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ETSI TS 123 153
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ETSI TS 123 153 Universal Mobile Telecommunications System (UMTS); Out of Band Transcoder Control; Stage 2 (3GPP TS 23.153 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 04/01/2017
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Full Description
ETSI TS 123 153 specifies the stage 2 description of the Out-of-Band Transcoder Control for speech services. Itdescribes the principles and procedures to support Transcoder Free Operation, Tandem Free Operation and theinterworking between TrFO and TFO. Transcoder at the edge is also part of the present document.The present document specifies functions, procedures and information which apply to GERAN Iu mode. However,functionality related to GERAN Iu mode is neither maintained nor enhanced.