[colug-432] talking to your ISP

[Rod]

The multiple downsteam channels is due to the Arris modem being a
DOCSIS3 modem. If memory serves the 5100 is not.

--
Rod Barnhart


On Mon, Dec 31, 2012 at 11:16 AM, Angelo McComis <angelo at mccomis.com> wrote:
> My story has a few paths and twists and turns on it here...
>
> I'm on TWC, and would routinely get 23-25mbit downstream as long as I
> chose a relatively decent Speedtest provider, with just under 1mbit
> upstream. Same even when using the RR speedtest too. This was on a
> Motorola Surfboard 5100 series cable modem.
>
> When I switched my service to include phone service I changed nothing
> else on my account - they only needed to re-provision the internet
> service to see my new CPE ID  (and add phone).
>
> The new Combo MTA/Cable Modem (and now, built in router with WiFi), is
> an Arris TG862G.
>
> With the new device, I get no more than 14-15 mbit downstream, and
> still the same upstream speeds.
>
> Looking at the tech readouts on the router info page, I notice I now
> have 4 downstream channels on 4 different frequencies:
>
> 651 MHz - Power of 4.96 dBmV - S/N of 37.94dB
> 645 MHz - Power of 4.71 dBmV - S/N of 37.94dB
> 639 MHz - Power of 4.54 dBmV - S/N of 37.36dB
> 657 MHz - Power of 5.25 dBmV - S/N of 37.94dB
>
> upstream is just one channel:
>
> 32.10 MHz - Power of 30.71 dBmV and it says Mixed TDMA/ATDMA for
> Channel type, and there is no S/N/R on the upstream.
>
>
> It's curious that this is split into 4 downstream channels, yet the
> performance is substandard to the Motorola.
>
> Unless, of course, someone or something at TWC reset my download speed
> when they re-provisioned the new equipment.
>
> Now - a couple days/weeks ago, I get an email saying they have bumped
> me up, and to please restart my modem/router to take effect.  I did
> that with zero change to my download speeds.
>
> Is anyone else seeing multiple download channels, and is there any
> other logical explanation for my loss of 10mbit/sec speed here?
>
> -Angelo
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