Abstract: Communications system comprising a set of interface devices adapted to be coupled to a public switch telephone network (PSTN) and radio transceivers. The interface devices are configured to serve in various geographic regions. The radio transceivers are coupled to the interface devices in the set of interface devices. The radio transceivers are for communication with mobile subscribers. The mobile subscribers each have a home region. The circuitry coupled to the set of interfaces routes a call through a path including an interface device that serves the mobile subscriber's home region, for a call involving the PSTN and a mobile subscriber located outside the mobile subscriber's home region.

Abstract: A mobile communications system including a plurality of base stations. The system includes a plurality of mobile telephones. Each mobile telephone communicates with at least a base station from the plurality of base station using a timeslot and a frame. The frame has a plurality of timeslots for the base station to use to communicate with the various of the plurality of mobile telephones in a cell covered by the base station. Each mobile telephone has a single radio capable of communication on various frequencies. The radio is not capable of communicating on different frequencies on adjacent timeslots in a frame. A mobile telephone may establish communication with a first base station on a particular timeslot in a frame. If another timeslot is available in the frame in a second base station, communication may be established with the second base station on another timeslot in the frame.

Abstract: Method of assigning a fixed subscriber unit (FSU) to communicate with a particular base station and a system including a plurality of wireless FSUs. The system includes a plurality of base stations, which are coupled to a telecommunications network. Each FSU is coupled to a subscriber communication device, and each FSU is configured to communicate wirelessly with at least a base station. The FSU measures signal strength of a set of base stations. The FSU sends a message with the measured signal strength of the set of base stations to a base station. Circuitry coupled to the base station determines at least a base station to which the FSU is to be assigned based on the message and additional information in the circuitry coupled to the base station. In response to the determining by the circuitry coupled to the base station, the base station sends to the FSU a message including the base station to which the FSU is to be assigned.