WO1997022208A3 - Providing access to services in a telecommunications system - Google Patents

Providing access to services in a telecommunications system Download PDF

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Publication number
WO1997022208A3
WO1997022208A3 PCT/GB1996/002961 GB9602961W WO9722208A3 WO 1997022208 A3 WO1997022208 A3 WO 1997022208A3 GB 9602961 W GB9602961 W GB 9602961W WO 9722208 A3 WO9722208 A3 WO 9722208A3
Authority
WO
WIPO (PCT)
Prior art keywords
computer system
reserve
main computer
services
telecommunications system
Prior art date
Application number
PCT/GB1996/002961
Other languages
French (fr)
Other versions
WO1997022208A2 (en
Inventor
Martyn Di Howard
Stephen Turrell
William Nokes
Original Assignee
Northern Telecom Ltd
Nichol John Heir Of Howard Mar
Stephen Turrell
William Nokes
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 GBGB9525214.4A external-priority patent/GB9525214D0/en
Application filed by Northern Telecom Ltd, Nichol John Heir Of Howard Mar, Stephen Turrell, William Nokes filed Critical Northern Telecom Ltd
Publication of WO1997022208A2 publication Critical patent/WO1997022208A2/en
Publication of WO1997022208A3 publication Critical patent/WO1997022208A3/en

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
    • G06F11/202—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 where processing functionality is redundant
    • G06F11/2038—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 where processing functionality is redundant with a single idle spare processing component
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/25—Routing or path finding in a switch fabric
    • H04L49/253—Routing or path finding in a switch fabric using establishment or release of connections between ports
    • H04L49/255—Control mechanisms for ATM switching fabrics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0062—Provisions for network management
    • 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
    • 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
    • G06F11/202—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 where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2033—Failover techniques switching over of hardware resources
    • 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
    • G06F11/2097—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 maintaining the standby controller/processing unit updated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13504—Indexing scheme relating to selecting arrangements in general and for multiplex systems client/server architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13521—Indexing scheme relating to selecting arrangements in general and for multiplex systems fault management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13526—Indexing scheme relating to selecting arrangements in general and for multiplex systems resource management

Abstract

A communications network, includes a plurality of switch elements, a controller for the switch elements, and a system manager. The controller comprises a main computer system and a reserve computer system, there being means for switching from the main computer system to the reserve computer system in the event of failure of the main computer system. The main computer system communicates state changes in the form of a message stream to the reserve computer system whereby to update the reserve system with the current network state. The main computer system also provides status information to the reserve computer system at regular intervals whereby to detect an in-service failure of the main computer system.
PCT/GB1996/002961 1995-12-09 1996-11-29 Providing access to services in a telecommunications system WO1997022208A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9525214.4A GB9525214D0 (en) 1995-12-09 1995-12-09 Providing access to services in a telecommunications system
GB9525214.4 1995-12-09
GB9600681A GB2308040A (en) 1995-12-09 1996-01-12 Telecommunications system
GB9600681.2 1996-01-12

Publications (2)

Publication Number Publication Date
WO1997022208A2 WO1997022208A2 (en) 1997-06-19
WO1997022208A3 true WO1997022208A3 (en) 1997-11-20

Family

ID=26308267

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/002961 WO1997022208A2 (en) 1995-12-09 1996-11-29 Providing access to services in a telecommunications system

Country Status (2)

Country Link
GB (1) GB2308040A (en)
WO (1) WO1997022208A2 (en)

Families Citing this family (18)

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Publication number Priority date Publication date Assignee Title
DE19728505A1 (en) * 1997-07-03 1999-01-07 Philips Patentverwaltung Communication system with special channel
US6064726A (en) * 1997-12-31 2000-05-16 Alcatel Usa Sourcing, L.P. Fully flexible routing system
US6381321B1 (en) 1998-05-04 2002-04-30 T-Netix, Inc. Telecommunication resource allocation system and method
GB2344018B (en) * 1998-11-18 2003-06-25 Mitel Corp Remote peripheral switch backup call service mechanism
US6567376B1 (en) 1999-02-25 2003-05-20 Telefonaktiebolaget Lm Ericsson (Publ) Using system frame number to implement timers in telecommunications system having redundancy
US6470462B1 (en) 1999-02-25 2002-10-22 Telefonaktiebolaget Lm Ericsson (Publ) Simultaneous resynchronization by command for state machines in redundant systems
DE10011268B4 (en) * 2000-03-08 2011-05-19 Tenovis Gmbh & Co. Kg switch
DE10011267A1 (en) * 2000-03-08 2001-09-13 Tenovis Gmbh & Co Kg Communication module for bus operation as well as a system with several communication modules
US7899167B1 (en) 2003-08-15 2011-03-01 Securus Technologies, Inc. Centralized call processing
US8000269B1 (en) 2001-07-13 2011-08-16 Securus Technologies, Inc. Call processing with voice over internet protocol transmission
EP1335615B1 (en) * 2002-02-12 2006-11-08 Alcatel A method of determining an active or a passive role assignment to a control means of a network element
US9020114B2 (en) 2002-04-29 2015-04-28 Securus Technologies, Inc. Systems and methods for detecting a call anomaly using biometric identification
US7916845B2 (en) 2006-04-13 2011-03-29 Securus Technologies, Inc. Unauthorized call activity detection and prevention systems and methods for a Voice over Internet Protocol environment
US7860222B1 (en) 2003-11-24 2010-12-28 Securus Technologies, Inc. Systems and methods for acquiring, accessing, and analyzing investigative information
US9026468B2 (en) 2002-04-29 2015-05-05 Securus Technologies, Inc. System and method for proactively establishing a third-party payment account for services rendered to a resident of a controlled-environment facility
US7529357B1 (en) 2003-08-15 2009-05-05 Evercom Systems, Inc. Inmate management and call processing systems and methods
US10796392B1 (en) 2007-05-22 2020-10-06 Securus Technologies, Llc Systems and methods for facilitating booking, bonding and release
US9135097B2 (en) 2012-03-27 2015-09-15 Oracle International Corporation Node death detection by querying

Citations (9)

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EP0230029A2 (en) * 1985-12-27 1987-07-29 AT&T Corp. Method and apparatus for fault recovery in a distributed processing system
EP0362105A2 (en) * 1988-09-29 1990-04-04 International Business Machines Corporation Method for processing program threads of a distributed application program by a host computer and an intelligent work station in an SNA LU 6.2 network environment
EP0381655A2 (en) * 1989-01-31 1990-08-08 International Business Machines Corporation Method for synchronizing the dispatching of tasks among multitasking operating systems
US4959768A (en) * 1989-01-23 1990-09-25 Honeywell Inc. Apparatus for tracking predetermined data for updating a secondary data base
EP0441087A1 (en) * 1990-02-08 1991-08-14 International Business Machines Corporation Checkpointing mechanism for fault-tolerant systems
US5084816A (en) * 1987-11-25 1992-01-28 Bell Communications Research, Inc. Real time fault tolerant transaction processing system
WO1992005487A1 (en) * 1990-09-24 1992-04-02 Novell, Inc. Fault tolerant computer system
US5249290A (en) * 1991-02-22 1993-09-28 At&T Bell Laboratories Method of and apparatus for operating a client/server computer network
EP0649092A1 (en) * 1993-10-15 1995-04-19 Tandem Computers Incorporated Method and apparatus for fault tolerant connection of a computing system to local area networks

Patent Citations (9)

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Publication number Priority date Publication date Assignee Title
EP0230029A2 (en) * 1985-12-27 1987-07-29 AT&T Corp. Method and apparatus for fault recovery in a distributed processing system
US5084816A (en) * 1987-11-25 1992-01-28 Bell Communications Research, Inc. Real time fault tolerant transaction processing system
EP0362105A2 (en) * 1988-09-29 1990-04-04 International Business Machines Corporation Method for processing program threads of a distributed application program by a host computer and an intelligent work station in an SNA LU 6.2 network environment
US4959768A (en) * 1989-01-23 1990-09-25 Honeywell Inc. Apparatus for tracking predetermined data for updating a secondary data base
EP0381655A2 (en) * 1989-01-31 1990-08-08 International Business Machines Corporation Method for synchronizing the dispatching of tasks among multitasking operating systems
EP0441087A1 (en) * 1990-02-08 1991-08-14 International Business Machines Corporation Checkpointing mechanism for fault-tolerant systems
WO1992005487A1 (en) * 1990-09-24 1992-04-02 Novell, Inc. Fault tolerant computer system
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Also Published As

Publication number Publication date
GB2308040A (en) 1997-06-11
GB9600681D0 (en) 1996-03-13
WO1997022208A2 (en) 1997-06-19

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