{"id":4933,"number":"04.57","type":"TS","title":"GSM Cordless Telephony System (CTS), (Phase 1) CTS CTS supervising system Layer 3 Specification","series":4,"status":"Under change control","initial_release":"Release 1998","primary_group":"C1","secondary_groups":[],"portal_id":219,"portal_url":"https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=219","dynareport_url":"https://www.3gpp.org/dynareport/0457.htm","publication_scope":null,"radio_technologies":[],"first_seen_at":"2026-09-16T11:04:47.289077+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=219","bibliography_source":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv"},"detail_synced_at":"2026-10-07T22:06:33.736531+00:00","versions":[{"release":"Release 1998","version":"7.0.3","meeting":"-","upload_date":"2000-09-05","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/04_series/04.57/0457-703.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Release 1999","version":"8.0.1","meeting":"-","upload_date":"2000-08-29","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/04_series/04.57/0457-801.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Release 1998","version":"7.0.2","meeting":"-","upload_date":"2000-05-22","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/04_series/04.57/0457-702.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Release 1999","version":"8.0.0","meeting":"-","upload_date":"2000-02-16","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/04_series/04.57/0457-800.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":null,"version_status":null},{"release":"Release 1998","version":"7.0.1","meeting":"-","upload_date":"1999-05-26","comment":"","official_file_url":"https://www.3gpp.org/ftp/Specs/archive/04_series/04.57/0457-701.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/04_series/04.57/0457-700.zip","source_url":"ftp://ftp.3gpp.org/Information/Databases/3GPPBibliography.csv","portal_version_id":10147,"version_status":null}],"release_presence":[{"release":"Release 1998","first_version_date":"1999-02-12","latest_version_date":"2000-09-05","first_version":"7.0.0","latest_version":"7.0.3","version_count":4},{"release":"Release 1999","first_version_date":"2000-02-16","latest_version_date":"2000-08-29","first_version":"8.0.0","latest_version":"8.0.1","version_count":2}],"classifications":[],"work_items":[],"change_requests":[{"portal_cr_id":null,"cr_number":"0000","revision":null,"category":"F","impacted_version":"..","target_release":"R98","title":"CTS supervising system layer 3","wg_tdoc":null,"wg_status":"agreed","tsg_tdoc":"P-99-191","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}],"relationships":[],"relationship_release_evidence_summary":[],"relationship_release_evidence":[],"relationship_release_evidence_meta":{"total":0,"returned_count":0,"limit":100,"truncated":false,"href":"/api/specs/04.57/relationship-evidence"}}