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About This Item
Document History
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ETSI TS 123 121
Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Architecture Requirements for release 99 (3GPP TS 23.121 version 3.6.0 Release 1999)- Most Recent
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ETSI TS 123 121
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Architectural Requirements for Release 1999 (3GPP TS 23.121 version 3.5.1 Release 1999)- Historical Version
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ETSI TS 123 121
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Architectural Requirements (3GPP TS 23.121 version 3.4.0 Release 1999)- Historical Version
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ETSI TS 123 121
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Architectural Requirements (3G TS 23.121 version 3.3.0 Release 1999)- Historical Version
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ETSI TS 123 121
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Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Architectural Requirements (3G TS 23.121 version 3.2.0 Release 1999)- Historical Version