Is cng_plc and execute_on_originate documented in the Wiki or somewhere? -----Original Message----- From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Anthony Minessale Sent: Thursday, February 10, 2011 10:39 AM To: FreeSWITCH Users Help Cc: Bob Greaby Subject: Re: [Freeswitch-users] Quiet packets on non-bypass media calls 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@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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