TERRA-FDXII comes with 2 balanced mic/line inputs and 2 balanced line outputs, o ering full duplex communication. A Micro SD card interface is provided for playback and backup of pre-recorded playlists and announcements. 3 contact inputs can work with RAC 5/RAC 8 source selector and volume controller and event triggering such as call/hang up, music play/stop, 3rd party command, etc. And the 2 relay contact outputs can be programmed to control an external device. TERRA-FDXII is an ideal IP solution for any applications that require a simple device for paging, full duplex intercom with AEC function and play streaming audio over IP network. It is SIP compliant making it compatible with IP intercom and phone systems such as AVAYA, CISCO & 3COM. The TERRA-FDXII is easily congured via a web interface providing full control over features such as priority and event management, scheduler & output levels. The biggest feature of TERRA -FDXII is that it has a complete sound DSP processing function including Level Control, AGC, ANR, PEQ, Hi/Lo Pass Filter, Ducker and Comp/Limiter.