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ETSI TS 132 272
M00003755
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ETSI TS 132 272 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Telecommunication management; Charging management; Push-to-talk over Cellular (PoC) charging (3GPP TS 32.272 version 11.1.1 Release 11)
standard by European Telecommunications Standards Institute, 08/01/2014
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