How to force a high bandwidth for Opus?

I have been able to change the default audio codec to OPUS.

But I have not been able to get a higher bandwidth for audio. With an audio-only stream the bandwidth is very low, which is nice with voice. But I know that OPUS should be fairly good even for music.

I would like to force the system to use a higher bandwidth.

The stream goes through Licode server (no peer-to-peer). The local network bandwidth should be sufficient for high quality. Giving the parameter maxAudioBW does not seem to have any effect. It seems to be the case that it is not even used (used only for peer-to-peer). What am I missing? Or what files should I change in order to get higher bandwidth active?

Any help appreciated.

Best regards,