Well, you have to realise that lines go down all the time. and anyplace that a line gets cracked, smashed, or generally disconected, the only way to put it back together is with one of thease junction boxes.
it's invisable to the data, it's a packet-filter. it just routes packets to the next location. you can even set them up to mymic from either side, the router that's suppose to be on the other side of it.
so you go from Router A talking to router B
to Router A talking to a fake router B that transmits it's data as a fake router A
it won't even show up unitll they have to replace router with new hardware (how often do they upgrade their grid?) and router B that's suppose to be receving information from the new and improved router X keeps getting information from the old router A, that's sitting in the trunk of some field-tech's car.
and, in the area's where most of the safehouses I know are located... service goes down all the time due to gang war... so a couple of seconds of flicker could be a power outage, and not someone hacking the lines. they don't have time to invenstagate all the flickers and blimps.
you could go with a wireless transcever, but you'll get some signal loss (from other wireless devices) and it's a bit slower than tapping straight into the backbone.
but really, if you were going to go that route, you could just get a hacked cellphone, and dial up that way.
-RuskiFace the Pirate