Iyo GD-7018 yakatevedzana optical fiber pombi identifier inokwanisa kuwana uye kuyera kudzika kwepombi dzepasi pevhu, tambo uye tambo dzemaziso pasi pemamiriro epasina kuchera, uye kuwana nemazvo nzvimbo dzakakuvara dzekunze kwekuputira mapaipi epasi uye nzvimbo yepasi. underground cable fault points.