[Freeswitch-users] RTP Audio Stream Initialise

[Callum Guy]

I have just checked and although my test configuration recorded an empty
file the packets captured with tcpdump can be successfully played back in
Wireshark. The audio in the capture is exactly as I would have expected the
recording to be.

Are we suggesting that there is a bug of some description here? Is there
anything else I can test to confirm?

To provide some clarity on my setup here is a list of what i have:

   1. Registered Linksys SPA941 on OpenSIPS
   2. Direct call from OpenSIPS to FreeSWITCH
   3. XML dialplan with ESL outbound connection to socket server
   4. Socket server issues SendMsg answer
   5. Socket server issues SendMsg park
   6. Socket client intercepts CHANNEL_PARK
   7. Socket client issues SendMsg record (filepath/test.wav 15 200)



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Callum Guy
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On 1 October 2013 15:33, Michael Jerris <mike at jerris.com> wrote:

> 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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