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ETSI TS 123231-V18.0.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); SIP-I based circuit-switched core network; Stage 2 (3GPP TS 23.231 version 18.0.0 Release 18)
Standard published on 14.5.2024
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ETSI TS 123231-V19.0.0
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); SIP-I based circuit-switched core network; Stage 2 (3GPP TS 23.231 version 19.0.0 Release 19)
Standard published on 15.10.2025
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ETSI TS 123231-V8.0.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); SIP-I based circuit-switched core network; Stage 2 (3GPP TS 23.231 version 8.0.0 Release 8)
Standard published on 17.10.2008
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ETSI TS 123231-V8.1.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); SIP-I based circuit-switched core network; Stage 2 (3GPP TS 23.231 version 8.1.0 Release 8)
Standard published on 17.10.2008
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ETSI TS 123231-V8.2.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; SIP-I based circuit-switched core network; Stage 2 (3GPP TS 23.231 version 8.2.0 Release 8)
Standard published on 9.1.2009
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ETSI TS 123231-V8.3.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); SIP-I based circuit-switched core network; Stage 2 (3GPP TS 23.231 version 8.3.0 Release 8)
Standard published on 21.4.2009
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ETSI TS 123231-V8.4.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); SIP-I based circuit-switched core network; Stage 2 (3GPP TS 23.231 version 8.4.0 Release 8)
Standard published on 17.6.2009
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ETSI TS 123231-V9.0.0
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Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); SIP-I based circuit-switched core network; Stage 2 (3GPP TS 23.231 version 9.0.0 Release 9)
Standard published on 4.2.2010
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ETSI TS 123234-V10.0.0
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Universal Mobile Telecommunications System (UMTS); LTE; 3GPP system to Wireless Local Area Network (WLAN) interworking; System description (3GPP TS 23.234 version 10.0.0 Release 10)
Standard published on 31.3.2011
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ETSI TS 123234-V11.0.0
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Universal Mobile Telecommunications System (UMTS); LTE; 3GPP system to Wireless Local Area Network (WLAN) interworking; System description (3GPP TS 23.234 version 11.0.0 Release 11)
Standard published on 25.9.2012
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