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Cascading Style Sheets (CSS) - Ryan wrote in messagenews:telecom22.632.10@telecom-digest.org: A quick question for the telecom pros. I'm wanting to do my own DSL between two buildings in the same city and I need a little help. I've acquired a couple of Telmax SDSL modems and I know that I'll need a dry pair (or "alarm circuit") from the local telco to do it. What I don't know is if there is anything else I need to make sure of when ordering the circuit. You have to understand that I know almost nothing about telecom equipment. I got the whole idea from a Bob Cringely article. So I'm wondering if I need to ask that the line be set up in a particular way. Are there any questions I should ask about "coils" or "conditioning" or anything else? Or is simply ordering an "alarm circuit" enough?Cringely's pulpit has a direct, high speed line to thecenter-for-useless-information-about-theoretical-possibilities-that-sound-good-but-never-work. I'm sorry to say that you'd do best to tryand get your money back: Cringely just has to *write* about doingthis, but you are now on the sharp edge of trying to actually *DO*it. Cringely should have cautioned his readers to get the pair beforespending more money, but even he admits that it's hard to do and thatthe circuits aren't offered in many places. True to form, however, hequickly wanders back to neverland:"All this dry pair stuff means that anyone who already has dry pairs-- LOTS of dry pairs -- suddenly has an asset they never knew hadvalue. Quick like a bunny, buy-up that stodgy old burglar alarmcompany that's been limping along in your town for 50 years. They havea dry pair (often more than one) going to every building. Switch thedry pairs to digital, make the alarm service digital, too, then usethe old alarm panel and all that excess bandwidth to offer both wiredand wireless Internet access to the whole town. With the lowestcircuit cost and more circuits than a regular ISP could ever afford,you'll soon be a broadband tycoon. "Real "Alarm" circuits have been using data transponders andcentral-office audio bridges for years: it's a lot cheaper, moreaccurate, gives the alarm companies better control, and is a LOTharder to bypass. Forget about dry pair "alarm" circuits: even ifthey're still tariffed, they are always offered for data rates lessthan 30 baud, and you don't get to complain if there are coils in theline, bridge taps, or multiple gauges. Unless you're in possesion of aMorse Code Sounder and key, or some equivalent piece of antiquetelegraph equipment, they're useless for what you want.As *regulated* monopolies, the telcos have a unique advantage overother companies: they get to specify the things you can use theirpairs for. We could debate endlessly about whether this is "right",but it's a fact. Run data over a dry pair (even if by some miracle onewas available) and the telco would be entitled to rip it out.However, for the sake of argument, assume they don't care. Here's therub: they're also entitled to change the layout of your line at anytime they want - for example, if you have the only pair that'squalified for S/A/IDSL, and Covad wants it, they get to take it awayfrom you and switch you to a mixed guage, multi-bridge-tap, 24B44loaded pair which will top out at about the speed of a Model 33Teletype. In other words, not only are we talking about spending anenormous amount of time *getting* a dry pair, it would be nearlyimpossible to * keep * it once you'd invested all that money in modemsthat could be rendered useless by the first "box change" of yourcircuit.These old McCulloch (Gamewell) loops over dry-pairs are now used onlyby municipalities with the wherewithal to run their own wires,sovereign access to the needed rights-of-way, and large investments intelegraph equipment that justifies doing so. Just look up the nexttime you see a Fire Alarm box: it's probably connected to a separatewire loop run above the cable TV and below the electric lines. On theoff chance that your local telco still offers the service in yourstate, ev
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