<p dir="ltr">From my experience and after reading various posts on the comcast forum, you can actually use your own modem with a comcast static IP, but it still have to be an smc model on their approved list. A tech once mentioned that those models support radius. A different model _might_ give you more bridging options, where you can disable dhcp and Nat and enable DMZ. You'll never be able to do a l2 or l3 VPN; afaik that mode only forwards TCP and UDP, so no GRE. Openvpn, maybe. </p>
<p dir="ltr">But it's always a hate or miss situation since they'll download new firmware to your modem and you have to reach someone who is not reading from a script and also is willing to do this.</p>
<p dir="ltr">Justin</p>
<div class="gmail_quote">On Nov 12, 2015 11:46 AM, "Horkan Smith" <<a href="mailto:ale@horkan.net">ale@horkan.net</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">My understanding:<br>
<br>
If you need static IPs, yes, you need their modem.<br>
<br>
If you don't need static IPs, no, you don't need their modem.<br>
<br>
later!<br>
horkan<br>
<br>
On Thu, Nov 12, 2015 at 11:33:29AM -0500, Chris Fowler wrote:<br>
> How committed am I to their cable modem? I'm working through issues at our office and their modem provides NO features for me. It is a SMC model with no logging. I simply can only see the current status. No static routes, etc.<br>
><br>
> Can I buy my own modem for their business service?<br>
><br>
> > From: "Alex Carver" <<a href="mailto:agcarver%2Bale@acarver.net">agcarver+ale@acarver.net</a>><br>
> > To: <a href="mailto:ale@ale.org">ale@ale.org</a><br>
> > Sent: Wednesday, November 11, 2015 6:32:53 PM<br>
> > Subject: Re: [ale] Serious: Comcast Business vs Residential<br>
><br>
> > On 2015-11-11 15:27, Chris Fowler wrote:<br>
> >> I do not think their business service is VoIP. At our office we have 4 phones.<br>
> >> They all go back to a box that connects to their cable service. I have a<br>
> > > working fax machine on a line and I am sure I've used a modem there on a line.<br>
><br>
> > That box is an ATA to provide you an analog line on one side that<br>
> > connects to their VoIP system on the other side. You can do fax over<br>
> > VoIP with an ATA.<br>
><br>
> > _______________________________________________<br>
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> > See JOBS, ANNOUNCE and SCHOOLS lists at<br>
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<br>
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<br>
<br>
--<br>
Horkan Smith<br>
<a href="tel:678-777-3263" value="+16787773263">678-777-3263</a> cell, <a href="mailto:ale@horkan.net">ale@horkan.net</a><br>
_______________________________________________<br>
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</blockquote></div>