Abstract: The invention relates to a system for controlling access to a service offered by a communications network. According to the invention, such a service is accessible via a plurality of private access stations to the communications network, such as home gateways (HG1, HG2, HG3), which are into an access network dedicated to the service. A separate location area (LA1, LA2, LA3) is assigned to each of the home gateways (HG1, HG2, HG3).

Abstract: The invention relates to a system for controlling access to a service offered by a communications network. According to the invention, such a service is accessible via a plurality of private access stations to the communications network, such as home gateways (HG1, HG2, HG3), which are into an access network dedicated to the service. A separate location area (LA1, LA2, LA3) is assigned to each of the home gateways (HG1, HG2, HG3).

Abstract: When two terminals (T1, T2) communicate with each other via a first service via a network, switching from the first telephone service to a second telephone service enables the two terminals (T1, T2) to continue to communicate with each other via the second telephone service. In order to carry out said switching, a telephone service transformer (6) interrupts the communication between the two terminals (T1, T2) using the first telephone service; calls the two terminals (T1, T2) in parallel via the second telephone service; and then interconnects the two terminals (T1, T2) by joining the respective communications established between the transformer (6) and the two terminals (T1, T2) in order to establish a communication between the two terminals (T1, T2) via the second telephone service.

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.