An update to this, should you wish to extend the fibre or change it from to face plate to router.
It is simplex fibre OS2, (9/125), with LC to LC connectors, these need to be APC type, usually identified by a green connector, coupling the fibre use LC/APC to LC/APC connectors, again these are usually green to identify them. APC indicates the polish to the end of the fibre is at 8 degrees, mixing with UPC connectors will introduce signal losses, typically these are blue. Took me a while to dig up all of this! Everyday is a school day!