[1][2] Telecom companies have included České Radiokomunikace, O2 Czech Republic (formerly Telefonica O2 Czech Republic),[3] Vodafone Czech Republic (formerly Oskar Mobil a.s.), CETIN, CS Link, Eurotel, Skylink and Telekom Austria Czech Republic.
[7] Copper subscriber systems have been improved with Asymmetric Digital Subscriber Line (ADSL) equipment to accommodate Internet and other digital signals.
Trunk systems include fibre-optic cable and microwave radio relay.
[10] In 2000, the radio broadcast stations were AM 31, FM 304 and shortwave 17.
[12] There were 35 Internet Service Providers in 1999,[9] and more than three hundred in 2000.