JPS6473934A - Digital subscriber line changeover device - Google Patents

Digital subscriber line changeover device

Info

Publication number
JPS6473934A
JPS6473934A JP22962287A JP22962287A JPS6473934A JP S6473934 A JPS6473934 A JP S6473934A JP 22962287 A JP22962287 A JP 22962287A JP 22962287 A JP22962287 A JP 22962287A JP S6473934 A JPS6473934 A JP S6473934A
Authority
JP
Japan
Prior art keywords
line
station
active
standby
fault
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
JP22962287A
Other languages
Japanese (ja)
Other versions
JP2569596B2 (en
Inventor
Tatsuyoshi Hamada
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
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 filed Critical NEC Corp
Priority to JP62229622A priority Critical patent/JP2569596B2/en
Publication of JPS6473934A publication Critical patent/JPS6473934A/en
Application granted granted Critical
Publication of JP2569596B2 publication Critical patent/JP2569596B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Exchanges (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To realize the changeover between an active line and a standby line with simple device constitution by receiving fault information and switching information of a standby line of an opposite station through the use of the active line so as to switch the active line and the standby line thereby attaining duplicated line configuration. CONSTITUTION:The fault information of a station and a subscriber station is inserted in a predetermined time slot of a transmission frame in crossing as that of the standby line in case of a fault of the active station and that of the active line in case of a fault of the standby line by using the active and standby lines 103, 102. Means 4, 8 inserting the switching information of its own station to a time slot predetermined in the active and standby lines sending the result to an opposite station simultaneously, a means 26 extracting the fault information and opposite switching information by its reception section and discriminating singly the switching control in its own station depending on the fault state and switching information of its own station, and a switching means 27 applying connection changeover of the active and standby lines based on the result of discrimination are provided. Thus, the digital subscriber transmission line is duplicated simply.
JP62229622A 1987-09-16 1987-09-16 Digital subscriber line switching equipment Expired - Lifetime JP2569596B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62229622A JP2569596B2 (en) 1987-09-16 1987-09-16 Digital subscriber line switching equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62229622A JP2569596B2 (en) 1987-09-16 1987-09-16 Digital subscriber line switching equipment

Publications (2)

Publication Number Publication Date
JPS6473934A true JPS6473934A (en) 1989-03-20
JP2569596B2 JP2569596B2 (en) 1997-01-08

Family

ID=16895076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62229622A Expired - Lifetime JP2569596B2 (en) 1987-09-16 1987-09-16 Digital subscriber line switching equipment

Country Status (1)

Country Link
JP (1) JP2569596B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0398320A (en) * 1989-09-11 1991-04-23 Fujitsu Ltd Switching control system for active/standby package constituting redundant system
JPH05227135A (en) * 1992-02-17 1993-09-03 Nec Corp Transmission line switching device
JPH05284116A (en) * 1992-04-01 1993-10-29 Mitsubishi Electric Corp Data communication system and optical repeater device for the system
JP2009508373A (en) * 2005-09-12 2009-02-26 中国移▲動▼通信集▲団▼公司 Optical fiber access network and communication protection method thereof
JP2014225802A (en) * 2013-05-16 2014-12-04 Kddi株式会社 Optical transmission system
JP2015115751A (en) * 2013-12-11 2015-06-22 Kddi株式会社 Optical line failure detection device, optical/radio line switching system, and optical transmission system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0398320A (en) * 1989-09-11 1991-04-23 Fujitsu Ltd Switching control system for active/standby package constituting redundant system
JPH05227135A (en) * 1992-02-17 1993-09-03 Nec Corp Transmission line switching device
JPH05284116A (en) * 1992-04-01 1993-10-29 Mitsubishi Electric Corp Data communication system and optical repeater device for the system
JP2009508373A (en) * 2005-09-12 2009-02-26 中国移▲動▼通信集▲団▼公司 Optical fiber access network and communication protection method thereof
JP2014225802A (en) * 2013-05-16 2014-12-04 Kddi株式会社 Optical transmission system
JP2015115751A (en) * 2013-12-11 2015-06-22 Kddi株式会社 Optical line failure detection device, optical/radio line switching system, and optical transmission system

Also Published As

Publication number Publication date
JP2569596B2 (en) 1997-01-08

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