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ETSI TS 134 229-3
M00000616
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ETSI TS 134 229-3 Universal Mobile Telecommunications System (UMTS); LTE; IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); User Equipment (UE) conformance specification; Part 3: Abstract test suite (ATS) (3GPP TS 34.229-3 version 15.6.1 Release 15)
standard by European Telecommunications Standards Institute, 11/01/2020
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