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专利名称：IP MULTIMEDIA SUBSYSTEM REGISTRATION发明人：LINDHOLM, FREDRIK,KELLER, RALF申请号：EP2009050157申请日：20090108
公开号：WO2009087186A8公开日：20100715
摘要：A method of ensuring that a currently reachable contact address is registeredfor a user terminal within an IP Multimedia Subsystem, the method comprisingregistering a first contact address for said terminal with the IP Multimedia Subsystem,subsequently determining on a network side that said terminal is no longer reachable viasaid first contact address, and as a consequence of such a determination, registering onthe network side a second reachable contact address on behalf of the user terminal, withthe IP Multimedia Subsystem.
申请人：TELEFONAKTIEBOLAGET LM ERICSSON (PUBL),LINDHOLM, FREDRIK,KELLER,RALF
代理人：ROBINSON, JOHN
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