rural and mobile telephone systems, earth and space-based telecommunications such as transport networks, satellites, fibre optics, Integrated Service Digital Networks (ISDN) and data transmission,
sistemi telefonije na podeželju in mobilne telefonije, zemeljskih in vesoljskih telekomunikacij, kot so oddajniška omrežja, sateliti, optična vlakna, digitalna omrežja z integriranimi storitvami (ISDN) in prenos podatkov,