We have studied the frequency dielectric spectra of silver sulfide nanowires synthesized in porous silicate glasses. A possible mechanism of the thermal superionic phase transition in the samples is discussed. In this work, based on the analysis of the DS, the following conclusion was made. After the superionic phase transition occurs, the octa coordinated Ag+ ions become mobile, representing the elements of a “viscous liquid”, while the tetra-coordinated Ag+ ions, remaining immobile (up to phonon vibrations), stabilize the crystal lattice of the material.