All 3GPP specifications are publicly available on the 3GPP server. This page provides guidance as to how to find the specifications you are seeking. If you are looking the official versions as published by the 3GPP partners, see the official publications page.
If you know the specification number and just want the latest available version, go here:
If you know the specification number and want a particular version, go here:
If you know the title or subject, but do not know the spec number, go here:
If you want all the specifications under the responsibility of a particular working group, go here:
Following the TSG plenary meetings, revised version of many
specifications are produced. They are sub-categorised by the release
of the specifications. These updated versions, together with the
latest previous available version of those specification which were not changed
are available in:
ftp://ftp.3gpp.org/specs/2001-06/
All older version of specification, where available are stored
in the archive subdirectory. All versions of all releases of a given
specification are place directly under the name of the specification.
ftp://ftp.3gpp.org/specs/archive/
If you only know the title or the subject, but not the specification number, best place to start looking is the status list which contains the full titles of all specifications. A high level description of each series of specification is available in on the page for Releases and the numbering scheme for 3G specifications. Once you have identified possible specification numbers, go the the "Latest Version" directory mentioned above.
Each 3GPP working group has a home web page, which amongst other things lists the specifications under their responsibility. Follow the links from here....