Method and system for interactive communication between two telephone sets via the internet

A method for communicating between at least two users each furnished with a telephone apparatus of a switched telephone network, via the Internet network, each telephone apparatus being directly connected locally to an associated interface device, the method comprising:

• dialing, by a first user using the switched telephone network, a telephone number of a second user using a first telephone apparatus,
• signalling to a first interface device to perform a hang-up and reconnection operation via the Internet network with the second interface device,
• performing, under control of the first interface device the hang-up and reconnection operation to establish communication with the second interface device via the Internet network,
• signalling, via each interface device that the hang-up and reconnection operation has completed, and
• communicating between the first and second users via the Internet network,
• wherein the step of signaling the first interface device comprises exchanging a respective appointment code relating to a predefined server via the switched telephone network, and
• wherein the step of performing the hang-up and reconnection operation comprises
• cutting direct communication via the switched telephone network,
• connecting the first and second interface devices via the Internet network
• to the predefined server,
• searching for the appointment code;
• and
• establishing communication between the users via the said Internet network using a result of the search.