FIELD: physics, communications.
SUBSTANCE: invention concerns mobile communication systems. The method involves security check for security setting control message; processing of security setting control message and reset of at least one media security variable by new security information if security setting control message passes security check, and discarding the security setting control message and leaving at least one media security variable unchanged if security setting control message does not pass security check.
EFFECT: increased security of information transferred.
11 cl, 5 dwg
