While it’s not going to win any awards, Aastra (www.aastra.com) has put together a little video demonstrating the difference between G.711 and G.722 on its phones.
Available at http://www.youtube.com/watch?v=a5G4pbsR3OI, the 53 second long video shows a guy with a too-clean desk picking up a G.711 phone handset, speaking into it – with the audio directly routed to the YouTube sound track – and then repeating the process on a phone using a “Hi-Q / G.722” codec.
Your satisfaction may vary depending upon your speakers.
