Abstract: A wireless communication device facilitated by a network controller and corresponding methods select a list of requested groups for affiliation from a list of associated groups. The list of requested groups is sent to a network infrastructure where it is processed according to a set of rules. A final list of groups for affiliation is made and the network infrastructure is configured to support the affiliated groups. The list of affiliated groups may also be sent to the wireless communication device.

Abstract: The present invention encompasses a method of facilitating an audio source change in a digital radio communication system (100). A typical system includes a plurality of audio source units ( 101-103), a plurality of audio destination units (105, 106), and a switching unit (108) for rendering one of the plurality of audio source units (101-103) operable. Upon receipt (302) of an information-bearing frame from an audio source unit, a frame sequence value is identified (304). The expected frame sequence value is then determined (306), and this value is compared to the identified frame sequence value to determine whether or not the received frame sequence value matches the expected frame sequence value. When the frame sequence values match, it is assumed that the frames were sourced from the same audio source unit (i.e., no source change has occurred).