We implemented this of course with empty conduits in the ceiling, but we do not have a suspended ceiling on the ground floor, so the cable hangs from the ceiling and now has to be connected somehow. There is an on-site configurable L-shaped connector from Telegärtner that just fits into the cable opening of the AP. This is how we will solve it now. I imagine putting in a jack is even more difficult since an additional patch cable would also have to be placed in the already too small cable duct.