A telecommunications or power transport cable is structurally reinforced by incorporating at least one reinforcing wire or armoring comprising one or more layers of wires. If the correlation result falls below a threshold, indicating a loss of frame synchronization, a plurality of correlations are performed, in each case using the stored complex amplitudes of the synchronizing frame multiplied by a respective complex value representing a respective complex derotation corresponding to a respective possible time shift of the synchronizing frame. The guide groove has one or more dissymmetric regions in the radius direction where the inclined angles \u03b1 and \u03b2 are different.