JPS57127395A - Channel memory switching system - Google Patents
Channel memory switching systemInfo
- Publication number
- JPS57127395A JPS57127395A JP1226881A JP1226881A JPS57127395A JP S57127395 A JPS57127395 A JP S57127395A JP 1226881 A JP1226881 A JP 1226881A JP 1226881 A JP1226881 A JP 1226881A JP S57127395 A JPS57127395 A JP S57127395A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- memory
- block
- fault
- channel memory
- 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
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
PURPOSE:To ensure the switching to a spare channel memory in case a using channel system has a fault, by providing a using channel memory block having the prescribed capacity for connection of the channel plus a spare channel memory block having an interger-fold capacity as much as the using memory block. CONSTITUTION:An address corresponding to each channel of a channel memory 1 is cyclically designed by a channel memory control circuit 4. The voice data given from an incoming highway 2 is stored in a memory 1, and the voice data of the address of the remote calling side designated to the circuit 4 is transmitted to an outgoing highway 3 from a central controller 5. For the memory 1, the channel memory blocks corresponding to the number of channels of the highways 2 and 3 is defined as a block and plural units of such block are provided to ensure a redundant constitution of both the using and spare blocks. In case a call has some fault due to a fault of the channel system, a memory block switch ing circuit 6 switches the using block of the memory 1 to the spare channel memory block by an indication given from the controller 5. After this the change of the calling state is monitored to facilitate an easy decision of the fault.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1226881A JPS57127395A (en) | 1981-01-29 | 1981-01-29 | Channel memory switching system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1226881A JPS57127395A (en) | 1981-01-29 | 1981-01-29 | Channel memory switching system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57127395A true JPS57127395A (en) | 1982-08-07 |
Family
ID=11800614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1226881A Pending JPS57127395A (en) | 1981-01-29 | 1981-01-29 | Channel memory switching system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57127395A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5944192A (en) * | 1982-09-06 | 1984-03-12 | Fujitsu Ltd | Address converting system of channel memory |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53132204A (en) * | 1977-04-23 | 1978-11-17 | Nec Corp | Time sharing multiplex control system |
-
1981
- 1981-01-29 JP JP1226881A patent/JPS57127395A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53132204A (en) * | 1977-04-23 | 1978-11-17 | Nec Corp | Time sharing multiplex control system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5944192A (en) * | 1982-09-06 | 1984-03-12 | Fujitsu Ltd | Address converting system of channel memory |
JPH0129353B2 (en) * | 1982-09-06 | 1989-06-09 | Fujitsu Ltd |
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