Ikhebula yenethiwekhi iyisisekelo sokusungula ukuxhumana kwenethiwekhi yekhompiyutha futhi ihilela ukufakwa nokucushwa kwengqalasizinda ebonakalayo esetshenziselwa ukudlulisa idatha kunethiwekhi.
I-OPGW (umugqa wokudlulisa amehlo) intambo yokubona esetshenziswa emigqeni yokudlulisa yamandla kagesi aphezulu engadlulisela kokubili amasiginali wamandla nawokubona.