Abstract: The invention relates to a method of monitoring multimedia stream exchange session initialization messages transmitted in packet mode via a monitoring server over a network between a sender terminal and one or more receiver terminals. Said method comprises a step (50) of estimating a bit rate value for at least one initialization packet received by the monitoring server, a step (52) of comparing said value to a maximum authorized bit rate value, and a step (40) of authorizing transmission of the initialization packet only if the bit rate value for said packet does not exceed the maximum authorized bit rate value. The estimated bit rate value is optionally an average value that is measured over a sliding time window. The invention also relates to a server and an installation for carrying out the method of the invention.

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