CSELT situated in Torino, Italy, is the research company owned by STET (Societa Finanziaria Telefonica per Azioni), the largest telecommunications company in Italy. CSELT has contributed to standards under ITU, ISO, and ETSI and has participated in various research programs. In order to influence the production of standards, CSELT participates in groups such as DAVIC, the ATM Forum, and in the Network Management Forum.