[asterisk-bugs] [JIRA] (ASTERISK-29579) codec_opus: 16000 not WB, 24000 not SWB.

[Alexander Traud (JIRA)]

Alexander Traud created ASTERISK-29579:
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             Summary: codec_opus: 16000 not WB, 24000 not SWB.
                 Key: ASTERISK-29579
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-29579
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Codecs/codec_opus
    Affects Versions: 18.6.0, 16.20.0
            Reporter: Alexander Traud
            Severity: Major


While debugging the [ToC byte|https://tools.ietf.org/html/rfc6716#section-3.1] in the RTP media stream of the audio codec Opus Codec, I noticed, the Digium/Sangoma module sends Mediumband although the caller stated to support Wideband in its SDP. I overwrote this via the configuration file {{codecs.conf}} but the result was not good audio either. Then, I noticed that the documentation states ([Blog|https://www.asterisk.org/?p=1243], [Wiki|https://wiki.asterisk.org/wiki/display/AST/Codec+Opus]):
* {{max_playback_rate=16000}} to be Mediumband (mb) not Wideband (wb),
* {{max_playback_rate=24000}} to be Wideband (wb) not Super Wideband (swb).

Because the module is closed source, I can only guess that is the cause for my seen issue. In [RFC 7587|https://tools.ietf.org/html/rfc7587#section-2], I read table 1 differently. If we disagree on that, who is asking upstream in the [Opus mailing list|https://lists.xiph.org/mailman/listinfo/opus]?



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