[Scott Lowrey <slowrey@xxxxxxxxxxx>]

You're asking the same questions.  Unless you're a competent C/C++ 
programmer, there's no easy way to convert a PCM file into RTP - not 
that I know of.

The tool you need to do exactly what you want is IxVoice and the RTP 
Test Library.  It can send a pre-recorded wav file with a known PESQ 
score across a network and back to itself.  It will record the return 
stream as a wav which you can then compare to the original for 
determining QoV degradation.

I've seen this product work and it's impressive.  It is not free, though.

http://ixiacom.com/products/voice_testing/vt_display.php?skey=vt_ixv_rtp&section=voictest

Janice Lau wrote:

> Perhaps i should ask in another way....
>
>
> 1) I have a standard voice file .wav on hand and i would like to send
> it to a destination port using rtpplay and thus capture the packets
> using Ethereal. May i know is there any way/tool that can help me to
> convert the .wav voice file to .rtp file with all the header
> information attached?
>  
>
> 2) or is there any way i can directly send the .wav voice file to a
> specified UDP port and then capture the network traffic using
> Ethereal?
>
> Beside the no1 and 2 as asked above, is there any others better
> /smarter/more appropriate way for me to send a standard .wav file ( in
> PCM coding) to any other PC (IP's port ) and thus i can capture it
> using Ethereal in order to measure the call quality. The motive is
> that..i need a reference file ( the original .wav file) and a degraded
> file ( the one sent to specified port) so that i am able to measure
> the call quality using PESQ algorithm.
>
> THank you for any of your help and suggestions or comments.
>
> HAve a nice day.
>
> regards,
> Janice
>
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