You can't get it directly.
Unless you have a capture on both ends and synchronised clocks for both captures. You may then compare send and receive times.
But there's another way:
Actually, most of the time, RTP endpoints do measure the round-trip delay while in conversation and exchange that information via RTCP.
So you can watch for RTCP packets in your captures and extract the info from there.
See RFC 3550.
Regards,
Lars Ruoff
________________________________
From: wireshark-users-bounces@xxxxxxxxxxxxx [mailto:wireshark-users-bounces@xxxxxxxxxxxxx] On Behalf Of Salvatore Frandina
Sent: dimanche 21 mars 2010 11:07
To: wireshark-users@xxxxxxxxxxxxx
Subject: [Wireshark-users] How calculate dealy VoIP communication
Hi,
I know how to calculate the bandwidth, jitter and loss packets of RTP traffic. How can I estimate the mean delay?
Thank
--
_______________________________________
Salvatore Frandina
website: http://frandinas.altervista.org
mail: salvatore.frandina@xxxxxxxxx
_______________________________________
