I use GPON ONU Mikrotik and it disconnect from OLT. I need to go on site to shutdown the router for force the GPON ONU to reboot and get him config.

There have any method to shutdown the power only on the SFP with unplug the router ?

Router model : RB960PGS (hEX PoE)
GPON ONU : https://mikrotik.com/product/SFPONU

Link is ok, but there have no connection with my OLT (Adtran).

Thank you