METHOD, SYSTEM AND DEVICE FOR ESTABLISHING CALLS OVER IP NETWORK

摘要

A method for establishing a communication via a public IP network between a 1st user U1 (110) belonging to a private IP network (111) and a 2nd user U2 (112), wherein the 1st user U1 is associated with a 1st signaling device SD1 (116) for performing a signaling session to request a multimedia session, the 1st user U1 is also associated with a 1st edge device ED1 (120) having a public IP address in the public IP network and participating in the requested multimedia session between the 1st user U1 and the 2nd user U2. The method gives a solution for a case where at least the U1 has a private IP address. The method, to be performed on the site, requires providing the ED1 with an additional functionality to handle requests of U1 and to behave as an intermediate device between the user U1 and the signaling device SD1.