GB1338943A - Telecommunications exchanges - Google Patents
Telecommunications exchangesInfo
- Publication number
- GB1338943A GB1338943A GB5235171A GB5235171A GB1338943A GB 1338943 A GB1338943 A GB 1338943A GB 5235171 A GB5235171 A GB 5235171A GB 5235171 A GB5235171 A GB 5235171A GB 1338943 A GB1338943 A GB 1338943A
- Authority
- GB
- United Kingdom
- Prior art keywords
- processor
- input
- data
- active
- input station
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
-
- 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
- H04Q3/54541—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 using multi-processor systems
- H04Q3/54558—Redundancy, stand-by
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Hardware Redundancy (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
1338943 Automatic exchange systems SIEMENS AG 11 Nov 1971 [17 Nov 1970] 52351/71 Heading H4K In a centrally controlled telecommunication exchange controlled by duplicate processors only one of which is actively involved at a time in switching processes, a scanner/distributer (as described the line scanner) is arranged to scan an input station for changes of semipermanent data such as directory to equipment translations and in the event of the input station being active the active processor receives the input data, updates its own store and arranges for the input data to be continuously or intermittantly available for a sufficient period for the duplicate processor to also receive the input data as soon as it completes any checking &c. fuction it may be involved in. Three alternative arrangements are outlined. In one the active processes causes both processors to be connected via the scanner/distributer to the input station and repeatably requests the input information over a period sufficient to ensure that the duplicate processor has also responded thereto. In other arrangements only the active processor is initially connected to the input station, the active processor repeats the data to the input station and after checking the duplicate processor is connected to the input station or to the active processor, the latter in either case repeating the data a sufficient number of times to ensure its reception.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702056535 DE2056535C (en) | 1970-11-17 | Circuit arrangement for telecommunications, in particular telephone switching systems, which are centrally controlled by at least two computers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1338943A true GB1338943A (en) | 1973-11-28 |
Family
ID=5788371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5235171A Expired GB1338943A (en) | 1970-11-17 | 1971-11-11 | Telecommunications exchanges |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT316662B (en) |
BE (1) | BE775460A (en) |
CH (1) | CH535522A (en) |
FR (1) | FR2114590A5 (en) |
GB (1) | GB1338943A (en) |
IT (1) | IT941161B (en) |
LU (1) | LU64263A1 (en) |
NL (1) | NL158351B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4805106A (en) * | 1984-10-17 | 1989-02-14 | American Telephone And Telegraph Company, At&T Bell Laboratories | Method of and arrangement for ordering of multiprocessor operations in a multiprocessor system with redundant resources |
-
1971
- 1971-10-22 AT AT918471A patent/AT316662B/en not_active IP Right Cessation
- 1971-10-26 CH CH1552871A patent/CH535522A/en not_active IP Right Cessation
- 1971-11-11 GB GB5235171A patent/GB1338943A/en not_active Expired
- 1971-11-12 FR FR7140497A patent/FR2114590A5/fr not_active Expired
- 1971-11-15 LU LU64263D patent/LU64263A1/xx unknown
- 1971-11-16 IT IT3113771A patent/IT941161B/en active
- 1971-11-17 BE BE775460A patent/BE775460A/en unknown
- 1971-11-17 NL NL7115845A patent/NL158351B/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4805106A (en) * | 1984-10-17 | 1989-02-14 | American Telephone And Telegraph Company, At&T Bell Laboratories | Method of and arrangement for ordering of multiprocessor operations in a multiprocessor system with redundant resources |
Also Published As
Publication number | Publication date |
---|---|
AT316662B (en) | 1974-07-25 |
BE775460A (en) | 1972-05-17 |
NL7115845A (en) | 1972-05-19 |
LU64263A1 (en) | 1972-06-02 |
IT941161B (en) | 1973-03-01 |
DE2056535A1 (en) | 1972-05-04 |
NL158351B (en) | 1978-10-16 |
FR2114590A5 (en) | 1972-06-30 |
DE2056535B2 (en) | 1972-05-04 |
CH535522A (en) | 1973-03-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |