Dynamisk gruppradio som använder existerande telefoniinfrastruktur

摘要

A group radio system (10) uses a group radio controller (230) to connect and manage remote units (20-100) through a wireline switched telephony network. The group radio controller receives voice or data from any of the remote units and repeats this to the others who are connected to the group channel. The group radio controller also assigns remote units in communication with the group channel via satellites (300,400) and other remote units also in communication with the group channel via a terrestrial cellular host network (90) to be anchor radios. The use of anchor radios for these types of users significantly lowers the cost to the group for this type of global radio service.