History
Turkey met with GSM technology in 1994, when the system was first put into service for subscribers in Ankara, Istanbul, and İzmir. On 24 April 1995, the telecommunication and postal services of PTT were separated, leading to the foundation of Türk Telekomünikasyon A.Ş.
In April 1998, the GSM network was licensed for 25 years to the firms Turkcell and Vodafone Turkey. In June 1999, ADSL service was introduced to provide high-speed voice and image communication. Cable Internet applications began in 2000 on the existing cable TV infrastructure.
In January 2001, Aycell Haberleşme ve Pazarlama Hizmetleri A.Ş. was founded, followed by the start of operations by Iş-TIM Telekomünikasyon Services Inc. under the commercial name Aria in March 2001.
In February 2004, TT&TIM Communication Services Inc. was established through the merger of Türk Telekom's GSM operator Aycell and İŞ-TİM. Its commercial name was changed to Avea İletişim Hizmetleri A.Ş. in October 2004. In July 2004, Türksat A.Ş. was formed as a separate entity.
On 14 November 2005, Türk Telekom's privatization was completed, with 55% of its shares sold to Saudi Oger. On 15 September 2006, Türk Telekom acquired İŞ-TİM's 40.56% stake in Avea for US$500 million, increasing its ownership to 81.12%.
On 15 May 2008, an initial public offering of 15% of Türk Telekom shares was completed, and the shares began trading on the Istanbul Stock Exchange. In July 2009, Avea launched 3G services.
On 22 December 2018, Oger Telekom's creditors took control of Türk Telekom following billions of dollars in unpaid debt. In 2022, the Turkey Wealth Fund purchased 55% of the company, regaining the shares previously held by Oger Telekom. {[9]
It provides ADSL, dial-up, Wi-Fi, G.SHDSL, ATM, Frame Relay, and Metro Ethernet Internet access services to corporate and personal customers in 81 cities in Turkey. TTNET became the first Turkish company to be accepted into the United Nations' "Business Call to Action (BCtA)" program, which seeks to encourage companies to "develop inclusive business models that offer the potential for both commercial success and development impact", {[10]
Innova IT Solutions
Innova Bilişim Çözümleri A.Ş. provides services to the institutions in areas, such distribution, finance, and telecommunications. It includes the consultancy-design-application development-integration-maintenance value chain.<ref n[11]
AssisTT
AssisTT is a customer service and call center company that also provides sales and marketing data.<ref n Türk Telekom holds a 100% interest in AssisTT, which was established in November 2007. As of the end of 2013, there were 115 million incoming calls (an 11% annual increase), which generated 360 million minutes of service time (a 13% annual increase). {[12]
Sebit
The activities of SEBIT Eğitim ve Bilgi Teknolojileri A.Ş. had started in 1988, in a multimedia laboratory founded within Turkey's Scientific and Technological Research Council (TÜBİTAK). The lab was privatized in 1996 and the production of computer supported education contents towards K-12 level.
