FYI, this may be something that Comcast doesn't do, but we (Cablevision) actually segregate the bandwidth used for the VoIP services completely from that of the internet connection, and it was my understanding that that is standard practice within the industry. Forex, our service flows have individual listings for carrier signal and for the actual phone conversation, in addition to the rate shaping being done for the net connection.
As far as the NAT/Firewall aspects of the Motorola goes, to my knowledge, Comcast never uses them. At least, they didn't when I lived in their territory. It's an available option in the modems, but 99% of the time cable companies don't want to use them, preferring 1 PC to 1 Modem connection. We're actually implementing a static IP service in the next couple of months, something that the Motorola can also handle, and our solution involves a Cisco router instead. Also, if your co-worker is getting drop-outs on calls, he probably has other issues. I've held an hour-long conversation with no hiccups before while downloading at 28 Mbit/sec the entire time. George Metz Ken Gentle wrote: > Thanks, Charles. Comcast Tech support said I could keep my current > Surfboard for data and use theirs for the voice. I thought that was > redundant, but I see your point. One of my co-workers has voice and > data on the same modem and he'll occasionally drop out on our phone > conversations - it is really annoying. > > Just what I need - another electronic device to plug in... ;-) > > As usual, you've been a big help, Charles. Sounds like separate > modems for voice/data is the way to go. > > Ken > > At 16:45 2007-04-16, Charles Steinkuehler wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Ken Gentle wrote: >>> I'm trying to figure out if adding Comcast's Digital Voice service, >>> which requires me to lease an eMTA modem from them, is going to cause >>> me any problems with my current network setup. >>> >>> Comcast will supply either an Arris Touchstone or Motorola >>> Surfboard/Voice modem, with battery backup. My research on the >>> Motorola finds that there is a firewall and NAT on the modem (which I >>> don't want). I can't find anything similar about the Arris Touchstone. >>> >>> Does anyone have any experience with either of these modems and >> Bering uClibc? >> >> I have two Arris Touchstone modems for digital voice on Cox cable-modem >> service (one for business phone, one for residential), but neither is >> hooked to my firewall (which is hooked to a third modem). >> >> When I setup my business-class network service with digital voice, the >> Cox folks brought me a new Arris modem for voice, but told me to keep >> the existing cable modem for data. I was told there can be issues with >> traffic prioritization within a single modem if it's running both data >> and voice (ie: if your local computer starts spewing garbage full-speed >> out to the 'net, your phone might stop working). I'm not sure how >> seriously to take this, but that's what the installer said. >> >> You might ask and see if you can just keep your existing modem for data >> when they install your new voice service. If you're nice to the >> installer, (s)he'll probably even provide the required splitter and coax >> patch cables. If you're *REALLY* nice, you might be able to get them to >> put their demark on your backboard in the wiring closet, instead of >> hanging off the side of your house somewhere. :) >> >> - -- >> Charles Steinkuehler >> [EMAIL PROTECTED] >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG v1.4.0 (MingW32) >> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org >> >> iD8DBQFGI+B5LywbqEHdNFwRAgo0AJwPbRzE6QjZah8aCXrw7y4+KMf9AACg9u41 >> VKR3Lb+2REOQ9KFncxPbd+4= >> =RpM7 >> -----END PGP SIGNATURE----- >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by DB2 Express >> Download DB2 Express C - the FREE version of DB2 express and take >> control of your XML. No limits. Just data. Click to get it now. >> http://sourceforge.net/powerbar/db2/ >> ------------------------------------------------------------------------ >> leaf-user mailing list: leaf-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/leaf-user >> Support Request -- http://leaf-project.org/ > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > ------------------------------------------------------------------------ > leaf-user mailing list: leaf-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/leaf-user > Support Request -- http://leaf-project.org/ > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ------------------------------------------------------------------------ leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user Support Request -- http://leaf-project.org/
