Comcast Triple Play and Router?

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My brother is going to get the Comcast triple play, phone internet and
TV.
My questions is, does he have to use THEIR cable modem, or can I get
him one of those Linksys cable modem/router combos?
Can I use a router if there is going to be a special Comcast cable
modem?


Re: Comcast Triple Play and Router?


Edward wrote:
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You need a modem that supports VOIP and I would keep the modem separate from
the router (you'll thank me later).

So get an Comcast approved VOIP modem (or rent theirs [unless it's free]) and
buy a spearate wireless G router with integrated 4-port switch to handle your
PCs.

The TVs are handled by splitting the BB cable (usually at home entry point) and
the modem will be on the first leg of the splitter and handle your other
needs.


Re: Comcast Triple Play and Router?


wrote:

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Router technology is about ot go to 'N', we are currently at 'G'. 'N'
reaches out and can touch your neighbors or backyard easily and is
also faster. It is currently called "pre N" because the standard has
not been written and accepted by all the companies involved yet. When
it does come out, your modem/router combo will be outdated and you
will be stuck buying a new setup. Buy them seperate!

Re: Comcast Triple Play and Router?


[This followup was posted to comp.dcom.modems.cable and a copy was sent
to the cited author.]

Edward.Nuxters@gmail.com says...
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I'm not entirely certain how their digital phone service works, but I
believe it uses a separate connection that is then tied into your home's
phone lines. It is not traditional VOIP like Vonage, but something
unique that is specifcially designed for cable. Your TV and Internet,
along with the phone adapter, just split the incoming cable. In other
words, the Internet is only for your computers and you can treat it as
normal.

The main potential issue could be a weak cable signal due to the 3-way
split you may end up with.

--
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Re: Comcast Triple Play and Router?


Andrew Rossmann wrote:
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I think they use an adapter to the existing cable modem, so I'm probably
wrong about needing a VOIP modem.  They do use VOIP over a private network
I believe, but the adapter allows them to connect up to a regular cable
modem.  I think they have plans for a combined modem/adapter.

I'd try to go with a standard Motorola mode and Linksys/Netgear G router
until N is solid.  Then you should only have to connect their adapter to
the modem to add phone service - TTBOMK.

Re: Comcast Triple Play and Router?


On Jul 1, 7:15 am, Andrew Rossmann
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Digital phone uses a modem with an integrated voice port. The only
ones I've seen Comcast use are from Arris:

http://www.arrisi.com/product_catalog/listers/index.asp?id=385

However, there are also units from Motorola and Scientific Atlanta
that should work about the same, so they may be used as well.

I don't know if they are available retail or not. I doubt it, but who
knows. The big difference with these is that there is an 8 hour
battery backup for the voice circuits. It looks proprietary, so I'm
guessing it will cost big bucks to replace in a few years.


Re: Comcast Triple Play and Router?



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I do know that TW uses VOIP modems.  There are two phone plugs to support
two phone numbers.  However, at this time, TW Digitalphone only allows one
phone number.  The modem has two IP, one for the internet and one for the
phone.  My router is after the modem(of course) and using the phone has no
effect on RoadRunner's speed.  I would think that Comcast's setup would be
similar.

The $3 that I could have saved in buying a VOIP cable modem would have been
completely blown away when the phone started dropping the outbound voice
signal after about 10 months or so.  Internet service was unaffected, and
the problem was the cable modem.  If it was my modem, I would have had to
buy another and also pay for a service call first to verify that.  I'm
renting as long as the option exists.<G>

--
                                          John Gray

If you don't have a reason, at least have an excuse.

Re: Comcast Triple Play and Router?


John Gray wrote:
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It's safer/cheaper if it's only $3.  You both make out since they buy
reconditioned
modems for next to nothing and you don't have to worry about the hassles of
trying to prove it's not your modem.


Re: Comcast Triple Play and Router?



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I've had four modems from RoadRunner.  The first was brand new and had all
the documentation in the shrink-wrapped retail box when they brought it
out. The second one was a used Toshiba which the tech visiting next door
was needed when I asked if RR was raising their cap on our bandwidth.  He
took it out of his truck and made the call-in for me right then even though
it wasn't scheduled.

The last two were brand new in-the-box Motorola SBV5220 Surfboard VOIP
cable modems.  I'm not saying that they don't recycle modems, but I've had
3 out of 4 new modems.  This Motorola modem by far has the best features of
the lot, although I had no problems with the USR Sharkfin(ugly that it was)
or the Toshiba(I did miss it not having a web interface.

At the sheer volumes that the cable companies buy modems, they have to be
getting a huge discount regardless of new or rebuilt.

--
                                          John Gray

If you don't have a reason, at least have an excuse.

Re: Comcast Triple Play and Router?


John Gray wrote:
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Could be because they're VOIP.  There are a lot more reconditioned standard
modems than VOIP out there.  When we had Adelphia, I went in to swap out mine
and they were all reconditioned RCA and Terayons - I took the Terayon since
my previous one was also Terayon and I knew they had a decent status page
and such and some of those RCAs had the loose power connection problem and
not great reviews.  They probably get the cost back in 3 months of rental
tops.



Re: Comcast Triple Play and Router?



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VOIP was likely the cause, I can see that.  On the first USR Sharkfin, it
was probably new due to the fact that TimeWarner had taken over the local
cable company about two years earlier and had to update the entire cable
system in order to offer first digital tv and then RR.  I hooked up to RR
within a month of it becoming available here.  On the web interface of the
Sharkfin, it was quite easy to see the cap set on the modem for both
upstream and downstream.  If I were technical enough, perhaps there is a
way to interpret the connection information on the current Motorola modem's  
local web page.

The tests the tech ran when she was here to change out the first VOIP modem
indicated that the cap was 5Mb up/ 512Kb down.  We weren't on 7Mb yet
although some RR locales have.  This was in February, IIRC.




--
                                          John Gray

If you don't have a reason, at least have an excuse.

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