[Freeswitch-users] RTP ptime changed multiple times

Brian West brian at freeswitch.com
Fri Sep 16 21:37:20 UTC 2022

Tell the other side to fix their brokenness maybe?  How did you try setting
the flag?


On Fri, Sep 16, 2022 at 4:28 PM Jose Fco. Irles DurĂ¡ <josefu at gmail.com>

> Hello, I have a problem with some calls where the rtp stream from the
> other side changes the rtp ptime multiple times.
> I make a call with the sdp line "a=ptime:20" but the initial rtp comes
> with 40ms ptime.
> FreeSWITCH detects it and changes the ptime to 40ms and all works ok.
> Later in the conversation, without any re-invite, the rtp stream changed
> to 20ms. At this moment, FreeSWITCH does not detect the change and the
> audio sended by FreeSWITCH to the other legs is choppy.
> I think that the problem is on the other side, but the other side is a big
> operator and always this is a problem to solve issues.
> I tried to set "rtp_media_autofix_timing", but if I set this property, the
> first part of the conversation is discarded (ptime at 40ms, silence in my
> phone) and later I can listen the audio (when the ptime=20ms).
> Is there any solution for this?
> Best regards
> --
> Jose Fco. Irles DurĂ¡
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