METHOD OF TRAVERSING ADDRESS TRANSLATION EQUIPMENT FOR SIP SIGNALLING MESSAGES BY TEMPORARY USE OF THE TCP TRANSPORT PROTOCOL.

摘要

Method for establishing a communication session between a first client (C1) situated within a first network (N1) and a second client (C2) by way of a signalling server (S) situated in a second network (N), consisting of a step of maintaining the association between a first address and a second address of the first client within address translation equipment, through the transmission of registration signalling messages by the first client. The server: - stores an incoming signalling message originating from the second client, - responds to the following registration message by a response message (RN) requesting the sending of a new registration message (MN + 1) using the TCP protocol, and - delivers the incoming signalling message (MI) after the new registration message is received.