21st model - October 2017 / March 2018

21^st data specification template, on roaming on public mobile telephone networks within the European Union, for the period 1 October 2017 to 31 March 2018. Providers are required to complete the template and submit it to ANACOM by 11 May 2018, to the address dee.stats@anacom.ptmailto:dee.stats@anacom.pt.