Topic 'Re: Connection going from normal to very slow every 2-3 days' in forum 'Comcast HSI' - dslreports.com http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27568346 en Wed, 22 May 2013 13:06:37 EDT Wed, 22 May 2013 13:06:37 EDT Re: Connection going from normal to very slow every 2-3 days http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27580607 --
»Music2pc-This program is AMAZING!]]> http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27580607 Tue, 02 Oct 2012 01:24:47 EDT Re: Connection going from normal to very slow every 2-3 days http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27571501 so assuming your modem is exactly right about the level(it's not a precision meter, but a "close enough" sort of reading) depending on exact when you took the reading, it could actually be down at -12 or so part of the time, throw in changing temps/seasonal manual adjustments, and you could have such a low signal that your modem is constantly saying "sorry, I didn't hear that, please say again" continual resends could explain the bad performance days.
It is borderline enough to make it worth calling in for a tech and fixing/adjusting it before you totally lose contact.]]> http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27571501 Fri, 28 Sep 2012 16:58:16 EDT Re: Connection going from normal to very slow every 2-3 days http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27568705 said by PhReE5:

SNR is way more important than the power level itself. With a 35db level it seems ok.

Keep some logs of the exact times it is fast/slow. See if there are any correlations (like slow in evenings/etc). Also have a look at signal levels when it is slow.

It stays slow for 2-3 days straight and then goes to normal for 2-3 days straight. All day and night. The signal levels I already posted are from right now which is slow.
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»Music2pc-This program is AMAZING!]]> http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27568705 Thu, 27 Sep 2012 21:03:58 EDT Re: Connection going from normal to very slow every 2-3 days http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27568610
Keep some logs of the exact times it is fast/slow. See if there are any correlations (like slow in evenings/etc). Also have a look at signal levels when it is slow.]]> http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27568610 Thu, 27 Sep 2012 20:29:54 EDT Re: Connection going from normal to very slow every 2-3 days http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27568473 said by tshirt:

downstream power is pretty low, COULD be a potential problem, depending which way it swings. SNR looks ok for such low power. Upstream looks ok.

Well, now it's -8 and it does say
For all modems: -10 dBmV to +10 dBmV "Recommended".

The main thing I don't get is why is my speed going from normal for 2 or 3 days to super slow for 2 or 3 days, back and forth like that?
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»Music2pc-This program is AMAZING!]]> http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27568473 Thu, 27 Sep 2012 19:38:36 EDT Re: Connection going from normal to very slow every 2-3 days http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27568403 http://www.dslreports.com/forum/Re-Connection-going-from-normal-to-very-slow-every-23-days-27568403 Thu, 27 Sep 2012 19:22:35 EDT Connection going from normal to very slow every 2-3 days http://www.dslreports.com/forum/Connection-going-from-normal-to-very-slow-every-23-days-27568346
Here is what my modem currently shows:

It's the Arris TM402P

Downstream
Freq/Power: 705.000 MHz -9 dBmV
Signal to Noise Ratio: 35 dB
Modulation: QAM256
Upstream
Freq/Power: 29.000 MHz 46 dBmV
Channel Type: DOCSIS 2.0 (ATDMA)
Symbol Rate: 5120 kSym/sec
Modulation: QAM64
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»Music2pc-This program is AMAZING!]]> http://www.dslreports.com/forum/Connection-going-from-normal-to-very-slow-every-23-days-27568346 Thu, 27 Sep 2012 19:05:44 EDT