SUBSCRIBER FALLBACK/MIGRATION MECHANISMS IN IMS GEOGRAPHIC REDUNDANT NETWORKS
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United States of America Patent
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N/A
Issued Date -
Jun 23, 2011
app pub date -
Dec 18, 2009
filing date -
Dec 18, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and method for maintaining service availability for an Internet Protocol Multimedia Subsystem (IMS) network is provided. A primary network receives a request from one or more subscribers of the primary network to place a call. The primary network registers the one or more subscribers. The primary network assigns an identifier to data of the one or more registered subscribers for the registration. The identifier associates the one or more subscribers with the primary network upon migration of the one or more subscribers from the primary network to the secondary network. The secondary network monitors the primary network to detect an event on the primary network. The secondary network migrates the one or more subscribers from the secondary network to the primary network based on the identifier and after initiation of the migration in response to the occurrence of the event on the primary network.
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