当然,有些协议及属于GSM也属于UMTS.
原文如下,已经描述的很详细了.不翻译了.
All 3GPP specifications have a specification number consisting of 4 or 5 digits. (e.g. 09.02 or 29.002).
The first two digits define the series, followed by 2 further digits for the 01 to 13 series or 3 further digits for the 21 to 55 series.
The full title, specification number and latest version number for every specification can be found in the current status list
An automated list of Specification numbers - with the Title and details of the Specification Group responsible.
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 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.