providing the highest level of communication services

Better voip experience with:
Jabra, Plantronics headset and
Plathosys and Eutectics handset
and any standard audio devices

Voice engine

DRC has a lot of voice codecs, both narrowband and wideband and,depending on the codec, with different sampling rates from 8KHz to 48KHz.
Voice engine support echo cancel, adaptive jitter buffer, PLC (packet loss concealment), VAD (voice activity detection), noise reduction, auto gain.

The basic set of codecs (available for commercial and free versions) includes:
G711 u-Law
G711 a-Law
GSM

The advanced set of codecs (available with commercial versions) also provides more codecs
G.729
G722
G722.1
iLBC
AMR / AMRWB
Speex / SpeexWB
OPUS
ISAC


Note: Some require a specific license. If not for testing purposes, then, you can use some additional codecs only if you have the specific license of the licensee.