I recently got one and so far I like it. It's tiny and lightweight and seems to work well. In contrast with the Cisco ATA-186 it is replacing, it was a breeze to configure (no more than 3 minutes in my case, and it worked on the first try). Sound quality seems fine. At the moment I'm using it in Europe to connect to an Asterisk server in the USA; it'll get its true trial by fire when I bring it back to Asia next week.