NOS is a Portuguese telecommunications and media company that provides mobile and landline telephony, cable TV, satellite TV, and internet. The company was created due to the fusion of two large telecommunications companies: Zon Multimédia (formerly known as PT Multimédia, a spun-off media company Portugal Telecom) and Optimus Telecommunications by Sonae in 2013.
FIBRAIN supplied the NOS Boxes with BU-XN equipment along with splitters and patchcords. The equipment has ODF technical qualifications.