Hi all,
I’m trying to use the RTP statistics tool to analyse a
VoIP stream over Wifi. I found that the RTP statistics tool calculated the RTP
packet loss rate based on: the number of retransmitted RTP packets / the total
number of captured RTP packets. Since the trace was captured over the air, RTP
packets got retransmitted from time to time at the 802.11 link, but it didn’t
necessarily mean the retransmitted RTP packets got lost eventually. I think the
correct way to determine a RTP packet loss case over Wifi is to see if a RTP
packet gets acked at 802.11 eventually. Does any plug-in/update of Wireshark
support this?
Also, the RTP statistics tool seems not to be able to recognize
UDP checksum error packets, as a corrupted RTP packet with a wrong sequence
number caused all the following correct RTP packets counted as sequence errors.
Is this a bug?
Kind regards,
Ji