GB1338943A - Telecommunications exchanges - Google Patents

Telecommunications exchanges

Info

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
Application number
GB5235171A
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE19702056535 external-priority patent/DE2056535C/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1338943A publication Critical patent/GB1338943A/en
Expired legal-status Critical Current

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.
GB5235171A 1970-11-17 1971-11-11 Telecommunications exchanges Expired GB1338943A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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