The TERRA-FXO provides Full Duplex communication for IP intercom and telephone, comes with 2 sets of phone interfaces, and DTMF management for receiving calls or transmitting.

The TERRA-FXO is equipped with G.711, G.722, G.726, G.727, G.729, MP3 audio codec, AAC+ decoder, paging with unicast, multicast, broadcast, as well as AEC (Acoustic Echo Cancellation) and NR (Noise Reduction). Power is supplied via POE and/or an AC/DC power adapter.