Abstract: A system for transmitting information in a wireless network includes at least one mobile transponder, each transponder adapted to be on the person of a user; an area controller gateway for controlling and managing the network, the area controller gateway operatively connected to the at least one mobile transponder; and a central monitoring station adapted to receive information from the at least one mobile transponder via the area controller gateway and to transmit other information to the at least one mobile transponder via the area controller gateway. The central monitoring station is operatively connected to the area controller gateway by an interne or cellular connection. The system may include a repeater adapted to receive information from the at least one mobile transponder and to transmit said information to the area controller gateway. The mobile transponder may be a duress pendant to provide duress notification or coverage to the user.

Abstract: A wireless communications network which provides directed transmissions between components of the network is provided. The components within the wireless communications include a master apparatus, a plurality of remote devices, and a plurality of repeaters. The components within the wireless communications network communicate using messages which have a control field and at least one information field. Information within the control field is used by components to make determinations for retransmitting the message, or transmitting a predefined response to the message, such as a signal strength response. The components within the network use the messages to make a determination of a communications target, which may be used as a primary contact for transmitting information, automatically, and may repeat the determination at predetermined intervals.