A supranational and inter-PLMN physical private mobile telecommunications network includes at least one first (1) and one second (2) physical node that can cooperate with the respective different public mobile networks (PLMN1, PLMN2), , , ) referably located in different countries. These physical nodes have respective: functionalities selected from the group consisting of: masking functionality (M1, M2) to handle the interworking with the respective public mobile network (PLMN1, PLMN2), filtering functionality (F1, F2) to analyze the numbering of the internal call d/calling customer in relation to the identity of the calling/called party, a functionality managing the coordination and intelligent services (INCI, INC2), which can control the call between the physical node of origin and the physical node visited, and thus permits the management of the virtual user mobility between the physical nodes as they are involved as well as the: invocation of the intelligent services provided inside the different physical nodes, and an interworking functionality (ITW1, ITW2) configured so as to permit the interworking between signalling on Internet Protocol network (IP) and a circuit-switching signalling.