It looks like the Internal CSP Openreach use.
Its normally used in places where an External CSP isn’t an option, like on a Block of Flats and or a Listed Building where you can put any furniture on the external wall.
I’ve never installed one personally so I’m unsure if they have any markings on them, i.e. are Branded.
Thought so, its been sitting at the top of my landing for over 2 months now, but they refuse to move on it.
It’s not a CSP, it’s an MDU breakout box. They’re used in blocks of flats where the fibre has been run internally, and there should be one serving each flat. The cable will be run from here as and when each flat orders FTTP
It contains an SC/APC coupler so it’s “plug and play” when the installation is done to the individual flats.