NXU-2A Network Extension Unit

The NXU-2A Network Extension Unit uses our proprietary Radio over Internet Protocol (RoIP) technology to transfer digital voice and serial data. It is optimized for use with radios, radio communication consoles, and other JPS products such as the ACU product line. The device features a variety of codecs, allowing audio links to be configured for the optimal combination of bandwidth and signal quality. Provides a low cost, flexible method for extending radio communications over existing network infrastructure; eliminating the need for leased lines and microwave sites.

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.

The NXU-2A’s features include the ability to delay transmit (TX) and receive (RX) audio, voice modulation recognition (VMR), support of multicast IP and quality of service (QoS), a selectable 20 decibel gain boost on audio input, and a “restore to factory defaults” setting.

The NXU-2A’s ability to delay TX and RX audio is ideal for trunking applications where extra delay may be required. The NXU-2A’s added ability to support multicast Internet protocol (IP) is optimal for customers who use multiple NXUs. Multicast IP reduces the amount of network traffic, which ensures that each unit in the multicast group will receive communication.

The NXU-2A’s additional hardware offerings include VMR and a “restore to factory defaults” setting. VMR, as with carrier operated relay (COR) and voice operated transmit (VOX) capabilities, determines when a radio’s squelch function is active. The ability to reset the NXU-2A to a well-defined factory default state overcomes the problem of unknown or forgotten IP addresses.

QoS support allows operators to assign a priority level to RoIP data over other types of data. For example, if the network is over-utilized, NXU data will take priority and voice communication will be transmitted first. An additional gain boost of +20 decibels will enhance the received audio and will compensate for low drive level devices such as handsets or microphones.

“The NXU-2A monitors its network connection and adjusts its parameters automatically, so that it provides optimal performance under varying network conditions. This is important to customers who use our VoIP products for critical applications in which system performance and network availability are essential. The new module ensures that data transmissions are uncompromised by changing network conditions.