market analysis and demand forecast for mobile telephony services the case of italy cinthia campi department industrial engineering university rome tor vergata via del politecnico 1 00133 roma email disp uniroma2 it jel code c53 l80 o33 keywords 3g umts logistic model abstract aim this paper is to analyze evolution 3 g after a introduced applied italian growth simulation considers three possible scenarios an optimistic realistic pessimistic one results concern both active lines nominal penetration all extended communications industry lies in highly significant stage characterized by convergence process with information sector internet next big step since allows taking advantage vast array personalized multimedia where voice data combine technological from gsm universal telecommunications system third generation phones opens new worlds within communication partly