Ray, re the AOL TWX deal, see my post on the LMT.
Message 12529770
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Re lifeline powering for 911 service, you say:
"Locally, I have had an interesting seat mate on a recent flight,a chap who is working out the details for the Lifeline (911) portion of the Bend Cable initiative to provision telephony thru our HFC plant. The plan is to hot up the system from the head end with a 90VAC feed wire to a converter at the nodes, stepping to -48vdc there. Due date is early 2001. Very Kubrickian."
Ah, more abuse at the hands of the coaxialists.
No, not Kubrickian, but cupric-ian. Cupric, as in copper-ish, that is.
When will these folks come to realize that they can do it all with fiber? Think I'm kidding? Let's think about it.
Think about using a part of the optical spectrum over low loss fiber for the purpose of delivering a supply of low amounts of optical energy.
Think opto-electric conversion using photo-voltaic cells.
Think voltage doubling through multipliers stepping up these low voltages at the station up to nine volts, instead of halving and dividing higher voltages out of headends down to -48 at the field node.
Think about battery trickle-charging to the levels of critical need, during idle times and periods of normal use when telephones would be powered by the user instead of the line. Think about it.
Regards, Frank |
