The first action plan of the CEPT Group GSM was approved in December 1982, requesting that "The services and facilities offered in the public switched telephone networks and public data networks ... should be available in the mobile system."
Prvi plan CEPT Group GSM-a je odobren u decembru 1982. godine, sa zahtevom da usluge i platforme u javnoj telefonskoj mreži i javnoj mreži za razmenu podataka... treba da budu dostupne mobilnom sistemu.