FreeSwitch has started supporting CELT, a new open source audio codec that allows for CD-quality voice and sound transmission. This certainly a boost for VoIP World. CELT is an "ultra-low delay" audio codec that supports both voice and music and said to carry 48kHz VoIP in 48kbps of bandwidth. Compare that to PCM mu-law codec, G.711u, which consumes 64kbps of bandwidth to carry 8kHz audio!
I have not yet tested the codec but plan to integrate the mod_celt and the new FreeSwitch client very soon in my testing rig. Main while, you can find more information at FreeSwitch Post and the following links.
Wednesday, December 31, 2008