All 3G and GSM specifications have a 3GPP specification number consisting of 4 or 5 digits. (e.g. 09.02 or 29.002). The first two digits define the series as listed in the table below. They are followed by 2 further digits for the 01 to 13 series or 3 further digits for the 21 to 55 series. The term "3G" means a 3GPP system using a UTRAN radio access network the term "GSM" means a 3GPP system using a GERAN radio access network. (Thus "GSM" includes GPRS and EDGE features.)-All 3G and GSM specifications have a 3GPP sp ecification number consisting of four or five digits. (e.g. 09.02 or 29.002). The first two digits def BrdU the series as listed in the table below. They are followed by two further digits for the 01 to 13's eries or three further digits for the 21 to 55 series. The term "3G" means a system using a 3GPP UTRAN ra dio access network the term "GSM" means a 3GPP sy GERAN stem using a radio access network. (Thus " GSM "includes GPRS and EDGE features.)