In this paper new ways of facing the problem of mobile multimedia source traffic modelling are first discussed. Then, based in some hypothesis for mobility, and for the number of available resources, tele-traffic system capacity results are achieved using a 'macroscopic' model, very useful for cellular
planning purposes. This allow for the comparison o f capacities among different systems (GSM, UMTS, Enhanced UMTS and Mobile Broadband System), measured in terms of supported data rate per ilometre, and a kind of generalisation of Moore's andlor Gilder's law to mobile communications.