Abstract: Telecommunications system including a network selection manager and a mobile node. The network selection manager is operable to determine a list of preferred mobile access networks to which the mobile node may be attached during an inactive state and to communicate the list of preferred mobile access networks to the mobile node. The list of preferred mobile access networks for selection is determined in accordance with operator determined conditions (e.g. load, congestion in the access networks, subscription info, location of the mobile, changes in the list since last communication to the Mobile Station, etc.). The mobile node is operable in the inactive state to select one of the plurality of mobile access networks which is available for attachment in dependence on the list of preferred mobile access networks communicated to the mobile node from the network selection manager.

Abstract: Telecommunications system including a network selection manager and a mobile node. The network selection manager is operable to determine a list of preferred mobile access networks to which the mobile node may be attached during an inactive state and to communicate the list of preferred mobile access networks to the mobile node. The list of preferred mobile access networks for selection is determined in accordance with operator determined conditions (e.g. load, congestion in the access networks, subscription info, location of the mobile, changes in the list since last communication to the Mobile Station, etc.). The mobile node is operable in the inactive state to select one of the plurality of mobile access networks which is available for attachment in dependence on the list of preferred mobile access networks communicated to the mobile node from the network selection manager.

Abstract: 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 (UE1) 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 (UE1) to a first proxy server (P-CSCF1), then, from this first proxy server, to a first session control server (S-CSCF1) of the network in which the first equipment (UE1) is registered, and from this first session server (S-CSCF1) to a point of entry server (I-CSCF2) of the network corresponding to the destination address of the second equipment (UE2); this point of entry server (I-CSCF2) interrogates a database (HSS2) of the network of the second equipment (UE2) in order to obtain the address of a session control server (S-CSF2) responsible for said second equipme