Yes and I found the budget of the edps (the institution that manage EU voice, https://eur-lex.europa.eu/budget/data/General/2022/en/SEC09....) the split is not made by projects but we have page 30 "800000€" for all "Information technology equipment and services". But you can probably directly ask them more details if you want : https://edps.europa.eu/about/transparency/public-access-docu...

Yup, as i stated, the answer are not there in the documents. For sure the maintenance of that service comes from the 850k/year, which is a lot of money for the amount of stuff that they do. thank you!