BT have put some markings on a pavement that I'm trying to figure out. Two white rectangles, one labeled "A.I.O" (I'm guessing this is for an all in one cabinet?) and the other one, about the same size but divided into two halves, one half with the letter "J" and the other with the letter "B".
I'm mystified by this, I originally thought it was going to be a typical two cabinets, but the AIO marking suggests not. If anyone knows what these markings mean I'd be grateful - it's got me intrigued and I can't find any similar looking markings from a google image search!