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Nerdtalker
Working Hard, Or Hardly Working?
Premium,MVM
join:2003-02-18
Tucson, AZ
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| reply to pcscdma
Re: Heh..
said by pcscdma  :
said by Nerdtalker :
DOCSIS 2.0 is a viable solution, but its still too far off.
Comcast for one has only just begun upgrading to DOCSIS 1.1, and the majority of modems and linecards are still DOCSIS 1.x. My point still stands, they'd need to replace all of that, and what'd the only benefit be, so that the 5% of power users can P2P, host files/webpages, and use a webcam? From a business point of view, its simply not worth the time or money at this point.
Since when were 'power users' the only people who use webcams? The Moto SB5100 is DOCSIS 2.0
Since most of the non power users are just beginning to understand how to even connect the webcam...
You fail to understand why we aren't seeing DOCSIS 2.0 being phased in. Modems are available, but linecards and new CMTS equipment is costly.
Think about it from a business point of view, why would increasing upstream make your service more appealing to average Joe? He doesn't share files, run a webpage, or use a webcam, he only "surfs the net".
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Touch a thistle timidly, and it pricks you; grasp it boldly, and its spines crumble. -William S. Halsey | |
DrTCP
Yours truly
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join:1999-11-09
Round Rock, TX
| said by Nerdtalker :
You fail to understand why we aren't seeing DOCSIS 2.0 being phased in. Modems are available, but linecards and new CMTS equipment is costly.
First of all, most CMTS manufacturers now have DOCSIS 2.0 line card upgrades. ISP does not need to upgrade to DOCSIS 2.0 everywhere. Cisco is the dominant player in CMTS business and they started selling DOCSIS 2.0 CMTS last year.
Secondly, you only need to upgrade those systems where total upstream utilization at any one instant is likely to exceed 10Mbps (DOCSIS 1.0/1.1). But there are other solutions you can choose before DOCSIS 2.0 path. DOCSIS 1.0/1.1 systems can allocate multiple upstreams per one downstream channel (typically a CMTS card is 4up:1down). So, CMTS can loadbalance modems to one of the 4 upstream channels even though they all use the same downstream channel (beauty of DOCSIS scalable design).
If the modems are capped to T1 this is not going to cause any problems to the user.
The advantage of DOCSIS 2.0 is that it allows better upstream frequency usage (efficient use of spectrum) for the Cable ISP. It is not really a problem for the user. DOCSIS 2.0 and DOCSIS 1.1 use the same MAC code so the difference is basically on the physical layer. | |
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