Syncing at 7296mbps but downloading at....

[nickgrant]

My sky router is pretty stable and can stay connected for weeks at a time without any resyncs. At the moment i'm connected at 7296mbps but the fastest I can download is between 6300-6600mbps (780 KB/sec on average).

I'm connected via cat5e cable, i'm just wondering if it's normal for my line not to use the full bandwidth.

Thanks.

[Shonk]

yes
atm overheads are huge on adsl
im synced at the max 20479
and get 17.69 mbit

[buddbuttocks]

yes
atm overheads are huge on adsl
im synced at the max 20479
and get 17.69 mbit

Your line is probably also using some level of INP, at the cost of some bandwidth.

[Scubbie]

My sky router is pretty stable and can stay connected for weeks at a time without any resyncs. At the moment i'm connected at 7296mbps but the fastest I can download is between 6300-6600mbps (780 KB/sec on average).

I'm connected via cat5e cable, i'm just wondering if it's normal for my line not to use the full bandwidth.

Thanks.

You are unfortunately falling into the trap of getting confused by different letters which essentially mean the same thing.

For example kbps is not the same as KB/sec

780 KB/sec is the same as what you are getting and would be quoted from somewhere such as a torrent program.

Torrents are notoriously upsetting for some people as they always expect to get the peak performance. The truth is that you are also limited by the maximum that someone is uploading to your connection. If I'm lucky, I might occasionaly get a download at 1.6 or 1.7Mb/sec, but more often it is not this good.

[Shonk]

Im not really sure how impulse noise protection works
but here's my settings

INPup = 1.68
INPdown = 0.62
BisADsInp = MinPossible

if you read up on adsl overheads
im getting the max true dl rate for the sync speed

Your line is probably also using some level of INP, at the cost of some bandwidth.

[I_Hate_Sky_Awnsers]

Coped from think broadband.

Googling around I found "A significant portion of the end-to-end delay in high-rate DSL systems is due to the impulse noise protection scheme employed in order to shield those systems against random, non-stationary noise bursts of high energy that appear on the copper lines. Systems are protected from impulse noise using a combination of interleaving and Reed-Solomon codes. In order to lower the end-to-end delay without reducing the data rate that is available to the user, one needs to decrease the interleaver depth. This paper presents a way to achieve this reduction without compromising neither the robustness to noise bursts nor the data rate of the system. The proposed algorithm relies on the inner code used by many DSL systems and uses the metric provided by the inner code decoder at the receiver."

Essentially you loose sync speed but gain stability.

[I_Hate_Sky_Awnsers]

If you are SVBN then only some profiles can be set with 0 INP - see This for which ones.

If you have your line rental with anyone other than sky then any line can be set to 0 INP