nunya
SEE ROCK CITY 475 MILES
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join:2000-12-23
O Fallon, MO
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 ·AT&T CallVantage
| reply to Mike19732
Re: Anyone Have 1.5 or better package in Ofallon,IL?
I'll throw in $.02 since I've worked in, and built, both types of networks.
Both have certain advantages and disadvantages that I will not touch on. We'll keep this to getting the end user to the internet.
The telephone network was designed for dedicated "star" topography (for the most part). From the central office (or RT) out, the customer has the full dedicated spectrum of that cable pair. The connection from the DSLAM (actually a router behind the DSLAM) to an internet POP is a shared bottleneck. But as of today, most DSL ISP's are only running at 60% capacity max on their backhaul.
The cable T.V. system was originally developed in a "cascade" type trunk-branch network since all of it's customers were getting the same regenerated signal. In order to provide other services, they have attempted to "starify" their network. They divide the system into fiber fed "nodes". From the node, you are sharing the network with all those around you. You are also sharing the coax with video BW. Most cable companies are no where near fully digital yet, so they are running both digital and analog broadcast BW. Most cable companies are running at about 80-100% backhaul and node capacity. That's the price you pay for having the majority of customers. They also have routing issues from inexperience. Telcos have been in the ISP business a lot longer.
Cable company data engineers are screaming for video engineers to hurry up and digitize to allocate more BW.
Cable basically has two physical bottlenecks to DSL's one.
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