[asterisk-bugs] [JIRA] (ASTERISK-24127) rtpkeepalive sometimes sends comfort noise rtp packets unnecessarily

Rusty Newton (JIRA) noreply at issues.asterisk.org
Mon Jul 28 09:36:58 CDT 2014


    [ https://issues.asterisk.org/jira/browse/ASTERISK-24127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=220967#comment-220967 ] 

Rusty Newton commented on ASTERISK-24127:
-----------------------------------------

Thanks for the note. If I can't reproduce this easily I'll close it out as Cannot Reproduce since you said you can't help isolate it any further.

Can you provide any other configuration or files that may relate to reproduction of the issue? Perhaps the configuration of the SIP peers involved and your rtp.conf ?

> rtpkeepalive sometimes sends comfort noise rtp packets unnecessarily
> --------------------------------------------------------------------
>
>                 Key: ASTERISK-24127
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24127
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_rtp_asterisk
>    Affects Versions: 11.11.0
>            Reporter: alexr1
>            Severity: Minor
>
> I was experiencing minor audio clipping/interruptions and when I did a packet capture I found an RTP Comfort Noise packet corresponding with each interruption (PT=comfort noise). An easy fix is to disable rtpkeepalive.
> In sip.conf, rtpkeepalive specifies the number of seconds of no rtp activity before sending a comfort noise rtp packet as a keep alive. In some cases, Asterisk sends one in the middle of rtp streams (It seems to send it to both parties simultaneously, too).
> directmedia=no, so all rtp traffic is being handled by both asterisk servers.
> Interruptions every 10 seconds:
> AST11 Playing MOH <alaw> AST11 <alaw> SIP Phone
> No Interruptions when transcoding takes place:
> AST11 Playing MOH <alaw> AST11 <ulaw> SIP Phone
> AST11 Playing MOH <ulaw> AST11 <alaw> SIP Phone
> Unfortunately I don't have time to help further isolate the issue on our production system - mainly posting this so that someone else can find it if they're looking for a solution!



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