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Vigor 2820 + 21CN/ADSL2+

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17 Jul 2010 11:05 #62904 by rvsjimbo
Vigor 2820 + 21CN/ADSL2+ was created by rvsjimbo
Hello,

My ISP is ADSL24, and I've just upgraded to ADSL2+.

The upstream speed has gone up a little, but the downstream speed has gone down from the full 8Mb/s, which I was getting on standard ADSL to around 7.616Mb/s, as shown below:

ADSL Status Mode State Up Speed Down Speed SNR Margin Loop Att.
G.DMT SHOWTIME 928000 7616000 14 25

The new service has been in operation for a few days now. So, my question is, can the 2820 go faster than this on ADSL2+, or is it some kind of system limitation?

Thanks!

Paul
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17 Jul 2010 14:33 #62907 by voodle
Replied by voodle on topic Vigor 2820 + 21CN/ADSL2+
You need to change the modulation to multimode, at the moment it looks like the router is forcing G.DMT (standard ADSL) as the modulation type

It should get a bit higher, but the SNR does look a little bit low for those line stats so I'd expect around 10-12mbps

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18 Jul 2010 01:41 #62912 by rvsjimbo
Replied by rvsjimbo on topic Vigor 2820 + 21CN/ADSL2+
Hi,

Thanks very much for the reply. Right, it turns out that the router was already set to Multimode. So, I looked at what was available and there were I think 4 ADSL2/2+ modulation modes, and so I set the router to them one at at time, and it point-blank refused to sync up with any of them, so I think there may be a problem with the exchange equipment. I've reported this to ADSL24, but the tech support guy thinks it may be just a case of retraining...

Anyway, we'll see what happens on Monday, I guess.

Best Regards,

Paul
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18 Jul 2010 14:36 #62915 by middling
Replied by middling on topic Vigor 2820 + 21CN/ADSL2+
When BT upgrade the exchanges they keep you on standard ADSL. You need to log into the ADSL24 web portal and regrade your line to ADSL2+.

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18 Jul 2010 19:03 #62916 by rvsjimbo
Replied by rvsjimbo on topic Vigor 2820 + 21CN/ADSL2+
Hi Middling,

Yeah, the regrading has supposedly been done. We'll see what happens on Monday...

Best Regards,

Paul
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