Im running on the G.DMT to try get a better speed. I read it on a forum somewhere that its better for longer lines. Am i right saying it is?

In reply to a post by TomPoolHD:

Im running on the G.DMT to try get a better speed. I read it on a forum somewhere that its better for longer lines. Am i right saying it is?

it can be, but so can plain adsl2.

if a long line I would try plain adsl2 before going back to g.dmt.

ADSL2 (not ADSL2+) is likely to to be better than G.DMT, as this uses the same set of frequencies, but with a more efficient algorithm.
ADSL2+ uses the same algorithm as ADSL2, but with the addition of more (higher) frequencies which attenuate more quickly.

Simplistically, try all three and see which performs best for you.

Edited by deleted (Fri 22-Nov-13 19:15:00)

From my experience with a bad line, it is best to leave your kit on 'auto' and get your ISP to get the DSLAM set to bog standard adsl. My line increased speed quite a lot, and also was stable (as opposed to making the modem try to do it).

Nick

Well the router i have is the Billion 7800N. I bought this after looking on forums and finding the best router for long lines. It also features the SNR tweaking ability which i think it a very nice feature.

This is the G.DMT stats:
DSP Firmware Version A2pB025f.d22k
DMT Status No Defect
Operational Mode G.DMT
Upstream 736
Downstream 4960
SNR Margin(Upstream) 7.0
SNR Margin(Downstream) 4.9
Line Attenuation(Upstream) 31.5
Line Attenuation(Downstream) 53.0

ADSL2
Parameters
DSP Firmware Version A2pB025f.d22k
DMT Status No Defect
Operational Mode ADSL2
Upstream 779
Downstream 5123
SNR Margin(Upstream) 5.9
SNR Margin(Downstream) 2.8 <----- Bearing in mind its 7:37pm on a Friday.
Line Attenuation(Upstream) 32.1
Line Attenuation(Downstream) 52.5 <------- Reduced my attenuation ?

I will try ADSL2+ after i try the ADSL2 for 3 days.

Oh and by the way i appreciate all the help you people have been giving me. Thankyou

Edited by deleted (Fri 22-Nov-13 19:38:53)

While you can recommend hardware and settings, the joy of it is until you try all the combinations hard to say what is best for an individual line

No need to delay trying all combinations. Most compariable when done close togerher.

Only problem is that plusnet drop my line profile down to 3mb/s and it all slows down if i restart the router a lot.

EDIT: just did a speed test and got 3.39mb/s.. Rang plusnet and apparently the BT equipment set the speed at 3.50mb/s and will release over time.. Is this correct ?

Thanks

Edited by deleted (Fri 22-Nov-13 21:42:25)

Just purchased the 0.5m RJ11 cable. What's the difference to a normal cable ?