Telephone numbers in Turkey former area codes other than the primary one mentioned. The country calling code of Turkey is 90. trunk / inner - city code number : 0 international code : 00 Ankara DMS-300 Istanbul DMS-300 İzmir DMS-300 Ankara, İstanbul and İzmir DMS-300 International Exchanges Accept: L/D + area code + subscriber number + ST L /D = language digit : 0 (direct dialing) L /D = language digit : 2 (operator assistance) There are two international operator centers in Turkey, Ankara and İstanbul. Each one of these centers provides operator telephone services according ITU/T dialing: L/D + code11 + ST (Random)
Long-distance calling completed on demand. Transatlantic International Direct Dialing between New York City (212 area code) and London (01 STD code) was introduced in 1970, with service extended to the whole of the USA and the 6 largest UK cities in 1971. Collect/Reverse Charge calling Various schemes were devised to allow large organisations to automatically accept collect calls, where the recipient pays long-distance charges for any call from a predefined area. A Zenith number in the late 1950s required an operator manually determine the destination number from a printed list; the 1967 Wide Area Telephone Service introduced the first automated toll-free telephone