3GPP Specifications for UMTS
The 3rd generation partnership project (3GPP) maintains several hundred specifications that define the operation of UMTS and GSM. This section of the website is a summary of the UMTS specifications and a visual interface to them.
A typical 3GPP specification number looks like this:
TS 25.331 v5.17.0
(A few specifications are divided into parts or even subparts. For example, TS 29.198-04-1 is TS 29.198 part 4 subpart 1.)
You can navigate the website by following the links shown in blue above. The site currently includes links to the technical specifications from release 99 up to release 7 in the indicated series, together with a few of the most useful technical reports. Other series and releases will be added in due course. You can select the release of interest using the pull-down menu on the left: the website will find the latest technical and editorial version automatically.
3GPP produces revised versions of the specifications four times a year, after its quarterly TSG plenary meetings. The material here was last updated after the TSG plenary meeting in December 2006.
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