Hello, It missed in this documentation[1] the entry: max_bandwidth with possible values narrow, medium, wide, super_wide, full (default full) * [1] https://wiki.asterisk.org/wiki/display/AST/Codec+Opus And there is a typo in the asterisk code source samples. configs/samples/codecs.conf.sample (max_bandwitdth to max_bandwidth) Sylvain