| 摘要 |
A method of limiting the media description negotiation in Mobile IP networks, comprising the steps of: filtering, by a proxy call state control means (P-CSCF), a media description list of a user equipment (UE; UE-O, UE-T) based on policy constraints of networks which are involved in a communication connection of said user equipment (UE; UE-O, UE-T); and establishing a communication connection of said user equipment (UE; UE-O, UE-T), wherein a media description list for said communication connection is negotiated by said proxy call state control means (P-CSCF).
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