The TERRA-IEX is a 2-Channel audio over IP encoder/decoder. The balanced line input can be used as an audio source for your IP network, like a cd player or a sound card of a PC and be encoded in high quality MP3. A microphone can also be plugged on the mic input and be encoded in G.722. An optional S/PDIF input can also be used as a source. The TERRA-IEX streams its inputs in unicast or multicast. The same device provides also 2 independent balanced outputs for half duplex communication or for local outputs. By adding a USB memory stick, playlists can be used as a backup of the decoded stream or as a source for the IP streaming. The volume and the channel can be modified locally with an IR remote control or with a low-cost source selector, the RAC. Thanks to the analog inputs, powerful scenario can be implemented, like push buttons connected to the TERRA-IEX will send background music in predefined zones and another button will send the mic input for general announcement. At the same time a higher priority can be given to SIP emergency calls. Priority management, volume management, event management and scheduler are set up thanks to embedded webpages- an impressive audio over IP Terminal without direct need of a PC.