FIELD: wireless communication systems; authentication of mobile stations in cellular radio communication systems. SUBSTANCE: proposed method and device used for distributing authentication keys (A- keys) enable mobile stations to receive command entered by user for selecting A-key out of plurality of probable values saved in memory including value given by default and user-given client s value of A-key. In response to command mobile station can set A-key in its memory to value given by default or to internal generated or pre-saved random value, or to client s value entered by user. Command, irrespective of whether it is meant for selecting value set by default, random, or client s value, may be entered in the course of programming mobile station number assignment module. EFFECT: enhanced precision of channel adjustment. 20 cl, 4 dwg
