Brazil decrees call authentication and 15-day blocks for abusive callers
Provisional Measure 1.396, dated 9 October and published in Brazil's official gazette on 13 October, requires the originating provider to authenticate each call, transit providers to preserve that authentication and the terminating provider to verify it before delivery, with unauthenticated calls blocked except where Anatel allows. Authenticated company calls must display the registered business name and logo drawn from a central numbering database that providers fund. Anatel has 60 days to issue the general rules and 30 days for the per-line limits; Congress must approve the measure within 60 days, extendable once, or it lapses.
Any carrier or aggregator terminating voice into Brazil, and any enterprise calling Brazilian customers, now has a sign-preserve-verify chain and a brand-identity registry to build against, on Anatel's clock rather than the 2028 date the government says this replaces.
Ask your Brazilian termination partners which authentication scheme they expect Anatel to adopt, and start collecting the business name, CNPJ and logo data your outbound numbers will need in the central database.