| 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.) A specification in the 21 to 35 series may apply either to 3G only or to GSM and 3G. A clue lies in the third digit, where a "0" indicates that it applies to both systems. For example, 29.002 applies to 3G and GSM systems whereas 25.101 and 25.201 apply only to 3G. Most specs in all other series apply only to GSM systems. However, as the spec numbering space has been used up, this guide is more frequently broken, and it is necessary to examine the information page for each spec (see the table below) or to check the lists in 01.01 / 41.101 (GSM) and 21.101 (3G) for the definitive specification sets for each system and each Release. 所有3G和GSM规范具有一个由4或5位数字组成的3GPP编号。（例如：09.02或29.002）。前两位数字对应下表所列的系列。接着的两位数字对应01-13系列，或3位数字对应21-55系列。词"3G"意味着采用UTRAN无线接入网的3GPP系统，词"GSM" 意味着采用GERAN无线接入网的3GPP系统（因而，"GSM"包括GPRS和EDGE性能）。 21-35系列规范只用于3G或既用于GSM也用于3G。第三位数字为"0"表示用于两个系统，例如29.002用于3G和GSM系统，而25.101和25.201仅用于3G。其它系列的大多数规范仅用于GSM系统。然而当规范编号用完后，须查看每个规范的信息页面（见下表）或查看01.01 / 41.101 (GSM) 和21.101 (3G) 中的目录。 |
| Subject of specification series 规范系列主题 | 3G/GSM R99 and later 3G/GSM R99 或以后 | GSM only (Rel-4 and later) 仅GSM (Rel-4 或以后) | GSM only (before Rel-4) 仅GSM (Rel-4以前） |
| General information (long defunct) 一般信息 | | | 00 series |
| Requirements 要求 | 41 series | 01 series | |
| Service aspects ("stage 1") 业务方面（“阶段1”） | 42 series | 02 series | |
| Technical realization ("stage 2") 技术实现（“阶段2”） | 43 series | 03 series | |
| Signalling protocols ("stage 3") - user equipment to network 信令协议（“阶段3“）：用户设备-网络 | 44 series | 04 series | |
| Radio aspects 射频方面 | 45 series | 05 series | |
| CODECs 编解码 | 46 series | 06 series | |
| Data 数据 | 47 series (none exists) （不存在） | 07 series | |
| Signalling protocols ("stage 3") -(RSS-CN 信令协议（“阶段3”）：(RSS-CN | 48 series | 08 series | |
| Signalling protocols ("stage 3") - intra-fixed-network 信令协议（“阶段3”）：与固定网络之间 | 49 series | 09 series | |
| Programme management 程序管理 | 50 series | 10 series | |
| User Identity Module (SIM / USIM) 用户识别模块 (SIM / USIM) | 51 series | 11 series | |
| O&M 运营和维护 | 52 series | 12 series | |
| Access requirements and test specifications 接入要求和测试规范 | | 13 series (1) | 13 series (1) |
| Security aspects 安全方面 | (2) | (2) | |
| SIM and test specifications SIM和测试规范 | (2) | 11 series | |
| Security algorithms (3) 加密算法 | 55 series | (4) | |
| Note (1): The 13 series GSM specifications relate to European-Union-specific regulatory standards. On the closure of ETSI TC SMG, responsibility for these specifications was transferred to ETSI TC MSG, (Mobile Specification Group) and they do not appear on the 3GPP file server. Note (2): The specification of these aspects are spread throughout several series. Note (3): Algorithms may be subject to export licencing conditions. See the relevant 3GPP page. See also the relevant ETSI pages. Note (4): The original GSM algorithms are not published and are controlled by the GSM Association. 注释（1）：13系列GSM规范与欧盟规范管理标准有关。这些规范由ETSI TC MSG, (Mobile Specification Group)负责，不出现在3GPP文件中。 注释（2）：这方面的规范分散在几个系列中。 注释（3）：算法可能受出口许可条件的限制，参见相关的3GPP网页或ETSI网页。 注释（4）：最初的GSM算法没有公开，由GSM协会控制。 | |||
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