[RTPproxy Users] About Jitter

[Ronald Voermans]

Dear listusers,

I've been running wireshark on the server which has installed OpenSer and RTPProxy. After doing a trace I find the following:

Example:
Call goes from 77.94.246.11 -> 10.254.254.1 -> 10.166.38.109 (NAT is in place). OpenSer and RTPProxy are installed on 10.254.254.1. RTPProxy is started via de UDP-socket.
This was the only call going on!

Analysis shows:
77.94.246.11 -> 10.254.254.1 : Max delta 34.24, Max Jitter 1.69, Mean Jitter 1.05
10.254.254.1 -> 10.166.38.109: Max delta 41.78, Max Jitter 5.50, Mean Jitter 3.83

10.254.254.1 is a HP DL140 (Xeon Processor) with 4 GB memory. CPU is around 0.2%.

I've installed the latest stable RTPProxy. Even with one call I get a reasonably extra jitter by RTPProxy. What could be the cause of this?

TIA,

Ronald.