Sakri Ahmad wrote:
> Recently I store and tried ethereal prog on my windows base pc.
> I need to analyzed the captured data for VoIP. This means I need to find
the
> % of Loss, Jitter, delay etc.
> As first step I need to develope a program for this. I planned to used
> V.basic for this. The prob. is
> 1) I don't how to save to captured data into the format that V.basic can
> understand.
> 2) Not sure what is the best program to develope this analyzer
Please note that Ethereal has some functionality that might be useful for
you.
The RTP Analysis can calculate delay and jitter (for each packet compared to
previous packet in the stream).
Select a RTP packet and use Analyze/Statistics/RTP Streams/Analyse...
or use Analyze/Statistics/RTP Streams/Show all.. and then select a stream
and use Analyse button.
It's even possible to get the output in a Comma Separated Value file with
"Save as CSV ..." so
that you could prepare e.g. some average/max/min calculations in a separate
application etc. if you want that, and
maybe prepare some graphs just by reading in the file in a spreadsheet
program and asking it to make some graphs out of the statistics.
I also had some ideas of that it might be good to add Min, Max, Average,
Standard Deviation calculations directly in the RTP Analysis
for jitter, delay, packet sizes and so on (Max Delay is already there).
But I'm not sure what things should be really useful to have and what other
similar programs have.