I am using iaxComm with 18866 VOIP and have everything working fine. What\ncodec should I use for the best quality, I sound like I've got my head in a\nbucket at the moment (lots of echo)\nMy oprions are: iLBC, Speex, GSM, a-law, u-law. There is also a sppex tuning\nfacility that I don't really understand where you can change quality, bit\nrate. avergae bit rate, and complexity. Thanks in advance.