts 17 and 19. As a result, the circuit 1 is used presently with the circuit 9 set for the standby purpose, and the input circuits 6 and 6' transmits the data via the circuit 11.
JP14580A 1980-01-07 1980-01-07 Backup system Pending JPS5698054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14580A JPS5698054A (en) 1980-01-07 1980-01-07 Backup system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14580A JPS5698054A (en) 1980-01-07 1980-01-07 Backup system

Publications (1)

Publication Number Publication Date
JPS5698054A true JPS5698054A (en) 1981-08-07

Family

ID=11465852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14580A Pending JPS5698054A (en) 1980-01-07 1980-01-07 Backup system

Country Status (1)

Country Link
JP (1) JPS5698054A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0292038A (en) * 1988-09-28 1990-03-30 Nec Corp Digital multiplex communication system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55102457A (en) * 1979-02-01 1980-08-05 Ookon:Kk Grease coating device for wire rope

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55102457A (en) * 1979-02-01 1980-08-05 Ookon:Kk Grease coating device for wire rope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0292038A (en) * 1988-09-28 1990-03-30 Nec Corp Digital multiplex communication system
JPH0691515B2 (en) * 1988-09-28 1994-11-14 日本電気株式会社 Digital multiplex communication system

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