Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Inband Tandem Free Operation (TFO) of speech codecs; Service description; Stage 3 (V15.0.0; 3GPP TS 28.062 version 15.0.0 Release 15; Includes
The present document contains the service description for the in-band signalling protocol for the support of Tandem Free Operation of the Half Rate@ Full Rate@ Enhanced Full Rate@ Adaptive Multi Rate narrowband and Adaptive Multi Rate Wide-Band speech codec types in GSM and GSM-evolved 3G systems.