FIELD: information technology.
SUBSTANCE: dynamic grouping function and members of an intended group are selected through a man-machine interface of a radiophone, a control packet is generated in a coding format and an extensible interface, the coding format and the extensible interface being inherent to a preset protocol stack module, and the control frame is then transmitted in a control frame to a corresponding receiving end. The receiving end decodes the control frame and initiates a frequency modification module to modify frequency modification information by adding the group ID of the intended group.
EFFECT: performing a scheduling function, and saving time in an emergency situation for rapid and convenient dealing with an incident.
10 cl, 18 dwg, 6 tbl
