JPS57157698A - System switching control method for electronic switching system - Google Patents
System switching control method for electronic switching systemInfo
- Publication number
- JPS57157698A JPS57157698A JP56043417A JP4341781A JPS57157698A JP S57157698 A JPS57157698 A JP S57157698A JP 56043417 A JP56043417 A JP 56043417A JP 4341781 A JP4341781 A JP 4341781A JP S57157698 A JPS57157698 A JP S57157698A
- Authority
- JP
- Japan
- Prior art keywords
- switching
- preliminary
- current
- status
- channel device
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
- H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multi Processors (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Exchange Systems With Centralized Control (AREA)
- Hardware Redundancy (AREA)
Abstract
PURPOSE:To perform exchange processing successively preceding to switching by setting a status relating to each line connection on both current and preliminary channel devices in a current processor and making a preliminary procesor read the setting status from the preliminary channel device when a trouble occurs. CONSTITUTION:Normally, a current processr 11 sets up the status relating each line connection on both current and preliminarily channel devices 9, 10 and a switching device 8 selects the current channel device 9 to control each transmission line 6. At the time of trouble, the switching device 8 changes the connection to the line 6 and the preliminary channel device 10 and a preliminary processor 12 reads out the setting status from the preliminary channel device 10, performing exchange processing successively preceding to switching.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56043417A JPS57157698A (en) | 1981-03-25 | 1981-03-25 | System switching control method for electronic switching system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56043417A JPS57157698A (en) | 1981-03-25 | 1981-03-25 | System switching control method for electronic switching system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57157698A true JPS57157698A (en) | 1982-09-29 |
Family
ID=12663130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56043417A Pending JPS57157698A (en) | 1981-03-25 | 1981-03-25 | System switching control method for electronic switching system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57157698A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61236292A (en) * | 1985-04-12 | 1986-10-21 | Hitachi Ltd | Channel controller |
JPS61284193A (en) * | 1985-06-11 | 1986-12-15 | Iwatsu Electric Co Ltd | Duplexed switching controller |
JPS62256161A (en) * | 1986-04-30 | 1987-11-07 | Fujitsu Ltd | Change over control system for spare device |
JP2007223467A (en) * | 2006-02-23 | 2007-09-06 | Nishikawa Rubber Co Ltd | Back door seal structure |
-
1981
- 1981-03-25 JP JP56043417A patent/JPS57157698A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61236292A (en) * | 1985-04-12 | 1986-10-21 | Hitachi Ltd | Channel controller |
JPS61284193A (en) * | 1985-06-11 | 1986-12-15 | Iwatsu Electric Co Ltd | Duplexed switching controller |
JPS62256161A (en) * | 1986-04-30 | 1987-11-07 | Fujitsu Ltd | Change over control system for spare device |
JP2007223467A (en) * | 2006-02-23 | 2007-09-06 | Nishikawa Rubber Co Ltd | Back door seal structure |
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