METHOD AND SYSTEM FOR SAVING AND RETRIEVING CLIENT-SPECIFIC INFORMATION IN AN INTERNET PROTOCOL MULTIMEDIA SUBSYSTEM

摘要

A method of saving and retrieving client-specific information in an Internet Protocol (IP) Multimedia Subsystem (IMS). A Serving Call Session Control Server (S-CSCF) receives information from a first client initiating a call to a second client. The information includes identification information corresponding to the first client and a Session Initiation Protocol (SIP) invite to the second client. If a profile of the first client in a Home Subscriber Server (HSS) includes a trigger value, the S-CSCF forwards the SIP invite to an Application Server (AS). If a local AS archive does not include valid profile information corresponding to the first client, the AS fetches valid profile information from the HSS, and the AS stores the profile information in the local archive. The AS sends the profile information corresponding to the first client from the local archive to the second client by embedding the profile information within the SIP invite.