Raytheon Co. JPS Communications offers the NXU-2A, a new device that replaces its legacy NXU-2 Network eXtension Unit. The NXU-2A uses radio over Internet protocol (RoIP) and voice over Internet protocol (VoIP) technology to send and receive digital voice messages. The NXU-2A's new features are advantageous to trunking applications, handset users and customers who use multiple NXU-2s. The NXU-2A Network eXtension Unit is a general purpose, standalone device that connects communication equipment to a digital network (local area network, wide area network or Internet) using RoIP technology. It is intended for use with radios, radio communication consoles, and JPS products such as the ACU-1000 Interconnect Unit and the SNV-12 Signal-and-Noise Voter.