Fibre optic cables run from the telephone exchange to a nearby street cabinet before using the existing copper telephone wires to connect the remaining distance to each premises.
Mae ceblau ffeibr optig yn rhedeg o’r gyfnewidfa ffôn i gabinet stryd cyfagos cyn defnyddio’r gwifrau ffôn copr presennol i gysylltu’r pellter sy’n weddill â phob adeilad.