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2001ETSI TS 127 103-2001 Universal Mobile Telecommunications System (UMTS); Wide Area Network Synchronization Standard 3GPP TS 27.103 Version 4.0.0 Release 4
2000ETSI TS 127 103-2000 Universal Mobile Telecommunications System (UMTS); Wide Area Network Synchronisation Standard 3G TS 27.103 Version 3.0.0 Release 1999