Wireshark-users: Re: [Wireshark-users] jitter calculation example on wireshark wiki

From: capricorn 80 <cool_capricorn80@xxxxxxxxxxx>
Date: Mon, 22 Mar 2010 15:27:21 +0000


 Hi lars!

 Thanks for your reply.

 If i run this at centralized place i.e Astersik pbx: will it give some additional information. I mean its hard to get end to end jitter but if i run it on centralized server than i can have both sides RTP.so is it possible using wireshark to just tell wire shark to calculate the jitter of both sides.

  Well right now i am doing is like this that I am running wireshark on both sides so i have RTP of A ---> B and  B ---> A. Can I by any mean calculate end to end jitter/delay ?

  Can you explaing this line -> network jitter is symmetric ?

 Regards,

> From: lars.ruoff@xxxxxxxxxxxxxxxxxx
> To: wireshark-users@xxxxxxxxxxxxx
> Date: Mon, 22 Mar 2010 11:20:42 +0100
> Subject: Re: [Wireshark-users] jitter calculation example on wireshark wiki
>
> It is done on the receiver side.
> I.e. if we consider an RTP stream direction A-->B, then we calculate jitter for B. For this we analyse all incoming RTP packets to B.
>
> So you need to run Wireshark on the end which recieves the RTP packets.
> But since RTP conversations are usually both-ways and if you assume that network jitter is symmetric, then you can do it on either end.
>
> Hope that answers your question,
> regards,
> Lars
>
> ________________________________
>
> From: wireshark-users-bounces@xxxxxxxxxxxxx [mailto:wireshark-users-bounces@xxxxxxxxxxxxx] On Behalf Of capricorn 80
> Sent: samedi 20 mars 2010 16:36
> To: wireshark-users@xxxxxxxxxxxxx
> Subject: [Wireshark-users] jitter calculation example on wireshark wiki
>
>
>
> Hi!
>
> The jitter calculation in aaa.pcap is done on the user side or server side?
>
> As asterisk pbx uses centralized based approach in which every communication goes from server not like skype. Is it possible to calculate jitter by running wireshark on the server?
>
> Regards,
>
>
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