Analysis by D L Sidebottom of the dispersive frequency response of the real-part of the conductivity,σ′(ω), for many alkali phosphate and metaphosphate glasses, using a fitting modelinvolving a ‘universal dynamic response’ power law with an exponentn and a constant-lossterm, led to anomalous n behaviour that he explained as arising from variable constriction of the local cation conductionspace. In order to obtain adequate fits, he eliminated from the data all low-frequency decreases ofσ′(ω) below the dc plateau, ones actually associated with electrode effects. Such a cut-off doesnot, however, eliminate electrode effects possibly present in the high-frequency part of thedata range. The results of the present detailed analysis and fitting of both synthetic dataand several of his experimental data sets show unequivocally that his anomalousn behaviour arose from neglecting electrode effects. Their inclusion, with or without datacut-off in the fitting model, leads to the expected high-frequency slope value ofn = 2/3 associated with bulk conduction, as required by recently published topologicaleffective-dimension considerations for dielectric relaxation in conductive systems.Further, the effects of the inclusion in a full fitting model of series and possiblyparallel complex constant-phase-element contributions, representing electrode andnearly constant loss effects, respectively, have been investigated in detail. Suchcomposite models usually lead to best fitting of either the full or cut-off complex datawhen they include the semi-universal, topologically based K1 bulk model, oneindirectly derived from the assumption of stretched-exponential temporal behaviour.