Wireshark · Wireshark-users: Re: [Wireshark-users] VoIP compatible Software (Delay?)

[Sam <scomeng@xxxxxxxxx>]

Thank you for replying, fortunately all the problems have been solved, and now everything is working well!

I have only one question; how do we get the Delay using wireshark for a certain VoIP call?! Thank you again

Lars Ruoff <lars.ruoff@xxxxxxxxxxxxxxxxx> wrote:

Hi,

what do you mean with "... the program does not recognize any VoIP calls"?
You don't see any RTP packets?

Note that since RTP is an application layer protocol with dynamic port
assignments, it is not by default decoded in Wireshark,
unless ...

- the capture also contains the signalling traffic setting up the RTP
media streams, i.e. SIP, H.323 or MGCP packets.
- OR you enabled "Try to decode RTP outside conversations" in the RTP
preferences settings. (This is known as heuristic dissection.)
- OR you decode the conversation by hand, i.e. you select a packet and
then "Decode as..." RTP.

br,
Lars Ruoff


Sam wrote:
> Hi there,
>
> Greetings from Greece! I am facing some problems with
> Wireshark ... I am working my final project in which I am trying to
> measure some parameters (lost packets, delay, jitter, etc) of VoIP calls
> over a wireless network. The major problem is that in almost all cases
> the program does not recognize any VoIP calls. The programs that I have
> used for the calls are SJPhone and X-lite. What may be the reason for
> that? Are there any settings for the VoIP calls that I must perform or
> is there another, more compatible program that I can use? Thank you very
> much in advance!
>
>
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