Celular del futuro

                                     Pasado,presente y futuro de las telecomunicaciones
                                      -1G Red celular analogica conmutacion de circuitos
                                          -2G Red celular digital (GSM)
                                                -2.5G Red celular digital (GPRS)
                                                     -3G Red celular digital (UMTS)
                                                           -4G Red celular digital multimedia todo ip (VOIP)