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Thread: Qualcomm VoLTE audio codec preference

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    Default Qualcomm VoLTE audio codec preference

    Does anybody have knowledge of, or access to materials that explain, how to configure audio codec preference order on older Qualcomm modems (specifically for VoLTE)?

    I have MSM8994-based UE, and /efsprofiles/overideconfig is not used by this modem firmware. Neither is NV 73690 (qipcall_audio_codec_list).

    I wonder if NV 65958 (voip_prfrd_codec) would be appropriate location for this config, but I cannot find any documentation on it.

    I want to order AMR-WB above AMR. Right now, for outgoing call, UE currently advertises both AMR and AMR-WB in the SDP of SIP INVITE, but AMR is higher priority, so it gets picked. Also for incoming call, even when AMR-WB is included in SDP media types from network INVITE, UE picks AMR instead.

    Thanks for any help!

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