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thecybernerd
Premium
join:2007-01-05
Great Falls, VA

What modem will they use?

I am curious what modem they will use to deliver these speeds? I know the SB6121 only supports channel bonding up to 160 mbps down and 120 up. Does comcast plan to duck tape two of these bad boys together or is there a newer model?

Thanks!


GoodOmens

join:2005-07-06
Arlington, VA

I'm guessing the wireless gateway will be one of their Arris modems that offer 8 channel downstream and 4 channel upstream bonding - more then enough for 300mbps.



SHoTTa35

@optonline.net
reply to thecybernerd

Any of the other 8x4 modems they already have or the 24x8 devices coming from Intel Puma6 thing or whatever? Current 8x4 modems can do 343/100Mbps max theoretical. Getting 300Mbps should be more than possible in production then.



anon6123

@mich.net
reply to GoodOmens

I would guess they are pulling out bigger guns than that for this...

»Arris Tests 800 Mbps Cable Modem

South Korea was testing that modem a year and a half ago, so I would guess that Comcast most likely has at least one of them in a lab somewhere...

16 channels would be 608mbps or so, allowing several of the channels to have some congestion on them.



whfsdude
Premium
join:2003-04-05
Washington, DC

said by anon6123 :

16 channels would be 608mbps or so, allowing several of the channels to have some congestion on them.

Doesn't fix the upstream problem they are going to run into.


anon6123

@mich.net
reply to SHoTTa35

That was another modem I was trying to remember. They might be able to turn on 24 downstream channels, but I don't know if they actually have 8 upstream channels to even connect to currently. Certainly not 64 QAM carriers as you would need 48mhz worth of bandwidth.


etaadmin

join:2002-01-17
Dallas, TX
kudos:1

1 recommendation

reply to whfsdude

said by whfsdude:

said by anon6123 :

16 channels would be 608mbps or so, allowing several of the channels to have some congestion on them.

Doesn't fix the upstream problem they are going to run into.

Docsis3.x load balancing takes good care of that 'problem'


anon6123

@mich.net
reply to whfsdude

Yea I commented on that a couple of posts above this one... If they are rolling out a 65mbps upload, I'm guessing they are also working on a few solutions to work on that issue. The one thing in their favor is I wonder how much upstream is actually used at a given time. They might be able to oversubscribe upstream at a higher rate than downstream given it's more likely for someone to be using netflix than constantly uploading videos to youtube.


Chubbysumo

join:2009-12-01
Superior, WI
Reviews:
·Charter
reply to thecybernerd

A moto 6141 has 8 down and 4 up channels. So does some arris modems and a few others. Just gotta look. I have a 6121, because I dont see charter using anything more than 100mbps as a download tier in any of their markets anytime soon. Also, charters upload is the worst.