For the Turkish basketball club, see Türk Telekom B.K.. Türk Telekom is the formerly state-owned Turkish telecommunications company. Türk Telekom was separated from the Post Office in 1995. In November 2005, it was privatized to Oger Telecom. Turk Telekom group provides integrated telecommunication services from PSTN, GSM to wide-band Internet. Turk Telekom group companies had 16.8 million PSTN customers, 6 million ADSL customers and 12.1 million GSM customers as of September 30, 2009.