I have recently been upgraded by TelstraClear to their new plan allowing download speeds of 10Mbps. I have my SPA2102 connectly directly to the TC modem, and then to my Wireless G router serving my client PCs. All static IPs around.
When I run a test on speedtest.net using my laptop, I can only get a max of 6-7Mbps. I tested a direct connection to the modem and get speeds of 10-12. Originally, I figured this was due to running a wireless network, interference, etc. However, I've done some more testing and when I remove the SPA2102 I can achieve max speeds on all my wireless clients. Put the SPA back in, and speeds drop. I also tested an ethernet connection direct to the SPA and cable modem, same slower result of 6-7Mbps. This confirms the culprit seems to be the SPA.
So - is the SPA2102 limiting my throughput? Maybe the NAT/router cannot handle these speeds for some reason? Any thoughts?