The invention proposes a method for establishing a bidirectional NAS signalization channel between a secure element 10 cooperating with a terminal 12 and a distant platform 11 through a Network Exposure Function 30, upon request of either the secure element 10 or the distant platform 11, the method comprising an exchange of containers 51 of data between the distant platform 11 and the secure element 10 through the Network Exposure Function 30.