Openreach won’t use any equipment you supply , even if you managed to source something from the same manufacturer that Openreach use .
Internal CSP are rare for a few reasons , no external point where the internal and external fibres can be ‘split’ for testing purposes, with an overhead feed , an internal CSP suggests that the cable would be entering the property at height , this is generally avoided for safety reasons etc , and similarly an external CSP mounted high up on the property is avoided , as it also means the splicer has to be used at height , probably on a ladder , difficult to maintain three points of contact ( both feet and one hand )on the ladder while using a splicer , plus drop it from height that’s a £3000 machine destroyed.
Ask nicely or complain vociferously you may get an internal CSP , but the request may also be refused, if the standard overhead method of provision, external cable from height to a low level (cable on wall ) , CSP fitted , and then an ‘internal’ cable into the building the ingress point where you would like it ( if that’s at height , another cable on wall to that position ) ….if you know all this in advance and it’s unacceptable, don’t order , that way you don’t waste your own time as well as Openreach’s .
