| 摘要 |
A system of Session Initiation Protocol (SIP) terminals capable of processing SIP messages and SIP servers that perform selected functions at the request of the SIP terminals, includes a SIP server (12) for pre-registering capabilities and user preferences of a registering terminal (15) after resolution by a Capability Negotiation Manager (16), and for subsequently receiving an incoming SIP message from a sending terminal (19) indicating a message intended for the pre-registered terminal, and adaptation means (20) for adapting the incoming message to meet the capabilities and user preferences of the pre-registered terminal for transmission by the SIP server to the pre-registered terminal.
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