Abstract: A method and apparatus for expanding control switch selectivity in a portable communication system is provided. A rotary control switch is remapped based on the presence of two or more switches in the system thereby increasing the number of user selectable switch features, such as user selectable radio channels. The remapping can occur automatically without the need for hardware changes. The improved user interface can extend channel range selection in a portable communication system having a portable radio and radio accessory.

Abstract: A method and apparatus for expanding control switch selectivity in a portable communication system is provided. A rotary control switch is remapped based on the presence of two or more switches in the system thereby increasing the number of user selectable switch features, such as user selectable radio channels. The remapping can occur automatically without the need for hardware changes. The improved user interface can extend channel range selection in a portable communication system having a portable radio and radio accessory.

Abstract: A system (100) and method (200) for providing a multiple channel site for supporting talk group activity is provided. The method includes determining (202) an arrival time (141) of a plurality of Vehicular Repeater System (VRS) (101-103) to a vicinity (140), identifying (204) talk group activity among the plurality of PSUs (171-176) in the vicinity, and assigning VRSs to talk groups in order of arrival time and talk group activity. A master VRS maintains and updates (322) a list of recently active talk groups (TG), orders (324) the list by frequency of use of a talk group, forwards the list to slave VRSs and PSUs, and allocates (326) single channels in view of the list to the slave VRSs. PSUs in the vicinity can read the assignment list and update their communication channel based on a selected talk group in the list.

Abstract: A system (100) and method (200) for providing a multiple channel site for supporting talk group activity is provided. The method includes determining (202) an arrival time (141) of a plurality of Vehicular Repeater System (VRS) (101-103) to a vicinity (140), identifying (204) talk group activity among the plurality of PSUs (171-176) in the vicinity, and assigning VRSs to talk groups in order of arrival time and talk group activity. A master VRS maintains and updates (322) a list of recently active talk groups (TG), orders (324) the list by frequency of use of a talk group, forwards the list to slave VRSs and PSUs, and allocates (326) single channels in view of the list to the slave VRSs. PSUs in the vicinity can read the assignment list and update their communication channel based on a selected talk group in the list.