Hellenic Telecommunications Organization SA engages in the provision of telecommunication services. It operates through the following segments: OTE, COSMOTE Grou[, Telekom Romania Mobile, and Others. The OTE segment provides fixed-line services, internet access services, ICT services and TV services in Greece. The COSMOTE Group segment offers mobile telecommunications, retail operations, and customer services. The Telekom Romania Mobile segment includes mobile telecommunications services in Romania. The company was founded in 1949 is headquartered in Maroussi, Greece.