We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
ETSI - European Telecommunication Standard Institute(ETSI) produces globally-applicable standards for information and telecommunication technologies (ICT) including land, mobile, radio, converged, broadcast and internet technologies.
Digital cellular telecommunications system (Phase 2+) (GSM); Network Management (NM) procedures and messages on the A-bis interface (GSM 12.21 version 5.0.0 Release 1996)
Standard published on 31.5.2000
Selected format:Digital cellular telecommunications system (Phase 2+); Network Management (NM) procedures and messages on the A-bis interface (3GPP TS 12.21 version 6.0.0 Release 1997)
Standard published on 18.6.2002
Selected format:Digital cellular telecommunications system (Phase 2+); Network Management (NM) procedures and messages on the A-bis interface (3GPP TS 12.21 version 7.0.0 Release 1998)
Standard published on 18.6.2002
Selected format:Digital cellular telecommunications system (Phase 2+); Network Management (NM) procedures and messages on the A-bis interface (3GPP TS 12.21 version 8.0.0 Release 1999)
Standard published on 18.6.2002
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Unstructured Supplementary Service Data (USSD) - Stage 1 (GSM 02.90 version 6.0.0 Release 1997)
Standard published on 29.4.1999
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Unstructured Supplementary Service Data (USSD) - Stage 1 (GSM 02.90 version 7.0.0 Release 1998)
Standard published on 13.8.1999
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Application of the Base Station System Application Part (BSSAP) on the E-interface (GSM 09.08 version 6.0.0 Release 1997)
Standard published on 30.4.1999
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Application of the Base Station System Application Part (BSSAP) on the E-interface (GSM 09.08 version 7.0.0 Release 1998)
Standard published on 30.7.1999
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Application of the Base Station System Application Part (BSSAP) on the E-interface (GSM 09.08 version 7.2.0 Release 1998)
Standard published on 31.12.1999
Selected format:Digital cellular telecommunications system (Phase 2+) (GSM); Application of the Base Station System Application Part (BSSAP) on the E-interface (GSM 09.08 version 8.0.0 Release 1999)
Standard published on 29.3.2000
Selected format:Latest update: 2026-01-21 (Number of items: 2 257 297)
© Copyright 2026 NORMSERVIS s.r.o.