Products classified in categories I and II must, necessarily, perform the maintenance.
Class I products: held annually
Class II products: carry out two years
Category III products: do not perform maintenance. Only in case of change in the current resolution to the product.
Maintenance must be performed when the applicant (customer) sells or has in stock the homologated product.
If the maintenance is not performed until the expiration date of the certificate, Anatel automatically suspends the certificate. To renew the homologation after suspension Anatel determines the period of 180 days. After this period is finished, the certificate is automatically canceled and the renewal thereof to hold a new certification is required.