Telephone services in Turkey Telephone services in Turkey This article covers the telephone services in Turkey. The political authority is Ministry of Transport, Maritime and Communication (Turkey) . But there is also a supreme council (); Information and Communication Technologies Authority (abbreviated BTK) which controls the internet and point to point telecommunication . Turk Telekom a private company issued from state owned Turkish PTT in 1995 is responsible in Turkish land phone. In 2013 the number of telephone subscriber is 13.86 million. International call code of Turkey is 90. Mobile phone service is provided by three private companies; Turkcell, Vodafone Turkey (former Telsim) and
Vertical service code Numbering Plan Administration for use in the NANP territories. Not all of these services are available in all areas, and some are only available to landline or cellular telephones. Local Area Signalling Services (LASS) and Custom Calling Feature Control Codes: Vertical service code A vertical service code (VSC) is a sequence of digits and the signals star (*) and number sign (#) dialed on a telephone keypad or rotary dial to enable or disable certain telephony service features. Some vertical service codes require dialing of a telephone number after the code sequence. On a touch tone telephone, the codes are