telephony - the art of projecting a sound wave in a given apparatus, transforming the sound wave into an electrical wave, passing the electrical wave over a wire or circuit, and then transforming the electrical wave back into sound wave
ensembles des services et des techniques permettant une communication entre une station mobile et une station fixe ou mobile
Competition has boosted the development of mobile telephony. Penetration rates have gone up since liberalisation from 11% to 48% of the population. Low income households are more likely to rely exclusively on mobile telephony than high income ones (6% of households compared to 2%) even though the overall rate of usage rises with income.
