| 摘要 |
A method for establishing a multimedia session between a calling telecommunications equipment and a called equipment that is a mobile equipment of a network of the multimedia sub-domain type, wherein: an invitation (Invite) is sent from the first user equipment (UE 1 ) to establish a multimedia session, which comprises as he destination address a public identity of the second equipment, said invitation being transmitted: by the first equipment (UE 1 ) to a first proxy server (P-CSCF 1 ), then, from this first proxy server, to a first session control server (S-CSCF 1 ) of the network in which the first equipment (UE 1 ) is registered, and from this first session server (S-CSCF 1 ) to a point of entry server (I-CSCF 2 ) of the network corresponding to the destination address of the second equipment (UE 2 ); this point of entry server (I-CSCF 2 ) interrogates a database (HSS 2 ) of the network of the second equipment (UE 2 ) in order to obtain the address of a session control server (S-CSF 2 ) responsible for said second equipment (UE 2 ); when said second equipment (UE 2 ) is registered in said database: said point of entry server (I-CSCF 2 ) transmits the invitation message to the selected session server (S-CSCF 2 ), and said session server (S-CSCF 2 ) transmits the invitation message to a proxy server (P-CSCF 2 ) corresponding to the second equipment, wherein the proxy server (P-CSCF 2 ) transmits this invitation message by encapsulating it in an IP packet to the second equipment via an appropriate transit node (GGSN).
|
