The intensity of two electron paramagnetic resonance signals with effective g-values of 2.0 and 4.3 was measured in the temperature region 4–40 K in Mn2+-doped halide glasses of the type CdCl2PbCl2KI and in chalcohalide glasses of the type GeS2Ga2S3MnCl2. The experimental ratio of the intensities of the two resonances in glasses with an Mn2+ ion content lower than 1.0 mol% MnCl2 was fitted to the ratio of the two Boltzmann distribution functions calculated with the spin-Hamiltonian parameters of the two magnetically active centers. Some type of exchange interaction was assumed to be present in the other glasses. This interpretation agrees with the experimental evidence of changes of the shape of the resonance signal as well as with the simulation of the intensity ratio curves.