The paper presents the results of a study of some electrical and optical properties of the five-component chalcogenide glasses in the quasi-binary (As₂Se₃)_100-x(SbSI)_x system. It is a system with the variable ratio of classical amorphous compound As ₂Se₃ and the molecule of antimony sulfoiodide, SbSI, which in the monocrystal form is characterized as a ferroelectric. The investigated glasses, with various concentration of SbSI, were synthesized from high-purity elemental components by fast cooling from the melt. The amorphous character of the samples was proved using standard optical and X-ray techniques. The temperature dependence of dc conductivity of bulk samples has been investigated in the range from room temperature to the temperature below the glass transition temperature T_g. On the basis of the obtained results, the conductivity activation energy was determined. By studying transparency spectra in a wide range of optical and IR part of the electromagnetic radiation, it was found that the position of the absorption edge depends on the Sb content. Optical band gap and tail-state region were determined.