JPS6436229A - Hitless switching control system - Google Patents

Hitless switching control system

Info

Publication number
JPS6436229A
JPS6436229A JP19170887A JP19170887A JPS6436229A JP S6436229 A JPS6436229 A JP S6436229A JP 19170887 A JP19170887 A JP 19170887A JP 19170887 A JP19170887 A JP 19170887A JP S6436229 A JPS6436229 A JP S6436229A
Authority
JP
Japan
Prior art keywords
information
state
signal
switching control
data
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
JP19170887A
Other languages
Japanese (ja)
Other versions
JP2560737B2 (en
Inventor
Hideaki Funae
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 JP62191708A priority Critical patent/JP2560737B2/en
Publication of JPS6436229A publication Critical patent/JPS6436229A/en
Application granted granted Critical
Publication of JP2560737B2 publication Critical patent/JP2560737B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Detection And Prevention Of Errors In Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To prevent a hit of data by providing a system switching control section applying switching control to two systems of control memories, buffers in a proper timing to a time division multiplexer in a digital transmission system. CONSTITUTION:The moment a trigger signal revising a multiplexed position is applied, that is, in the transition of state A to B, a selection control signal 13 applies system switching from information 16 into information 17 and it is being written in a sequential address of a data memory 12 in the multiplex location after the revision. In the transfer of state B into C, the selection control signals 14, 15 in the state B apply system switching from information 18 into information 19 by the signal 14 and from information 16 into information 17 by the signal 15. Then the readout and separation are applied at the address after revision and the state is kept afterward. Thus, a hitless data is caused in revising the multiplex location of the terminal equipment and the transmission line interface.
JP62191708A 1987-07-31 1987-07-31 Instantaneous interruption switching control method Expired - Lifetime JP2560737B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62191708A JP2560737B2 (en) 1987-07-31 1987-07-31 Instantaneous interruption switching control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62191708A JP2560737B2 (en) 1987-07-31 1987-07-31 Instantaneous interruption switching control method

Publications (2)

Publication Number Publication Date
JPS6436229A true JPS6436229A (en) 1989-02-07
JP2560737B2 JP2560737B2 (en) 1996-12-04

Family

ID=16279157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62191708A Expired - Lifetime JP2560737B2 (en) 1987-07-31 1987-07-31 Instantaneous interruption switching control method

Country Status (1)

Country Link
JP (1) JP2560737B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009022033A (en) * 2008-09-08 2009-01-29 Fujitsu Ltd Method and apparatus for changing line connection

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6257399A (en) * 1985-09-05 1987-03-13 Oki Electric Ind Co Ltd Line setting system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6257399A (en) * 1985-09-05 1987-03-13 Oki Electric Ind Co Ltd Line setting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009022033A (en) * 2008-09-08 2009-01-29 Fujitsu Ltd Method and apparatus for changing line connection

Also Published As

Publication number Publication date
JP2560737B2 (en) 1996-12-04

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