| 摘要 |
The invention relates to a method for updating a table of correspondence between a logical address (AD), which is associated with a user unit in a communications network, and a unique identification number (UA), which is associated with a user unit of a group of user units managed by a management center (CG), during which messages are exchanged between this management center and at least one specific user unit (STB*) of said group via the communications network, these messages being routed to specific user unit (STB*) while using the logical address (AD*) of said user unit in this network. The invention is characterized by comprising the following steps: searching within the table of correspondence (TC) for the logical address (AD*) of the user unit in this communications network that corresponds to the unique identification number (UA*) of the specific user unit (STB*); sending messages to the user unit (STB*) having the relevant unique identification number (UA*), to the logical address (AD*) corresponding to this communications network; in the event of bad reception of messages, sending a request containing an identifier of said specific user unit (STB*), this request being sent to all or a portion of the user units (STB) belonging to said group; detecting a return message of a user unit (STB*) whose unique identification number (UA*) corresponds to the identifier contained in the request; determining the logical address (AD*) in the network used by the user unit (STB*) having transmitted the return message; verifying the logical address (AD) by establishing a communication between the management center and the user unit (STB*), and authenticating the specific user unit by management center; storing, in the table of correspondence (TC) of the management center, said logical address (AD*) of the user unit in the network associated with the unique identification number (UA*) of the user unit (STB*) having transmitted the return message. |
