[asterisk-bugs] [JIRA] (ASTERISK-26581) codec_opus: Poor quality MOH when using DTX or FEC

[Joshua Colp (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-26581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joshua Colp updated ASTERISK-26581:
-----------------------------------

    Assignee: Sam For
      Status: Waiting for Feedback  (was: Open)

I've tested various versions of Asterisk as well as codec_opus with both a softphone and hardphone and have not been able to reproduce this problem. Can you please try the latest version and if the issue still exists provide the full console output with SIP debug as well as information about the endpoint in use.

> codec_opus: Poor quality MOH when using DTX or FEC
> --------------------------------------------------
>
>                 Key: ASTERISK-26581
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26581
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Codecs/codec_opus
>    Affects Versions: 13.12.1
>         Environment: Ubuntu 14.04. Asterisk 13.12.1
>            Reporter: Sam For
>            Assignee: Sam For
>         Attachments: opus_dtx_fec10p.wav, opus_fec10p.wav, opus.wav
>
>
> If FEC with 10% packet loss OR DTX is enabled for Opus then MusicOnHold will sound extremely poor.
> Sounds recordings are attached to this ticket.
> These are the three codec settings that were tested:
> DTX & FEC at 10%
> [opus24]
> type=opus
> fec=yes
> packet_loss=10
> dtx=yes
> cbr=yes
> bitrate=24000
> complexity=8
> FEC at 10%
> [opus24]
> type=opus
> fec=yes
> packet_loss=10
> dtx=no
> cbr=yes
> bitrate=24000
> complexity=8
> DTX & FEC disabled
> [opus24]
> type=opus
> fec=no
> packet_loss=0
> dtx=no
> cbr=yes
> bitrate=24000
> complexity=8



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