@Camps And can be used the GPON SFP module Ubiquiti Fiber Instant? It is questionable whether the transfer of internet from the provider is done by the SFP module or by the ER7412-M2?

the first question is it possible to use an fiber splitter in combination with WDM? Scenario: I place a TL-FC311A-20 behind the router, to which I connect an optical splitter and on the opposite side...