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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: DS3 Coax..
Thus spake "Josh Richards" <[email protected]> > Before fiber and ADMs were so common, in the days of buried coax > for DS-3s (between COs and for the occassional large customer), > coax was obviously being used for inter-building connectivity. > > How exactly did the topology differ? Besides fiber, which eliminates > the issue of ground loops and such altogether, how did the RBOCs > actually deal with this problem when they didn't have fiber in the > ground? Look in the telco vault of any large building old enough to have POTS lines coming in on real copper -- there'll be huge fuse panels, one fuse for each line; same technology was used for T1 and T3 circuits as well, though probably with different fuses. I can't specify exactly what type of fuses or panels you would buy, as I've religiously avoided inter-building copper myself. Fiber good, copper bad. Move along :) S Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking
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