** Reply to message from "Lewis G Rosenthal"
<os2-wireless_users@2rosenthals.com> on Wed, 31 Jan 2007 14:21:39 -0500
Lew, I fought this exact problem with Qwest a year or so back: strong signal at
the box, marginal to no signal at the modem. The DSL modem I have has built-in
signal analysis and it would go from a downstream SNR of 2 up to 16-20 in a
matter of minutes. Upstream SNR was consistently in the 28-32 range. They
showed up and measured a DOWN/UP SNR of 18/30 at the service entry point so I
plugged in my modem with nothing else attached and got a barely usable 6/30
reading. AHA! Bad modem. Now, by a quirk in Qwest's shipping, I wound up with
3 of these modems so I swapped in a new one - 8/30. Swapped in the third one
and got 10/30, so I left it in. For the next two months, that modem ran with
anywhere from 6/25 to 12/30 SNR. One day, up popped a SNR of 18/30 and the
downstream attenuation remain above 15 ever after. Swapped to original "bad"
modem back in and what do you know - 17/30!
I pulled the logs for all this time and made a rather interesting discovery:
the bad signals exactly tracked the gateway machine I was assigned. I called a
friend at Qwest and he checked their records - they had swapped equipment on
that server for weak signal just after all my problems. Looks like the problem
was fairly far upstream from me after all.
> The Verizon service personnel just left. After several tests, it appears
> that the primary connection is functioning normally once again. However,
> there are some additional steps which I will be taking in the coming
> days to improve performance of both lines, though the signal loss from
> the Verizon termination at the house (the "demarc) is minimal. Verizon
> has closed this ticket.
>
> I will continue to monitor the behavior of the line for the next few
> days. In the meantime, and as per usual, please report to my email
> address any delays or broken connections which you may experience.
>
> Thanks again for everyone's patience. Hopefully, this matter is now in
> the past.
?????