Response from: Richard (Check me out!)

Skype's audio has deteriorated quite a bit in the last years. Using it in 2004 it was a great experience, now I have like 1 out of 10 call that has acceptable call quality. Have they forgotten to upgrade their infrastructure? Rich

Response from: James Body (Check me out!)

Choice of codecs and how the media is handled between User Agents is an essential part of maintaining voice quality. We (at Truphone) have spent a very large amount of effort in getting this just right - consequently reviews of our audio quality out to PSTN, particularly to cellular phones is normally extremely favorable. I used to illustrate this at speaking events by comparing Truphone audio quality with that of Skype - however, recently Skype upgraded their codec selection - they now use similar codecs to us - and the result is that the speech quality of calls (using the new client) to cellular phones is hugely improved! Well done Skype!

Response from: Dameon Welch-Abernathy (Check me out!)

Codec selection makes a huge different, but a lot of things come into play. Do the endpoints support the codecs? Do the endpoints have enough horsepower to support those codecs? As packet loss increases, how well does the codec respond?