[SGVLUG] ATT DSL Gateway choices, which gateway do you like?

Dan Buthusiem dan.buthusiem at gmail.com
Sun Aug 12 15:50:59 PDT 2012


Your line's too noisy for 3 Meg. 7 dB snr is low. You'll end up losing sync
intermittently. The downstream attentuation isn't exactly terrible, but
you're pushing it. Might get better results from downgrading to 1.5M, but
you'll have troubke with things like Netflix. See if you're in Uverse turf.
I know people who've magically been able to have new lines run to get their
connection improved. The only other suggestion would be to switch to coax,
since coax providers will usually (sloppily) run you a new line straight
into your home. If you really want to stick with DSL, connect the modem
directly into the customer side of your NID / demarc (the physical cutoff
between your home wiring and AT&T's network), then measure your line levels
again after you get sync. If your downstream SNR improves above 10, then
your insid lines might be the problem. There's a chance it's filtering,
since a bad filter causes interference with your downstream, but I don't
see that being likely with such a high attenuation. Unplug all of your
phones and see if your SNR improves. Also, make sure the filters are on
your phones, and *not* your modem. I don't really see you getting much of
an improvement with a new modem, with the exception of an old Alcatel Speed
Touch Home. Those things are ancient, but one of the best modems ever made.
On Aug 12, 2012 3:36 PM, "matti" <mathew_2000 at yahoo.com> wrote:

> Thanks Dan, how does this look to you?
>
>
> DSL Line (Wire Pair):Line 1 (inner pair)Protocol:G.DMT Annex ADownstream
> Rate:3008 kbpsUpstream Rate:512 kbpsChannel:InterleavedCurrent Noise
> Margin:7.0 dB (Downstream) 16.0 dB (Upstream)Current Attenuation:50.1 dB
> (Downstream) 31.0 dB (Upstream)Current Output Power:18.5 dBm
> (Downstream) 7.1 dBm (Upstream)DSLAM Vendor Information:Country: {0xB5}
> Vendor: {BDCM} Specific: {0x4D54}PVC Info:0/35
>   ------------------------------
> *From:* Dan Buthusiem <dan.buthusiem at gmail.com>
> *To:* SGVLUG Discussion List. <sgvlug at sgvlug.net>
> *Sent:* Sunday, August 12, 2012 10:08 PM
> *Subject:* Re: [SGVLUG] ATT DSL Gateway choices, which gateway do you
> like?
>
> I have a spare 2701 if you want it. I might be able to dig up a Netgear
> DG... Something. Did you ever get your line levels? Could you post your
> attenuation and noise / SNR? DSL is a bit of a specialty of mine.
>
>
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