[Freeswitch-users] RTP Audio Stream Initialise

[Michael Jerris]

Your saying you see media flowing in both directions even when the record doesn't work, and when you play the stream in wireshark, there is media in that stream, and its not silent?

On Oct 1, 2013, at 10:23 AM, Callum Guy <callum.guy at x-on.co.uk> wrote:

> I'm calling in from a Linksys SPA941 and I will be the only user on the FreeSWITCH server. I have been using tcpdump to capture my RTP traffic using the following command:
> 
> tcpdump -i any -n dst portrange 10000-50000
> 
> I configured two test scripts as below:
> 
> Script 1: Answer call, generate 1000ms silence (as above) and then record. 
> This showed a steady stream of UDP data throughout the call and resulted in a recording.
> 
> Script 2: Answer call, sleep for 1 second and then record. 
> This showed a steady stream of UDP data throughout the call but resulted in a blank recording.
> 
> This is interesting and indicates to me that there is probably something that the FreeSWITCH file play operation is doing (even when its a silence stream) that is not carried out by the record application. I would expect that its unusual for a telephony application to want to answer and record without any play operations first.
> 
> Thanks again,
> 
> Callum

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