Thank you for providing this useful link to us for sharing. The hardware is extremly cheap. I believe that with the OpenWRT, we may install Asterisk server in it too via ipkg method.
ARM CPU clocked @1.2GHz armv5
with 128/256MB RAM/Flash,
4 USB2 ports (3 standard and 1 mini for a Seagate FreeAgent USB hard drive),
and an RJ45 port (10/100/1000Mbps).