I've got an ADSL2+ connection and live only 300m from the exchange (as the crow flies) so I expect to get a decent speed.
My modem syncs at 20898kbps and my IP profile is 19.5Mbps (according to BTW diagnostics) but the actual measured speed (on BTW speed test) is only 11Mbps. I have a Netgear DG834 modem which indicates line attenuation = 13db and Noise margin = 3db.
I've had ADSL2+ for a couple of months now so expect it to have settled down, but the achieved speed has never exceeded 11Mbps.
My understanding is that the achieved speed should be somewhere close to the IP profile speed as the IP profile is the throttling mechanism to prevent the local-loop bottleneck from causing buffer overflows and packet loss. Am I right or can anyone correct my understanding here?
I've talked to my ISP, Freeola (Entanet), and but they say the achieved speed is within acceptable limits and can't be investigated. One suspicion I have is that my ISP is capping my speed at 11Mbps, if so should I consider changing ISP? Obviously I'd like to get the highest speed possible.
Thanks for any feedback on this.
Edited by Decepticon (Wed 19-Sep-12 11:16:40)