Abstract: Encryption keys in a communication system are updated according to rekey groups having a common set of encryption keys or CKRs. Each group includes a number of radios with active and inactive keysets. A database records the relationships between rekey groups and keys, and the status of their keysets. An operator first determines one or more keys to be updated. New keys are then transmitted to each radio in one or more rekey groups using respective rekey messages. The new keys are stored in the inactive keysets of the radios. The inactive keysets are then activated using respective changeover messages. Deployment of new keys is carried out by software in the form of automated update tasks.

Abstract: A graphical management interface for a radio station that simplifies programming interactions for a user. The interface has a display region for presenting programmed functions of the station. The region has first and second controls for user selection of input conditions to form programmed functions, and for user selection of output actions to be carried out by the station in response to the selected input conditions. At least one further control for user editing of the functions is also provided. The first and second controls list substantially every available input condition and every available output action of the station for selection by the user. Backplane management of the station can also be done in software.

Abstract: A portable radio telephone having an antenna projecting from the top surface. The antenna can be pivoted from an upright position to an angled position.

Abstract: The invention relates to a method for inputting information into a mobile radio telephone (1) via its input data channel by appropriately moving a motion detector (10) which belongs to the radio telephone (1) and senses this movement. In this arrangement, the mobile radio telephone (1) can be constructed to be pen-shaped and can contain the motion detector (10) in its pen point.

Abstract: A portable radio telephone having an antenna which can be pivoted between a first position in which it projects from a surface of the telephone and a second position in which it projects from the surface of the telephone. The second position of the antenna relative to the surface of the telephone is different than the first position. The antenna is pivoted from the first position to the second position to control the operation of the telephone.