iansltx
join:2007-02-19
Golden, CO
kudos:2 Reviews:
 ·Comcast
| reply to Bill Dollar
Re: *raises hand timidly* How would leasing a single channel for DOCSIS work? Aside from the fact that you usually only have one or two available channels for return path in a cable system, where would the demarc be between the cable-CLEC and the MSO?
FWIW, the closest thing to this is what TWC does with Earthlink and (in some places) LocalNet. TWC apparently hands off from their backbone to Earthlink/LocalNet's at a POP, and they handle the ISP side of things, similar to how Qwest does alternate-ISP arrangements.
Line sharing is a lot easier with point-to-point connections (DSL or active fiber) than with shared connections (cable or GPON). As much as I like the idea of RCN coming in, buying 18MHz of downstream spectrum and 4MHz of upstream spectrum from Comcast and putting 60/6 broadband on it for $100, it's just too hard to do. |
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| Good question, and I'm the wrong dude to answer it. I can however point you to a now-defunct company called Internet Ventures, Inc. and its subsidiary, Internet On-Ramp, Inc, who filed a petition with the FCC to do this exact thing in June of 1999, which was denied a year latter, but not on technical grounds. They had a plan, and if I recall correctly, there is a white paper by a tech consulting firm floating around that describes how line sharing on D1/D2 would work. |
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iansltx
join:2007-02-19
Golden, CO
kudos:2 Reviews:
·Comcast
| If you'll find that whitepaper I'll definitely read it. Sounds quite interesting, though with today's FTTN infrastructure, relatively small node sizes and such it would be a much more expensive proposition in all likelihood than, say, DSL/CO line sharing. |
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