1 Scope

26.2023GPPAdaptive Multi-Rate - Wideband (AMR-WB) speech codecInterface to Iu, Uu and NbRelease 17Speech codec speech processing functionsTS

The present document specifies the mapping of the AMR wideband generic frame format (3GPP TS 26.201) to the Iu Interface (3GPP TS 25.415), the Uu Interface and the Nb Interface (3GPP TS 29.415) of a BICC-based circuit switched core network. It further specifies the mapping of PCM 64 kBit/s (ITU-T G.711) coded speech to the Nb Interface of a BICC-based circuit switched core network.

The mapping of the AMR wideband generic frame format to RTP for the A-Interface and the Nb Interface for a SIP-I -based circuit switched core network is described in TS 26.102.