SIPEweb (own development system) allows to program a survey to be later hosted on the SMR internet server as a webpage, working (online) in all usual browsers, even in tablets /mobile phones (Android) or ipads / iphones (iOS). In this way, complex surveys can be answered by browsing thru a webpage. Using SIPEweb for phone data collect (CATIweb) manages to make the process more efficient. The possibility of more than one survey team working simultaneously on the same project, from anywhere in the world, is a great tool that helps optimize the phone fieldwork, both in time and quality. Beyond the advantages that has CATIweb over traditional survey systems, conduct telephone surveys with SIPEweb allows online quotas follow up and automatic control of them thru a website. Also, it is linked to SIPEwin which allows data follow up and tabulation in real time.