One-to-many comparisons of callers’ voice prints with known voice prints to identify any matches between them. At least one support element is coaxially configured and arranged in the cavity of the sheathing tube such that the sheathing tube is clamped in place between the grip element and the support element in the connecting region. For each virtual guest, the system uses the credential to collect a single Globally Unique Identifier previously generated and stored in-guest by any data protection agent. The processing agent sums the flows for each of the usage devices, determines whether any of the summed flows reach the usage limit, and selects at least one flow restriction rule for the subset of usage devices reaching the usage limit. By the function of the phase correction circuit, another circuit using the output signal of the transistor can work correctly. The mobile communication system comprises position means for locating the geographical position of individual mobile terminals.