Interconnection is required as a part of facilitating the access to the network. Telia Eesti AS (previously AS Eesti Telekom), Elisa Eesti AS, CITIC Telecom CPC Estonia OÜ, Top Connect OÜ, Elisa Teleteenused AS, STV AS, RIKS, Nord Connect OÜ, TeleOne OÜ, Telset AS, Loginet Solutions OÜ, Tele2 Eesti AS and OÜ CSC Telecom Estonia are dominant market players.