Will 10meg be stable?

[ScottulusMaximus]

These are my stats on 4meg:

Operational Mode ADSL G.DMT
Upstream 512 kbps
Downstream 4096 kbps
SNR Margin (Upstream) 12.0 db
SNR Margin (Downstream) 12.5 db
Line Attenuation (Upstream) 31.0 db
Line Attenuation (Downstream) 56.0 db

Will 10meg be usable or am I wasting my time? I see SNR is a bit low tonight, usually between 12 and 15.

 

[Crystal Web]

I'm afraid not. I'm surprised 4Mbps is stable with that downstream attenuation.

 

[ScottulusMaximus]

Any chance 10meg will get me onto ADSL2+ for some improvement?

 

[Crystal Web]

You can already adjust your modem settings to sync using ADSL2+, but it won't change the attenuation in any substantial manner as attenuation is a factor of distance.

 

[ScottulusMaximus]

/thread

Setting it to connect on 2+ kills the sync as well.

 

[cavedog]

I think 43 or 44dB is max for full 10Mbps if you have a decent line with a nice and high SNR. Anything higher will be a problem. I guess you line max is somewhere between 6Mbps and 7Mbps but not sure how the SNR will react to those speeds....

 

[Chevron]

I'd say you'd be fine with 6Meg, Maybe 7meg if you are lucky. Definitely not 10Meg.

 

[Bryn]

My line can just manage 8Mbps. The limitation is SNR, and mine is 6.1dB. The line is completely stable though and doesn't drop connections. Speed tests are at 7Mbps.

So being at your line's limit doesn't mean you can't have a good connection.

 

[acp]

Considering moving from 4 to 10:

Based on the below, what would I get with the following:

Upstream 511 kbps
Downstream 4096 kbps
SNR Margin (Upstream) 19.5 db
SNR Margin (Downstream) 12.5 db
Line Attenuation (Upstream) 43.0 db
Line Attenuation (Downstream) 19.0 db

Edit: guessing around 8 if I'm lucky, or not so much?

 

[ScottulusMaximus]

Decided to give it a go as it's the end of the month and will only be charged a tiny amount pro-rata once it's activated to see what I'll sync at. Will change back if it's too unstable or I sync at like 5meg.

 

[acp]

Considering moving from 4 to 10:

Based on the below, what would I get with the following:

Upstream 511 kbps
Downstream 4096 kbps
SNR Margin (Upstream) 19.5 db
SNR Margin (Downstream) 12.5 db
Line Attenuation (Upstream) 43.0 db
Line Attenuation (Downstream) 19.0 db

Edit: guessing around 8 if I'm lucky, or not so much?

Nevermind... Line was upgraded within hours, this is the result:

 

[Bryn]

Nevermind... Line was upgraded within hours, this is the result:

View attachment 186745

Just give it a chance and see how it goes. If you experience dropped connections it's probably because of the low SNR. Mine is only slightly better than yours at 6.5dB (was 6.1 for months until a few days ago - weird) and doesn't give me issues, so maybe you'll be fine. My attenuation is much better than yours though at 16.5dB.

 

[acp]

Just give it a chance and see how it goes. If you experience dropped connections it's probably because of the low SNR. Mine is only slightly better than yours at 6.5dB (was 6.1 for months until a few days ago - weird) and doesn't give me issues, so maybe you'll be fine. My attenuation is much better than yours though at 16.5dB.

Thanks. So far so good. Had a solid connection since yesterday until this morning when Eskom decided it should end...

Not getting amazing speeds though. Upstream seems good at between 850-1000 Kbps, but down averaging anywhere between 2.5Mbps (last night so might have been usual exchange congestion during peak) and about 5.8Mbps this morning via Afrihost capped.