Cable Operator List

Colton Conor colton.conor at gmail.com
Tue Feb 2 20:31:37 UTC 2016


Is a remote MAC+PHY the same thing as a Distributed Converged Cable Access
Platform (D-CCAP) solution like Huawei is pushing? Is DOCSIS 3.1 even out,
or am I looking for something that does not exist yet?

Are these remote MAC+PHY devices in the under 10K price range that these
smaller all in one CMTS platforms are?

On Tue, Feb 2, 2016 at 12:49 PM, Scott Helms <khelms at zcorum.com> wrote:

>
>
>
>
> On Tue, Feb 2, 2016 at 1:24 PM, Colton Conor <colton.conor at gmail.com>
> wrote:
>
>> Yes, we are in the USA. So based on everyones recommendations, I am going
>> to stay far away from EURODOCSIS. I was told be a vendor that Arris and
>> other USA FCC certified cable modems could easily be flashed to EURODOCIS
>> mode, so I did not think the CPE side was that big of a deal (is that even
>> true). I was not aware that there were so many differences besides just the
>> channel width.
>>
>
> I wish this were the case, it would make my life easier.  The problem is
> that there is a diplex filter that prevents the upstream burst from being
> heard by the downstream receiver and for cost purposes all the D3 and
> earlier modems have fixed filters.  What that means is that a EuroDOCSIS
> modem can (sometimes) be flashed to use 6MHz channels, but the reverse is
> NOT true.  In any case we don't recommend using Euro modems that are
> flashed to US standards in production (nor do the vendors) because you'll
> see much more upstream leakage.
>
>
>>
>> So, assuming we are talking about DOCSIS only (and not EURODOCSIS), what
>> do you recommend? I like the idea of being able to upgrade to 3.1, but not
>> sure if there are any small systems capable of this? By small I mean
>> something that could feed less than 100 units, and be economical to do.
>> Cable has the advantage of cheap modems, so it's really the CMTS side.
>>
>
> In that case I'd definitely go with a remote MAC+PHY.  That's the only way
> you're going to get a good price point and decent performance unless you
> want to use the secondary market, which actually isn't a bad idea right
> now.  A used 7225 with 8x8 blades is pretty cheap, but it's centralized
> CMTS that would cover ~3k subs.
>
>>
>> Please remember I am only interested in data internet services over this
>> plant. Something that works for garden style layouts where I can bring
>> fiber or coaxial to the side of a garden townhome that has between 4 to 16
>> units inside of it. The reason I requested a harden outdoor unit is that
>> most all of the garden style properties have both the phone
>> and coaxial drops on the outside of the building. There is no central
>> closet or room. Plus we are in the south, so hardened for the
>> heat exposure makes sense.
>>
>> A remote MAC-PHY (or pre remote MAC-PHY, ala mini CMTS) sounds like what
>> I want. I will check into Huawei and Gainspeed. Who else makes these?
>>
>
> In no particular order, Arris is or will be, Teleste (Euro vendor trying
> to break into the US),  Sumavision, Altera, and ton more I can't remember.
> Come to one of the SCTE shows (it's in Philadelphia this year) if you want
> to be deluged with them :)
>
>>
>>
>>
>>
>>
>> On Tue, Feb 2, 2016 at 11:24 AM, Scott Helms <khelms at zcorum.com> wrote:
>>
>>> Nick,
>>>
>>> Absolutely, if your plant is in Europe or one of the other areas (lots
>>> of Africa and the middle East is like that) that adopted EuroDOCSIS I'd
>>> agree wholeheartedly.  I didn't see Colton say where they're located, but
>>> all North America is the US flavor so that's what I assume on NANOG.
>>>
>>> That being said, the best thing that seldom gets mentioned about D3.1 is
>>> getting us to unified channelization.
>>> Scott Helms wrote:
>>> > That very small upside for an extreme downside.Trying to hire someone
>>> > to work on your system with Euro channelization, not to mention buying
>>> > amplifiers and passives is a huge PITA.
>>>
>>> ... if your plant is in the US.
>>>
>>> > I have customers in Europe who
>>> > decided to do US DOCSIS and they universally wish they had used the
>>> > local "flavor".
>>>
>>> as you say, eurodocsis works well in europe.
>>>
>>> 3.1 will be a major improvement when it materialises.
>>>
>>> Nick
>>>
>>
>>
>


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