Quote:
Originally Posted by digitalspace
Downstream / nodes / etc, they're all terms I understand but not in the context that Broadbandings is providing.
A nice simple diagram showing actual cables used between distribution / conversion points would be awesome. Take this for example, if the green cab is a simple RF amplifier and nothing intelligent, and all the fancy stuff lies in the UBR in some building somewhere, then why is it seemingly so difficult to upgrade an analogue cabled area to a digital service? Surely all it takes is to pull the fibre cable from analogue UBR and plug it in to a digital one?  |
Quote:
Originally Posted by Broadbandings
Rather than using additional fibre to produce new nodal areas one can also use WDM / wave division multiplexing and digitise the analogue signals at for transport down the WDM'd fibre and decode back to analogue when they reach their destination for delivery to CPE or CMTS depending if downstream or upstream.....
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You made me re-read Broadbandings' helpful update to the NTLWorld diagram and I came up with the above quote.
What's this about "analogue" in the broadband transport chain? Where is it analogue? Which equipments are analogue devices?