FIELD: logging mobile telephone communication systems in response to relevant request. SUBSTANCE: mobile telephone communication system has base station that renders communication services to respective subscriber's mobile stations within its coverage range and mobile switching center that functions to connect base station to multiple-access telephone network being serviced; mobile switching center sends message incorporating logging request command for mentioned base station and asks if identified mobile station is to be logged. Message holding logging request command includes type- of-message information, cell-identifier-list information, mobile-identity information, slot-cycle-index information, and type-of- signaling information. EFFECT: enlarged application range of message format including logging request command. 23 cl, 3 dwg
