[Freeswitch-users] Quiet packets on non-bypass media calls

[Anthony Minessale]

The packets are probably late and being dropped and replaced with silence.
You can try 2 things:

1) run the app cng_plc before bridge and in execute_on_originate on b legs.
2) enable the jitter buffer at a small value by setting jitterbuffer_msec=60



On Thu, Feb 10, 2011 at 12:15 PM, Jerry Richards
<jerry.richards at teotech.com> wrote:
> Hello All,
>
>
>
> All of our Freeswitch installations transmit occasional quiet packets in
> calls when the media is not bypassed.  One case that is easy to analyze is
> two phones on a meet-me conference.   Packets containing a continuous tone
> can be seen being transmitted from a phone to Freeswitch with Wireshark.
> The media stream to the other phone from Freeswitch has occasional 20
> millisecond packets with near zero amplitude.  This is also seen on PRI
> calls and in voicemail recordings.  It looks like Freeswitch is ignoring a
> packet that it received.  The jitter, sequence number, and timestamps of all
> packets are good.  This occurrence rate is similar on switches with only two
> phones and on more heavily loaded switches.  The rate can be anywhere
> between no occurrences in an hour to 20 in a minute.
>
>
>
> The drop outs are easy to detect when a continuous tone is being sent by one
> phone.  The drop outs are more difficult to detect in normal conversation.
> The servers have fast quad core processors and 4 to 6 gigabytes of RAM.  The
> latest builds of Freeswitch and 32 or 64 bit versions of Centos 5.3 are
> used.
>
>
>
> Does anyone know what might cause this?
>
>
>
> Thanks,
>
> Jerry
>
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>



-- 
Anthony Minessale II

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