[Asterisk-Users] what is the best codec for low bandwidth? for quality?

[Andrew Kohlsmith]

> GSM is fairly low bandwidth and sounds pretty good. G711 (ulaw/alaw) is
> by far the best, you can send faxes with it (and if I am not mistaken
> Ilbic)

My preferred codec is ILBC.  Open-source, pretty low bitrate and excellent 
MOS.  GSM is second for me, and then after that just ulaw/alaw.

Regards,
Andrew