Ken, DLC stands for digital line carrier, alternately digital loop carrier, sometimes concentrator.
'DLC' usually would connote an older technology in this day and age. When attempting to portray a next generation platform, the DLC would reside on the "before" side of the page.
It is used, essentially, to effect "pair gains" [in denominations of 64 kb/s DS0s, in the main], from copper or fiber loops and trunks.
Like remote channel banks, they employ TDM multiplexing techniques to subscribers who reside outside the normal copper reaches of the central office's immediate serving area, or to heavy usage locations, even those which are nearby, which are congested and require "pair relief."
What Mr. Fun was saying, I believe, was that this is not a very flattering prop to be using during a presentation for next generation delivery platforms. Correct me, Fun, if that wasn't your intent.
To the other part of your question, CSCO should get credit for recognizing and being among the pioneers of the next generation services revolution, which is poised to, at some point, partially supplant, and partially evolve, the status quo of the public switched telephone network as we now know it.
Without absolute clairvoyance, this can be a very risky business, [given advances on other fronts that are taking place at the same time] with potentially very high yields, down the road. |
