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Standard User tsh
(learned) Mon 27-Jun-11 10:22:22
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Goof router for long line


[link to this post]
 
My DG834GT seems to be on the blink, so any recommendations for a good modem which works well on a long line? (63.5dB attenuation, currently getting about 1.6M)
I need to be able to adjust target SNR since BT seem to have my line set for 9bB margin, which is excessive. Cost isn't much of an issue, would rather have a reliable connection...
Standard User MHC
(legend) Mon 27-Jun-11 10:49:51
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Re: Goof router for long line


[re: tsh] [link to this post]
 
Get a BT Business Hub - 2wire 2700HGV the version 5 or 6 rather than the much older V4. It has one of the best front ends (modem) around especially on long lines and can sync at 3dB SNR and will hold sync when the SNR then drops towards 0dB or even negative for a short while. You can pick up a brand new unopened one on ebay for £5 to £20 or even as low as £0.99 !

With BT residential service it should work straight off but with other ISPs there are a couple of small tweaks needed - if you get one we can point you to where the instructions are.





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


taurus excreta cerebrum vincit
Standard User tsh
(learned) Mon 27-Jun-11 11:28:37
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Re: Goof router for long line


[re: MHC] [link to this post]
 
Thanks, will give that a go.


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Standard User RobertoS
(sensei) Mon 27-Jun-11 11:46:08
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Re: Good router for long line


[re: tsh] [link to this post]
 
Goof?
Good On Operational Features, like adjusting noise margin?

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
Standard User tsh
(learned) Mon 27-Jun-11 12:19:49
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Re: Good router for long line


[re: RobertoS] [link to this post]
 
I blame my ipad...
Standard User gyre
(committed) Mon 27-Jun-11 16:18:11
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Re: Goof router for long line


[re: tsh] [link to this post]
 
billion bipac 7700n. mine holds on to a 66.5dB attenuation and i get a solid 2mbit/s.

target snr margin is adjustable.

48 quid ish from either broadbandbuyer or amazon uk.

-- gyre --

plusnet via Draytek Vigor 2920 and Billion BiPAC 7700N (bridged)
Standard User Apprentice
(knowledge is power) Mon 27-Jun-11 18:50:06
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Re: Goof router for long line


[re: tsh] [link to this post]
 
I'm using a Netgear DG834GT loaded with DGTeam firmware, can tweak the SNR value which helps on the longish line to achieve a higher sync speed and the connection stays up for days on end providing the IP profile is no greater than 3500kbps.
These are the current line stats:-

Channel: INTR, Upstream rate = 448 Kbps, Downstream rate = 4000 Kbps
Link Power State: L0
Mode:			G.DMT
Channel:		Interleave
Trellis:		ON
Line Status:		No Defect
Training Status:	Showtime
		Down		Up
SNR (dB):	7.4		17.0
Attn(dB):	61.5		30.0
Pwr(dBm):	19.3		12.0
Max(Kbps):	4352		892
Rate (Kbps):	4000		448


If the sync rate gets the IP profile up to 4000kbps or even greater then the connection can get unstable if it's used for more than just basic browsing and e-mails.

( I've got another one spare, it too came via eBay wink )

Alastair

omadasafisho
Standard User tsh
(learned) Mon 27-Jun-11 20:24:28
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Re: Goof router for long line


[re: Apprentice] [link to this post]
 
Better than i get with my current DG834GT (below), but the wifi on it seems to be on the blink (or my tablet is upsetting it) so I thought a change might be in order.

Status: ShowtimeRetrain Reason: 0
Channel: INTR, Upstream rate = 448 Kbps, Downstream rate = 1856 Kbps
Link Power State: L0
Mode: G.DMT
Channel: Interleave
Trellis: OFF
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.9 19.0
Attn(dB): 63.5 31.5
Pwr(dBm): 16.1 11.9
Max(Kbps): 2144 964
Rate (Kbps): 1856 448
Standard User tsh
(learned) Tue 28-Jun-11 21:19:49
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Re: Goof router for long line


[re: MHC] [link to this post]
 
Does the 2700HGV let me set the target snr? Its synced at 1800 with 9db margin, so not too bad, but I'd like to make it try harder.
Standard User gouledw
(newbie) Tue 28-Jun-11 22:06:35
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Re: Goof router for long line


[re: tsh] [link to this post]
 
No, but what you could do depending on who your ISP is, get the business hub, plug it in and ask them to set your Noise Margin to 6dB. The business hub will hold down to 1dB from what I've seen.
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