Domain: adc.com
Stories and comments across the archive that link to adc.com.
Comments · 6
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Re:Plastic Rain Gutters
You mean fiber management tray: http://www.adc.com/Americas/en_US/Product/1270708869522/1270708888502
It's actually a little more involved than that, but basically that's the stuff we use for moving fiber jumpers in our buildings. The vertical runs are even called downspouts.
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read about it here (pdf)
You can read how they wire tunnels for cell phones here:
PDF file warning!
http://www.adc.com/Library/Literature/100557.pdf?r efer=promotion&c=digivance -
Re:Here too
Hey macdaddy, we are also the telco for our area and right now we run AFC/Copper Mountain equipment for the DSLAMs. I agree, they are pricey, but Copper Mountain is mad cheap compared to AFC. We are also a cooperative company, so we will probably just supply the subscriber units free of charge to our customers instead of making them pay a huge fee up front. We thought about doing 802.11b/g for the hotspot idea (which we probably will do), but we are looking at a fixed-wireless system that will do several miles for the rest of the coverage. The hotspot will probably be supplied by ADCs Loopstar system, which you should definately check out. Right now Motorola's Canopy has our attention because of the way they package their service. You do not need to pay for service contracts, their startup costs are not too high, the antennas they use are TINY compared to other products that I have looked at thus far, the range/bandwidth is pretty decent (which will be doubled in the spring) for what we need and the dealers we have been speaking with have awesome customer service. So far they are definately in the lead. Other companies I have been comparing are WaveRider, Airspan and a few others. I am going through the comments on this forum because I have heard some recommendations for companies that I have not heard of before. I will post an update when we get closer to our decision but right now its all about Motorola.
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High Gain Antennas or PairGains
If you can mount antennas behind the walls, inside the buildings, and pointing to each other, you might be able to try a 24dBi directional antenna with 1 Watt amplifiers. You can find these antennas, cables, and the adaptors to connect to Cisco or Orinoco equipment. I wouldn't use the Apple Airport or Linksys consumer grade wireless equipment... I'd try to stick with the enterprise "survive anything" grade equipment such as Cisco's Aironet 350 bridges or Orinoco's ROR-1000s.
You can see what we're doing at the University of Connecticut where we're using a combination of Cisco Aironet 350 bridges and Hyperlink Antennas and amps to connect a Research Vessel steaming around Long Island Sound. We recently went out with the American School for the Deaf.
If you have some dry pairs (unused pairs of telephone wire going from one building to the next) you could also try PairGain equipment. We use those as well at UConn... they are point to point DSL modems... last I heard, they can push 5Mbs.
If you have any questions about the wireless stuff, you can e-mail me. Good luck!
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Tapping fiber is easy!
The EXFO Live Fiber Detector, along with the 3M Photodyne tool work in a similar way: Momentarily bend an optical fiber and catch some of the photons that wander out. They can distinguish between a dark fiber, one with an "optical tone" (1kHz modulated light), and one with a live signal on it. The question is, are there enough photons there to reconstruct the actual signal, or just enough to distinguish it?
At the office end, ADC makes Optical Splitters which are perfect for monitoring optical traffic, just like the MON jacks built into most copper (T-1 and T-3) cross-connect systems. The only problem here is that the NSA has to make their presence known, and might have to present *gasp* a warrant!
Technically, it's trivial to get at the signal in question. Whether they can do anything with the data at that point, is a much more difficult question to answer.
Aside from the obvious problem of sifting through all the voice and data traffic on these lines, you need to identify the parties involved in an interesting call. This would require monitoring the SS7 link and possibly having access to the SCP(s) involved. Simply hearing a conversation doesn't do a lot of good unless you know who was speaking. -
Tapping fiber is easy!
The EXFO Live Fiber Detector, along with the 3M Photodyne tool work in a similar way: Momentarily bend an optical fiber and catch some of the photons that wander out. They can distinguish between a dark fiber, one with an "optical tone" (1kHz modulated light), and one with a live signal on it. The question is, are there enough photons there to reconstruct the actual signal, or just enough to distinguish it?
At the office end, ADC makes Optical Splitters which are perfect for monitoring optical traffic, just like the MON jacks built into most copper (T-1 and T-3) cross-connect systems. The only problem here is that the NSA has to make their presence known, and might have to present *gasp* a warrant!
Technically, it's trivial to get at the signal in question. Whether they can do anything with the data at that point, is a much more difficult question to answer.
Aside from the obvious problem of sifting through all the voice and data traffic on these lines, you need to identify the parties involved in an interesting call. This would require monitoring the SS7 link and possibly having access to the SCP(s) involved. Simply hearing a conversation doesn't do a lot of good unless you know who was speaking.