{"id":6472,"number":"26.273","type":"TS","title":"ANSI-C code for the fixed-point Extended Adaptive Multi-Rate - Wideband (AMR-WB+) speech codec","series":26,"status":"Under change control","initial_release":"Rel-6","primary_group":"S4","secondary_groups":[],"portal_id":1448,"portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=1448","dynareport_url":"https://www.3gpp.org/dynareport/26273.htm","publication_scope":null,"radio_technologies":[],"first_seen_at":"2026-09-16T11:04:53.932120+00:00","updated_at":"2026-10-16T09:34:55.609033+00:00","raw_metadata":{"source_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=1448","bibliography_source":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv"},"detail_synced_at":"2026-10-08T00:21:16.470181+00:00","versions":[{"release":"Rel-19","version":"19.0.0","meeting":"SA#109","upload_date":"2025-10-31","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-j00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-18","version":"18.0.0","meeting":"SA#103","upload_date":"2024-05-16","comment":"Automatic upgrade from previo...","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-i00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-17","version":"17.0.0","meeting":"SA#95-e","upload_date":"2022-04-07","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-h00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-16","version":"16.0.0","meeting":"SA#88-e","upload_date":"2020-07-21","comment":"","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.273/26273-g00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-15","version":"15.0.0","meeting":"SA#80","upload_date":"2018-06-22","comment":"","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.273/26273-f00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-14","version":"14.0.0","meeting":"SA#75","upload_date":"2017-03-17","comment":"","official_file_url":"https://www.3gpp.org/ftp//Specs/archive/26_series/26.273/26273-e00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-13","version":"13.0.0","meeting":"SA#70","upload_date":"2015-12-18","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-d00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-12","version":"12.0.0","meeting":"SA#65","upload_date":"2014-09-26","comment":"Automatic upgrade from previo...","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-c00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-11","version":"11.0.0","meeting":"SA#57","upload_date":"2012-09-21","comment":"Automatic upgrade from previo...","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-b00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-10","version":"10.0.0","meeting":"SA#51","upload_date":"2011-04-05","comment":"Automatic upgrade from previo...","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-a00.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-9","version":"9.0.0","meeting":"SA#46","upload_date":"2009-12-18","comment":"Automatic upgrade from previo...","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-900.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-8","version":"8.0.0","meeting":"SA#42","upload_date":"2008-12-18","comment":"Upgraded unchanged from Rel-7","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-800.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-7","version":"7.0.0","meeting":"SA#35","upload_date":"2007-03-29","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-700.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":22209,"version_status":null},{"release":"Rel-6","version":"6.5.0","meeting":"SA#32","upload_date":"2006-06-22","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-650.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":13197,"version_status":null},{"release":"Rel-6","version":"6.4.0","meeting":"SA#31","upload_date":"2006-03-31","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-640.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":28053,"version_status":null},{"release":"Rel-6","version":"6.3.0","meeting":"SA#30","upload_date":"2005-12-21","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-630.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":11758,"version_status":null},{"release":"Rel-6","version":"6.2.0","meeting":"SA#29","upload_date":"2005-10-12","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-620.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":21315,"version_status":null},{"release":"Rel-6","version":"6.1.0","meeting":"SA#28","upload_date":"2005-06-24","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-610.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":31997,"version_status":null},{"release":"Rel-6","version":"6.0.0","meeting":"SA#27","upload_date":"2005-04-01","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-600.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Rel-6","version":"2.0.0","meeting":"SA#27","upload_date":"2005-03-21","comment":"SP-050083","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-200.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-6","version":"0.5.4","meeting":"-","upload_date":"2004-06-17","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-054.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-6","version":"1.0.0","meeting":"SA#24","upload_date":"2004-06-14","comment":"SP-040425","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-100.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-6","version":"0.5.3","meeting":"-","upload_date":"2004-06-14","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/26_series/26.273/26273-053.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"},{"release":"Rel-6","version":"0.5.0","meeting":"-","upload_date":null,"comment":"","official_file_url":null,"source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":"pre-approval"}],"release_presence":[{"release":"Rel-6","first_version_date":"2004-06-14","latest_version_date":"2006-06-22","first_version":"0.5.0","latest_version":"6.5.0","version_count":11},{"release":"Rel-7","first_version_date":"2007-03-29","latest_version_date":"2007-03-29","first_version":"7.0.0","latest_version":"7.0.0","version_count":1},{"release":"Rel-8","first_version_date":"2008-12-18","latest_version_date":"2008-12-18","first_version":"8.0.0","latest_version":"8.0.0","version_count":1},{"release":"Rel-9","first_version_date":"2009-12-18","latest_version_date":"2009-12-18","first_version":"9.0.0","latest_version":"9.0.0","version_count":1},{"release":"Rel-10","first_version_date":"2011-04-05","latest_version_date":"2011-04-05","first_version":"10.0.0","latest_version":"10.0.0","version_count":1},{"release":"Rel-11","first_version_date":"2012-09-21","latest_version_date":"2012-09-21","first_version":"11.0.0","latest_version":"11.0.0","version_count":1},{"release":"Rel-12","first_version_date":"2014-09-26","latest_version_date":"2014-09-26","first_version":"12.0.0","latest_version":"12.0.0","version_count":1},{"release":"Rel-13","first_version_date":"2015-12-18","latest_version_date":"2015-12-18","first_version":"13.0.0","latest_version":"13.0.0","version_count":1},{"release":"Rel-14","first_version_date":"2017-03-17","latest_version_date":"2017-03-17","first_version":"14.0.0","latest_version":"14.0.0","version_count":1},{"release":"Rel-15","first_version_date":"2018-06-22","latest_version_date":"2018-06-22","first_version":"15.0.0","latest_version":"15.0.0","version_count":1},{"release":"Rel-16","first_version_date":"2020-07-21","latest_version_date":"2020-07-21","first_version":"16.0.0","latest_version":"16.0.0","version_count":1},{"release":"Rel-17","first_version_date":"2022-04-07","latest_version_date":"2022-04-07","first_version":"17.0.0","latest_version":"17.0.0","version_count":1},{"release":"Rel-18","first_version_date":"2024-05-16","latest_version_date":"2024-05-16","first_version":"18.0.0","latest_version":"18.0.0","version_count":1},{"release":"Rel-19","first_version_date":"2025-10-31","latest_version_date":"2025-10-31","first_version":"19.0.0","latest_version":"19.0.0","version_count":1}],"classifications":[],"work_items":[{"uid":1625,"acronym":"AMRWB","effective_acronym":"AMRWB","title":"Wideband Telephony Service - AMR","responsible_groups":["S4"],"release":"Rel-5","status":"Awaiting approval","wi_level":"Feature (1st level)","type":"Work Item","first_release":null,"last_release":null,"provenance_type":"official","source_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=1448","association_sources":[],"association_status":"historical_unverified"},{"uid":34023,"acronym":"AMRWB+","effective_acronym":"AMRWB+","title":"AMR-WB extension for high audio quality","responsible_groups":["S4"],"release":"Rel-6","status":"Awaiting approval","wi_level":"Feature (1st level)","type":"Work Item","first_release":"Rel-6","last_release":"Rel-6","provenance_type":"official","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20261012.zip","association_sources":["crdb"],"association_status":"source_tracked"},{"uid":34024,"acronym":"PSSrel6-Stage3","effective_acronym":"PSSrel6-Stage3","title":"Stage 3 for Packet Switched Streaming Services Rel-6","responsible_groups":["S4"],"release":"Rel-6","status":"Awaiting approval","wi_level":"Building Block (2nd level)","type":"Work Item","first_release":null,"last_release":null,"provenance_type":"official","source_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=1448","association_sources":[],"association_status":"historical_unverified"},{"uid":60110,"acronym":"TEI7","effective_acronym":"TEI7","title":"(Small) Technical Enhancements and Improvements for Rel-7","responsible_groups":["RP"],"release":"Rel-7","status":"Awaiting approval","wi_level":"Feature (1st level)","type":"Work Item","first_release":"Rel-7","last_release":"Rel-7","provenance_type":"parsed","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20261012.zip","association_sources":["crdb"],"association_status":"source_tracked"}],"change_requests":[{"portal_cr_id":null,"cr_number":"0019","revision":null,"category":"D","impacted_version":"6.5.0","target_release":"Rel-7","title":"Reference to users guide","wg_tdoc":"S4-070219","wg_status":"agreed","tsg_tdoc":"SP-070029","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":"0002","revision":null,"category":"F","impacted_version":"..","target_release":"Rel-6","title":"Remove unused code","wg_tdoc":"S4-050278","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":"0002","revision":"1","category":"F","impacted_version":"6.0.0","target_release":"Rel-6","title":"Remove unused code","wg_tdoc":"S4-050417","wg_status":"agreed","tsg_tdoc":"SP-050252","tsg_status":"approved","new_version":"6.1.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0003","revision":null,"category":"F","impacted_version":"6.0.0","target_release":"Rel-6","title":"Remove IF2 header in AMR-WB bitstream","wg_tdoc":"S4-050279","wg_status":"agreed","tsg_tdoc":"SP-050252","tsg_status":"approved","new_version":"6.1.0","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":"6.0.0","target_release":"Rel-6","title":"Prevent an access outside a buffer in Reconst_spect function","wg_tdoc":"S4-050280","wg_status":"agreed","tsg_tdoc":"SP-050252","tsg_status":"approved","new_version":"6.1.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0005","revision":null,"category":"F","impacted_version":"6.0.0","target_release":"Rel-6","title":"Decoder synchronization after frame erasures","wg_tdoc":"S4-050281","wg_status":"agreed","tsg_tdoc":"SP-050252","tsg_status":"approved","new_version":"6.1.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0006","revision":null,"category":"F","impacted_version":"6.0.0","target_release":"Rel-6","title":"Correction of mode switching using configuration file","wg_tdoc":"S4-050294","wg_status":"agreed","tsg_tdoc":"SP-050252","tsg_status":"approved","new_version":"6.1.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0007","revision":null,"category":"F","impacted_version":"6.0.0","target_release":"Rel-6","title":"Prevent encoding end of wave file information","wg_tdoc":"S4-050295","wg_status":"agreed","tsg_tdoc":"SP-050252","tsg_status":"approved","new_version":"6.1.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0008","revision":null,"category":"F","impacted_version":"6.0.0","target_release":"Rel-6","title":"Correction of library function for 3GP file format","wg_tdoc":"S4-050314","wg_status":"agreed","tsg_tdoc":"SP-050252","tsg_status":"approved","new_version":"6.1.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0009","revision":null,"category":"F","impacted_version":"6.0.0","target_release":"Rel-6","title":"Support for input files with sampling frequency other than 48 kHz","wg_tdoc":"S4-050416","wg_status":"agreed","tsg_tdoc":"SP-050252","tsg_status":"approved","new_version":"6.1.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0001","revision":null,"category":"F","impacted_version":"6.0.0","target_release":"Rel-6","title":"Prevent an access outside a buffer when simulating frames erasure","wg_tdoc":"S4-050277","wg_status":"agreed","tsg_tdoc":"SP-050252","tsg_status":"approved","new_version":"6.1.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0011","revision":null,"category":"F","impacted_version":"6.1.0","target_release":"Rel-6","title":"Correction to threshold value in bandwidth extension","wg_tdoc":"S4-050510","wg_status":"agreed","tsg_tdoc":"SP-050425","tsg_status":"approved","new_version":"6.2.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0012","revision":null,"category":"F","impacted_version":"6.1.0","target_release":"Rel-6","title":"Removal of copyright statements and unused files","wg_tdoc":"S4-050511","wg_status":"agreed","tsg_tdoc":"SP-050425","tsg_status":"approved","new_version":"6.2.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0013","revision":null,"category":"F","impacted_version":"6.2.0","target_release":"Rel-6","title":"Correction to scaling of decimation filter memory","wg_tdoc":"S4-050738","wg_status":"agreed","tsg_tdoc":"SP-050785","tsg_status":"approved","new_version":"6.3.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0014","revision":null,"category":"F","impacted_version":"6.3.0","target_release":"Rel-6","title":"Correction to end-of-file logic and initialisation in AMR-WB modes","wg_tdoc":"S4-060017","wg_status":"agreed","tsg_tdoc":"SP-060012","tsg_status":"approved","new_version":"6.4.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0015","revision":null,"category":"F","impacted_version":"6.3.0","target_release":"Rel-6","title":"Correction to unnecessary look ahead in encoder","wg_tdoc":"S4-060018","wg_status":"agreed","tsg_tdoc":"SP-060012","tsg_status":"approved","new_version":"6.4.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0016","revision":null,"category":"F","impacted_version":"6.3.0","target_release":"Rel-6","title":"Correction to memory initialization and memory overwrite when switching between AMR-WB and AMR-WB+ modes","wg_tdoc":"S4-060019","wg_status":"agreed","tsg_tdoc":"SP-060012","tsg_status":"approved","new_version":"6.4.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0017","revision":null,"category":"F","impacted_version":"6.4.0","target_release":"Rel-6","title":"Correction to switching between AMR-WB and AMR-WB+ modes","wg_tdoc":"S4-060276","wg_status":"agreed","tsg_tdoc":"SP-060353","tsg_status":"approved","new_version":"6.5.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0018","revision":null,"category":"F","impacted_version":"6.4.0","target_release":"Rel-6","title":"Correction to default stereo codec configurations","wg_tdoc":"S4-060277","wg_status":"agreed","tsg_tdoc":"SP-060353","tsg_status":"approved","new_version":"6.5.0","source_url":"ftp://ftp.3gpp.org/Information/Databases/Change_Request/CRDB_20260715.zip","detail_synced_at":null},{"portal_cr_id":null,"cr_number":"0010","revision":null,"category":"F","impacted_version":"6.1.0","target_release":"Rel-6","title":"Correction to frame erasure concealment","wg_tdoc":"S4-050509","wg_status":"agreed","tsg_tdoc":"SP-050425","tsg_status":"approved","new_version":"6.2.0","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/26.273/relationship-evidence"}}