ADSL2+ stats

I have recently been moved to an ADSL2+ connection. Before the move I was getting rock solid 8128kb/s downstream and 448kb/s upstream. Here are the current stats from my DG834G router. It's stayed fairly consistent for a week or more.

ADSL Link Downstream Upstream
Connection Speed 13029 kbps 1072 kbps
Line Attenuation 16 db 4 db
Noise Margin 6 db 7 db

This is a worthwhile speed boost, especially to the upstream speed. Do these numbers look sensible? Can I expect any more speed?

I'm sorry to say in my opinion those are terrible speeds.

With that attenuation I would expect over 18Mbps downstream and whatever upstream the WBMC connection allows - I thought it was 1.3-1.4Mbps.

Have you optimised your home wiring? Have a look at the Ring/Bell wire and Miscellaneous nasties links on my Troubleshooting page.

Agreed, very poor with that attenuation. Some noise going on somewhere.

I don't think there's much scope for improving my setup.

There is an ADSL splitter faceplate at the master socket (scrounged from the BT man who took out my Home Highway some years ago). Just a short lead from there to the DG834G. With this setup I presume the wiring on the phone side will not affect speeds.

The DG834G is old but flashed with the latest firmware.

Try a normal filter plugged into the test socket on the wall at the back in this pic.

The faceplate you say you have will not be filtering the ring/bell wire. Only the latest Openreach ones do that - or third-party equivalents.

Did you explicitly request the maximum upstream as normally we'd cap it at 448kbps?

In reply to a post by RobertoS:

Try a normal filter plugged into the test socket on the wall at the back in this pic.

The faceplate you say you have will not be filtering the ring/bell wire. Only the latest Openreach ones do that - or third-party equivalents.

I don't understand - an ADSL faceplate has a separate ADSL output so what does it matter whether the bell wire is filtered on the phone output?

Yes - it does matter.

The ring wire acts as a radio antenna/aerial and feeds noise at ADSLx frequencies back onto the line unless it is filtered or disconnected. Thus screwing up the broadband.

In reply to a post by RobertoS:

Yes - it does matter.

The ring wire acts as a radio antenna/aerial and feeds noise at ADSLx frequencies back onto the line unless it is filtered or disconnected. Thus screwing up the broadband.

OK thanks, I'd better check mine again because I can't remember whether I disconnected the ring wire. It's one of these:

http://www.clarity.it/xcart/product.php?productid=16...

In reply to a post by kasg:

I hadn't spotted on your first post that you are not the OP to whom my suggestion was addressed.

In your case, with the Clarity faceplate, I don't know whether a ring wire filter is included in the circuitry. I know it is with the ADSL Nation version and the latest Openreach NTE5A. The OP has a standard ADSL filtered faceplate which definitely did not filter the ring wire.

If you are in doubt do as I suggested to the OP. Re-sync and take stats, (if the connection has been up for a while the comparison becomes invalid), then connect with a normal filter to the test socket and take the stats again.