Official-source passage discovery

Search inside 3GPP specifications

Find clauses, named functions, procedures, messages and combinations of terms across the official specification versions Atlas has indexed.

Syntax: Spaces, AND or + require all concepts. Use quotes for literal phrases, OR for alternatives, parentheses for groups and NOT or a leading minus for exclusions. Every OR branch needs a positive term. Query filters such as spec:23.502 release:18 must agree with the selected filters.

Coverage scope: All indexed releases.

Coverage: 0 specifications, 0 release-specific documents and 0 passages indexed. Counts do not establish complete extraction, all historical versions or current-version fidelity.

Index status: 0 current · 0 stale · 20283 missing of 20283 eligible latest-per-release sources. Failed: 0; unsupported: 0; oversized: 0. Failed refreshes may retain searchable older text.

Try an example

Path Switch Request →Named service operation →Combined concepts →Grouped search →

Evidence and coverage

Every result is tied to an extracted official version file. Keyword and terminology retrieval remain the default. Hybrid mode adds local semantic suggestions only when a compatible model and vector snapshot are enabled; its actual use is reported above. All-historical-version search is not enabled.

Figures, image-based equations and unsupported source formats may remain unsearchable. Source similarity is not proof of a normative requirement. Consult the official file before relying on a requirement.

Indexed documents by release

Rel-21: 0 indexed / 11 known specification sources

Rel-20: 0 indexed / 436 known specification sources

Rel-19: 0 indexed / 1843 known specification sources

Rel-18: 0 indexed / 1837 known specification sources

Rel-17: 0 indexed / 1718 known specification sources

Rel-16: 0 indexed / 1621 known specification sources

Rel-15: 0 indexed / 1514 known specification sources

Rel-14: 0 indexed / 1326 known specification sources

Rel-13: 0 indexed / 1288 known specification sources

Rel-12: 0 indexed / 1259 known specification sources

Rel-11: 0 indexed / 1196 known specification sources

Rel-10: 0 indexed / 1066 known specification sources

Rel-9: 0 indexed / 1127 known specification sources

Rel-8: 0 indexed / 1097 known specification sources

Rel-7: 0 indexed / 911 known specification sources

Rel-6: 0 indexed / 805 known specification sources

Rel-5: 0 indexed / 623 known specification sources

Rel-4: 0 indexed / 605 known specification sources

Machine-readable ingestion coverage → Structured evidence coverage →