Probably work point numbers , a typical planning job pack is laid out as WP’s , typically something like At WP1, JUF4 o/s No.1 Any Street, provide medium TM splitter node , introduce coiled 36f COF 600, lay out fibres as per job pack.
At WP2 , JUF4 o/s No.10, Any Street, provide 30m 12 way CBT from WP1 .
At WP3, JUF4 o/s No.30, Any Street , provide 70m 8 way CBT from WP1.
The number sprayed on the box lid ( Jointbox Unreinforced Footway 4 in my example ) doesn’t indicate what’s going inside but indicates a location for some work , not every box will be a work point even if new cables run through them on route to or from WP’s….obviously in an overhead area a WP could be on a pole.
Thanks for this! I seen loads of Openreach doing Full Fibre cable in other area of my home, in around Dawley. hopefully not too long now for Woodside & Madeley next soon.