Türk Telekom Group, the leading communication and convergence technology group in Turkey, provides integrated telecommunication services from PSTN and GSM to broadband internet. As of March 31, 2011; Türk Telekom group companies have 15.8 mn Fixed Access Lines, 6.7 mn ADSL Connections and 11.8 mn Mobile Subscribers. Group companies have a modern network infrastructure covering the whole country and offer a wide variety of services to residential and commercial customers all over Turkey. Apart from 81,4 % shares in Avea, one of the three GSM operators in Turkey, Türk Telekom owns 100% of wholesale data and capacity service provider company Pantel International AG and its subsidiaries, 99.9% of broadband provider TTNET, convergence technologies company Argela, IT solutions provider Innova, online education company Sebit A.Ş., online gaming company Sobee and call center company AssisTT. Türk Telekom also has an indirect minority share in Albtelecom, the Albanian incumbent telecom operator. 55% of Türk Telekom shares belongs to Ojer Telekomünikasyon A.Ş. and 30% belongs to Turkish Treasury. The remaining 15% is publicly traded. Türk Telekom shares are listed in Istanbul Stock Exchange since May 2008.