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M00002895
New product
ETSI TS 134 229-1
Universal Mobile Telecommunications System (UMTS); LTE; Internet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); User Equipment (UE) conformance specification; Part 1: Protocol conformance specificationstandard by European Telecommunications Standards Institute, 01/01/2017
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