Comcast Triple Play and Router?

Comcast Triple Play and Router?
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Subject Author Date
Comcast Triple Play and Router? Edward 06-30-2007
Posted by Eric on July 1, 2007, 12:43 pm
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On Jul 1, 7:15 am, Andrew Rossmann
> [This followup was posted to comp.dcom.modems.cable and a copy was sent
> to the cited author.]
>
> Edward.Nuxt...@gmail.com says...
>
> > 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?
>
> 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.
>
> --
> If there is a no_junk in my address, please REMOVE it before replying!
> All junk mail senders will be prosecuted to the fullest extent of the
> law!!http://home.att.net/~andyross

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.


Pure Networks
Posted by John Gray on July 1, 2007, 4:28 pm
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> [This followup was posted to comp.dcom.modems.cable and a copy was sent
> to the cited author.]
>
> Edward.Nuxters@gmail.com says...
>> 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?
>
> 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.
>

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.

Posted by $Bill on July 1, 2007, 9:11 pm
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John Gray wrote:
>
> 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>

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.


Posted by John Gray on July 1, 2007, 9:42 pm
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> John Gray wrote:
>>
>> 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>
>
> 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.
>
>

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.

Posted by $Bill on July 1, 2007, 11:05 pm
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John Gray wrote:
>
> 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.

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.



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