| 摘要 |
The present invention provides a service node, which extends the services of a carrier's multimedia subsystem (MS), such as an IP multimedia subsyste m (IMS), to enterprise networks in an efficient and effective manner. As suc h, MS subscribers gain access to enterprise services in addition to the carr ier's services provided via the carrier's circuit switched subsystems (CS) a nd packet subsystems (PS). The service node acts as a liaison between enterp rise application servers and the MS, such that the enterprise application se rvers appear as MS application servers to the MS. The service node provides user identifier and protocol translation between enterprise and MS user iden tifiers and protocols, respectively. As such, enterprise application servers can access the MS as well as be accessed by the MS to support user mobility , with continuity of services, between the enterprise and carrier networks.< /SDOAB>
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