Summary: So far can't get this to work with my Asterisk system - seems the device wants to act as a router to the Internet. The SPA3102 was a replacement to an earlier version that went bad. Still working on trying to make the new one work.
Router part limited to ~10 Mb/s throughput, so you probably want to use it in bridge mode
27 November 2014
Summary: Replaced a failed Sipura SPA3000 with this one. When I tested the router part they added, it limited my throughput to ~10 Mb/s but fortunately it has much more throughput in bridge mode so I could still have my entire LAN on a switch downstream from this box and let it prioritize my VoIP traffic.