Mandatory testing and certification of telecommunications equipment now required for specified transmission and PON devices before import, sale, or use. Mandatory testing and certification is imposed under the MTCTE regime for Phase II equipment, covering transmission terminal and PON family broadband devices; portal-accepted certification is required for processing, and testing and certification are mandatory preconditions for import, sale or use in India. Customs officers must treat the Public Notice as a standing order for enforcement and use the MTCTE portal as the administrative mechanism.