[asterisk-users] Measuring Jitter in Asterisk

[Douglas Garstang]

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Alex Balashov
> Sent: Friday, August 03, 2007 2:12 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Measuring Jitter in Asterisk
> 
> On Fri, 3 Aug 2007, Jared Smith wrote:
> 
> > If the provider sends RTCP packets, you could simply watch for those
and
> > write the data to a database.  (I think modern versions of Asterisk
even
> > allow you to get to the data from the dialplan, and possibly from
the
> > Manager Interface.)  That at least gives you some per-call
statistics.
> 
>    If you want to go that route, just yank those packets out of a
> constantly running tcpdump process with the right filters, and then
> process them with a script and load that data into a DB.

Alex, ok... so if I wanted to measure jitter to an ITSP I could run
tcpdump to it, and parse the output. According to
http://wiki.wireshark.org/RTP_statistics, I'd have to compare the
timestamp in each RTP packet with the timestamp shown by tcpdump. Looks
kinda complicated.