Quick question, what is under those metal plates on the ground, probably about 1m x 1m square in total made up of 4 seperate plates which have "Telecom" written on them? My sister has one outside her new house.
It is a jointing pit. The hole is deep enough for someone to stand in and when emergency jointing is required it is not uncommon to have two people in the pit jointing a main distribution cable to get service restored.
If the lid came off today, it would likely be half-full of water. (When work needs to be done in a pit, typically the first thing the workers need to do is pump the water out). All of the cable joints are designed to be waterproof so we don't worry about water in the pit.
There are pits along main / high capacity routes and between those pits are several ducts.
We pull new cables from one pit to the next to get new capacity down the road.
There will be a mix of legacy copper distribution cables and new fibre cables pulled through the ducts.
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