Brazil ANATEL had published the Act 3939 related to guideline of Declaration of Conformity (DoC) with testing report. The applicant (local rep) can apply the procedure directly with ANATEL without requiring the use of one OCD.
The DoC requirements are basically the same as normal COC (representative letter, manual, internal and external pictures, Factory ISO and testing report (overseas ILAC testing report is acceptable) it is just that the CoC will be replaced by a DoC declaration. Applicant will submit the files to ANATEL and ANATEL will inspect the documents as usual before issuing the homologation.
The DoC is applicable only for a few types of equipment according to Act 7280, such as: Broadcasting equipment, RF Power Amplifier for Earth Station, Satellite Transceiver, etc. You can see it in the ANATEL No 7280.