Wireshark-users: [Wireshark-users] Frame details

From: Raghul Prasanna <raghul82@xxxxxxxxxxx>
Date: Thu, 5 Mar 2009 21:45:12 +0000 (GMT)
Hi All,
 
I am new to wireshark.Whenever I capture SIP/RTP packets I see Time delta from previous captured frame, time delta from previous displayed frame and time since ref or first frame in FRAME.
 
What do these mean and can this be useful to calculate delay? PLease advice.
 
Thanks,
Raghul