[asterisk-bugs] [JIRA] (ASTERISK-21246) [patch] use of rtpkeepalive results in empty RTP packets with a marker bit set, plus a ULAW payload instead of CN

Michael L. Young (JIRA) noreply at issues.asterisk.org
Mon May 6 10:37:38 CDT 2013


     [ https://issues.asterisk.org/jira/browse/ASTERISK-21246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael L. Young updated ASTERISK-21246:
----------------------------------------

    Affects Version/s:     (was: 1.8.19.0)
                           (was: 1.8.18.0)
                           (was: 1.8.17.0)
                       11.3.0
    
> [patch] use of rtpkeepalive results in empty RTP packets with a marker bit set, plus a ULAW payload instead of CN
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-21246
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21246
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/General, Resources/res_rtp_asterisk
>    Affects Versions: 1.8.20.1, 11.3.0
>         Environment: ubuntu 10.04
>            Reporter: Peter Katzmann
>            Assignee: Michael L. Young
>         Attachments: asterisk-21246-rtp-cng-payload-error_1.8.diff, asterisk-21246-rtp-cng-payload-error_1.8_v2.diff, asterisk.conf.tar.gz, CallWithTranscoding, codecchange.0, codecchange.2, codecchange-24032013.bz2, codecchange-24032013-udp.pcap, codecchange.3, codecchange-filtered.pcap.gz, codecchange-patched, codecchange-patched.pcap, codecchange-patched_v2.txt, codecchange-patch-v2.pcap, filtered1512-2-leg.pcap, filtered1512-2.pcap, myDebugLog, myDebugLog, negiot-switch, vanilla-trace.txt, ws-trace.txt
>
>
> See attached traces
> During call asterisk switches the negotiated codec (alaw) in the rtp to ulaw.
> If there is no renegotiation (like on my snom 720 sometimes), the user has a audible distortion.

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