2. Calculation formula for IQS in 2016 Print Veja esta página em Português 2.1. Decision of ANACOM of 02.03.2017 2.2. Calculation formula for IQS4 and IQS5 presented by CTT on 03.05.2017 2.3. Calculation formula for IQS4 and IQS5 presented by CTT on 29.09.17