HOW TO rectify of S2 OPTICAL NO POWER IN GPON TECHNOLOGY,HOW TO USE VFL,HOW TO SPLICE OF FIBER

HOW TO rectify of S2 OPTICAL NO POWER IN GPON TECHNOLOGY,HOW TO USE VFL,HOW TO SPLICE OF FIBER
HOW TO WORK nokia 7360 FX-8 & 4 HOW TO WORK FTTX TECHNOLGY,, fttx knowledge intervew,fttx photo VIDEO ,OLT,GPON TECHNOLOGY , HOW TO WORK OPTICAL FIBER WORK,HOW TO WORK FTTX ENGINEER .