Alcatel Lucent

Vincent Hiribarren

Thomas Levy

Julien Robinson

Thomas Froment

Method of setting up a communication session between a calling client (C) and a called client (C), through a communication network (SN, SN, SN) containing at least one address translation device (NAT, NAT). This method contains stages for the transmission of signaling messages (fs), passing through at least one address translation device and allowing the exchange of the physical addresses of the clients. At least one of the clients implements a solution for the traversing of address translation devices. The method is innovative in that at least one client adds, within the sent signaling messages, a parameter representing the implementation of the traversing solution and that, in the presence of such a parameter, the network devices do not implement their own solutions for the traversing of address translation devices.

Traversing of NAT address translation equipment for signaling messages compliant with SIP protocol

Method of setting up a communication session (fm) between a calling communication client (C) and a called communication client (C), through a communication network (SN, SN, SN) comprising at least one address translation equipment (NAT, NAT). It comprises steps for transmission of signal messages (fs), transiting through address translation equipment and enabling interchange of physical addresses of communication clients to set up the communication session. This method is characterized in that at least one client transmits at least one signal message containing a physical address in a first location, and coded information containing this particular physical address in a distinct second location.

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Linas, France

Vincent Hiribarren