Multiplex communications – Fault recovery – Bypass an inoperative channel
Patent
1995-05-04
1997-07-22
Chin, Wellington
Multiplex communications
Fault recovery
Bypass an inoperative channel
370216, 370410, 370522, H04J 312
Patent
active
056509987
ABSTRACT:
A method for balancing traffic among parallel links connecting two signalling points of a Common Channel Signalling System (SS7) when one or more of the links becomes unavailable. A change-over process causes SLS (Signalling Link Selection) field values originally associated with the unavailable link to be reassigned to remaining available links on a distributed basis. A change-back process, used where a previously unavailable link is restored to service, causes SLS field values to be reassigned from the other available links to the restored link.
REFERENCES:
patent: 5084816 (1992-01-01), Boese et al.
CCITT Specifications of Signalling System No. 7, 1989, pp. 124-156, Sections 5 & 6.
Jonathan L. Wang, "Traffic Routing and Performance Analysis of the Common Channel Signaling System 7 Network", 1991, pp. 301-305.
Proceedings of the CCITT Plenary Assembly (Blue Book); Specifications of Signalling System No. 7, vol. 6, No. 7, 1989 Geneva CH pp. 127-131 `Recommendation Q. 704: Signalling network functions and messages; sections 2.2 to 2.4`.
Proceedings of the IEEE, vol. 80, No. 4, Apr. 1992, New York US pp. 607-617, XP304351 Jabbari `Routing and congestion control in Common Channel Signalling System No. 7` pp. 610, 612, 614.
Proceedings of the National Communications Forum, vol. 43, No. 2, 2 Oct. 1989, Chicago US pp. 930-936, XP225004 El-Toumi et al. `Interconnecting SS/ signaling networks` p. 932.
IEEE Global Telecommunications Conference & Exhibition, Session 47, Paper 5, vol. 3, 28 Nov. 1988, Hollywood, FA US pp. 1560-1563, XP12094 Amirazizi `Controlling synchronous networks with digital cross-connect system`.
Angenot Eric
Baudrion Muriel
Caillaud Dominique
Gastaud Valerie
Martin Pierre-Olivier
Chin Wellington
International Business Machines - Corporation
Vu Huy D.
Woods Gerald R.
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