Some of you may have seen my map. In the process of collating something like that I read a whole bunch of forum posts, official documents, etc. and so most of what I've seen makes sense. Some things though, I still don't understand. Of course they might not make any sense to anyone, the world is not a tidy easily understood place, but just in case:
1. A pair of cabinets, a short walk apart (say, 200 metres, across a major road bridge though) with the same exact cabinet number, apparently in the same exchange and both recently (re)built. One has an FTTC cab a few metres away, the other is sat on its own. What's that all about? Do some of those premises get FTTC and the others not?
2. A road has about half a dozen cabinets in fairly rapid succession (maybe 2-5 minutes walk apart), each serving a long street off that road. Makes sense so far, but just one of these cabinets, in the middle has no adjacent FTTC. The fibre logically must run right past it, surely? And there's a nice long street full of potential customers, so ...?
3. Openreach says a particular house should get 75+Mbit FTTC from a particular cabinet. So that cabinet ought to be fairly nearby. I've wandered all around, can't find the corresponding cabinet. Best candidate is a weird old busted-up cabinet with no number and no FTTC cabinet nearby. Is there some way it could get FTTC without an extra cabinet? Are Openreach just sometimes wrong or predicting values for a build they've not even begun?
4. BT cabinets of a particular era have an adjacent blank for another lock next to each of the standard BT locks. If you've spent any time staring at cabinets you know the ones I mean. Near to the motorway I found a cabinet with no labels and instead of blanks the other set of locks were present too. It may or may not be a coincidence that there was a huge cell phone transceiver stack a few paces away on the other side of a fence. Does the presence of the BT-style locks indicate this cabinet was to be opened by BT? Do the other locks mean somebody else's keys are needed too, or that either can open it?