{"id":4846,"number":"03.14","type":"TS","title":"Support of Dual Tone Multi-Frequency Signalling (DTMF) via the GSM System","series":3,"status":"Under change control","initial_release":"Phase 1","primary_group":"C1","secondary_groups":[],"portal_id":121,"portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=121","dynareport_url":"https://www.3gpp.org/dynareport/0314.htm","publication_scope":null,"radio_technologies":[],"first_seen_at":"2026-09-16T11:04:46.949941+00:00","updated_at":"2026-10-16T09:34:47.275473+00:00","raw_metadata":{"source_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=121","bibliography_source":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv"},"detail_synced_at":"2026-10-07T21:59:06.085358+00:00","versions":[{"release":"Release 1998","version":"7.0.1","meeting":"-","upload_date":"1999-08-10","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/03_series/03.14/0314-701.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Release 1998","version":"7.0.0","meeting":"-","upload_date":"1999-02-12","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/03_series/03.14/0314-700.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":23727,"version_status":null},{"release":"Release 1997","version":"6.0.0","meeting":"-","upload_date":"1998-10-16","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/03_series/03.14/0314-600.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Phase 2+","version":"5.0.0","meeting":"-","upload_date":"1996-10-11","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/03_series/03.14/0314-500.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Phase 1","version":"3.0.2","meeting":"-","upload_date":"1995-01-01","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/03_series/03.14/0314-302.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Phase 2","version":"4.1.1","meeting":"-","upload_date":"1994-09-13","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/03_series/03.14/0314-411.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Phase 2","version":"4.1.0","meeting":"-","upload_date":"1994-04-15","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/03_series/03.14/0314-410.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":20287,"version_status":null},{"release":"Phase 2","version":"4.0.0","meeting":"-","upload_date":"1993-06-25","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/03_series/03.14/0314-400.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null}],"release_presence":[{"release":"Phase 1","first_version_date":"1995-01-01","latest_version_date":"1995-01-01","first_version":"3.0.2","latest_version":"3.0.2","version_count":1},{"release":"Phase 2","first_version_date":"1993-06-25","latest_version_date":"1994-09-13","first_version":"4.0.0","latest_version":"4.1.1","version_count":3},{"release":"Phase 2+","first_version_date":"1996-10-11","latest_version_date":"1996-10-11","first_version":"5.0.0","latest_version":"5.0.0","version_count":1},{"release":"Release 1997","first_version_date":"1998-10-16","latest_version_date":"1998-10-16","first_version":"6.0.0","latest_version":"6.0.0","version_count":1},{"release":"Release 1998","first_version_date":"1999-02-12","latest_version_date":"1999-08-10","first_version":"7.0.0","latest_version":"7.0.1","version_count":2}],"classifications":[],"work_items":[],"change_requests":[{"portal_cr_id":null,"cr_number":"A004","revision":null,"category":"D","impacted_version":"..","target_release":"R98","title":"Support of Dual Tone Multi-Frequency signalling (DTMF) via the GSM system.(Harmonisation)","wg_tdoc":null,"wg_status":null,"tsg_tdoc":"P-99-308","tsg_status":"approved","new_version":"7.0.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0001","revision":"1","category":"C","impacted_version":"..","target_release":"Ph2","title":"Support of DTMF in the land to mobile direction","wg_tdoc":null,"wg_status":null,"tsg_tdoc":"91/90","tsg_status":"approved","new_version":"..","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0002","revision":null,"category":"B","impacted_version":"..","target_release":"Ph2","title":"Editorial changes for phase 2 to 03.14","wg_tdoc":"861/92","wg_status":"agreed","tsg_tdoc":"68/93","tsg_status":"approved","new_version":"..","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0003","revision":null,"category":"F","impacted_version":"..","target_release":"Ph2","title":"Improvement of DTMF scheme","wg_tdoc":"116/94","wg_status":"revised","tsg_tdoc":null,"tsg_status":null,"new_version":"..","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0003","revision":"1","category":"F","impacted_version":"..","target_release":"Ph2","title":"Improvement of DTMF scheme","wg_tdoc":"187/94","wg_status":"agreed","tsg_tdoc":"220/94","tsg_status":"approved","new_version":"4.1.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0004","revision":null,"category":"F","impacted_version":"4.1.1","target_release":"Ph2","title":"DTMF compatible with fixed telephony","wg_tdoc":"582/94","wg_status":"rejected","tsg_tdoc":null,"tsg_status":null,"new_version":"..","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null}],"relationships":[],"relationship_release_evidence_summary":[],"relationship_release_evidence":[],"relationship_release_evidence_meta":{"total":0,"returned_count":0,"limit":100,"truncated":false,"href":"/api/specs/03.14/relationship-evidence"}}