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?
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