Empresa Nacional de Telecomunicaciones is engaged in the provision of telecommunication services. Services provided include local, domestic and international long-distance calls, international direct dialing, international directory assistance, international business toll-free service, mobile maritime service via satellite, video conference, international telephone cards, bank credit cards, collect calls, television and radio transmission services, and private corporate networks through a digital network offering voice, data, fax, image and internet services.

Telefonica is engaged in the provision of public or private telecommunications services, including ancillary or complementary telecommunications services or related services. Co.'s fixed business includes: traditional fixed telecommunication services, Internet and broadband multimedia services, data and business-aplications services, and wholesale services for telecommunication operators. Co. also provides a range of mobile and related services and products to consumer and business customers, including mobile voice services, value added services, mobile data and Internet services, wholesale services, corporate services, roaming, fixed wireless, and, trunking and paging.