The conductivity relaxation parameters of some Ag+ conducting tellurite glasses containing either AgI or the (AgI)(0.75)-(TII)(0.25) eutectic mixture have been determined from an analysis of ac conductivity data measured in a wide temperature range. Transport properties in these materials appear as due to an Ag+ ion hopping mechanism. The stretched exponential function exp-(t/tau(sigma))(beta) has been used to describe the conductivity relaxation. The relaxation parameters have been investigated as a function of the AgI rate. The results obtained are shown to be in good agreement with the predictions of the Ngai coupling model. A correlation has been also established for the glasses investigated between the stretched exponent beta of conductivity relaxation function with the decoupling index R(tau)(T-g), proposed by Angell, where R(tau)(T-g) is the tau(s)/tau(sigma) ratio of the average structural and conductivity relaxation times at the glass transition temperature T-g.