[Freeswitch-users] RTP (re)generation issue

Henning Heedfeld heedfeld at gmail.com
Thu Jul 25 06:10:30 UTC 2019

Hi Dmitry,

it seems to be a similar issue to this:
https://freeswitch.org/jira/browse/FS-11658 <https://freeswitch.org/jira/browse/FS-11658>


> Am 24.07.2019 um 11:19 schrieb Dmitriy Borisov <borik.internet at gmail.com>:
> Hello! Need your help!
> I have next scheme of RTP processing:
> rtpengine <-> caller freeswitch <-> robot freeswitch.
> And next scheme of call:
> 1. Caller make an outgoing call (1) via rtpengine
> 2. On answer caller make an outgoing call (2) to robot and bridge it with call (1)
> I have a problem with RTP stream rtpengine -> caller freeswitch -> robot freeswitch
> I see in a pcap that RTP packets goes from rtpengine to caller freeswitch without significant jitter. But sometimes caller freeswitch make a ~200ms length pause in RTP transmitting. After pause caller freeswitch renew transmitting of RTP packets, and first packet have a marker bit set. As I know from RFC 3551, marker bit means that stream starts after pause of transmitting.
> This pauses are very harmful for me becuse them break speech recognition process of robot freeswitch side.
> I use PCMA codec with ptime=20 and no any virtualization of caller freeswitch hardware.
> Do you have any thinks about reason of this pauses and how can I remove them?
> -- 
> With best regards
>    Dmitry Borisov
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