Abstract: The invention relates to a method for the automatic configuration of an IP telephony device and/or data from a data transmission network with packet switching, which enables the device to obtain a lease on a virtual sub-network while it is physically connected to another virtual sub-network. In this way, for example, another device can share the same physical access port to the networks via a switch, without the two devices necessarily receiving a lease on the same sub-network.

Abstract: In a packet switching data transmission network on the one hand, and in a public telephone network on the other hand, a station (14) is started, the networks being interconnected via a call server (15). The transmission network comprises an administration server (11), a plurality of subnets administered by the administration server and a plurality of stations (14), each linked to a subnet. The administration server stores a respective location information for each subnet. A station emits a lease request (301), destined for the administration server. Then, the station receives from the administration server, in response to the lease request, a lease (302) containing the location information of the subnet of the station. Next, the station emits, destined for the call server, a registration request (304) comprising an identifier of the station as well as the location information.

Abstract: The invention relates to a method for the automatic configuration of an IP telephony device and/or data from a data transmission network with packet switching, which enables the device to obtain a lease on a virtual sub-network while it is physically connected to another virtual sub-network. In this way, for example, another device can share the same physical access port to the networks via a switch, without the two devices necessarily receiving a lease on the same sub-network.