tshark is quite good at analyzing the SIP and RTP packet captures. But it's rather CPU-intensive, so it's better to launch it after the call in nice mode. On Mon, Jan 18, 2016 at 1:58 AM, Dave Horton <dave@dchorton.com> wrote:
Well, my issue is that ‘complete silence’ could mean no RTP packets at all, or it could mean RTP packets arriving with all zeros, and I need to distinguish between the two scenarios. I read the recent issue regarding detecting speaker events in a conference to determine silence, so I suppose I instead of bridging I could put the two legs into conference and look for the lack of a ‘start talking’ event within some number of seconds. But I would prefer to sick with bridging the legs if possible. I am unclear about how the recording is going to look in the case where there is no RTP coming in, and whether I could really inspect the recording to know for sure whether or not I am receiving packets….
Dave
On Jan 17, 2016, at 5:29 PM, Stanislav Sinyagin <ssinyagin@gmail.com> wrote:
you can, for example, start a recording within a running session, run it for 10 seconds, and then build a histogram using SOX. You would then easily distinguish a complete silence from speech.
Also at the end of a call, you can get the RTP statistics in channel variables before it gets destroyed, so you can extract the number of RTP packets received.
On Sun, Jan 17, 2016 at 11:17 PM, Dave Horton <dave@dchorton.com> wrote:
I have a need to bridge two channels together and then somehow verify that I am getting RTP packets from both directions. The need stems from a desire to detect a one-way audio situation in rare nat’ed scenarios where signaling gets established but one party may have restrictive firewall rules preventing his/her RTP stream from reaching the FS endpoint. Any ideas? _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
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