Abstract: A mobile terminal for satellite communication of voice data, facsimile and computer information, which consists of an RF transceiver section, and a processor board. The processor board has two digital signal processors and a multi-task control processor for controlling the operation of the two signal processors. Net radio service is implemented in the mobile terminal and includes a priority 1 mode wherein a channel search is performed on a net radio channel database for an available channel if any problem is initially encountered in obtaining control of a specific communication channel such as a channel currently in use or a channel designated for use as a default channel.

Abstract: A mobile terminal apparatus for satellite communication of voice data, facsimile and computer information, which consists of an RF transceiver section, an optional cellular board, and a processor board. The processor board has two digital signal processors and a multi-task control processor for controlling the operation of the signal processor.

Abstract: A superframe lock subsystem includes a correlator which searches for and identifies a first unique word indicative of a frame boundary within a received bit stream during an initial acquisition state. A controller subsequently predicts frame boundaries in accordance with the first unique word. In a tentative frame lock state, the correlator searches for and determines if a second unique word exists at the frame boundary subsequent the frame boundary which corresponds to the first unique word. If the second unique word is determined to exist at the corresponding frame boundary and if a single frame duration separates the first and second unique words, the superframe lock subsystem enters a frame lock state. During the frame lock state, information of the corresponding frames is processed.