I belive that technically SKYPE is not VoIP.
VoIP is voice channels signalled through either SIP or H.323, both of
which ethereal supports.
Skype use afaik some proprietary protocol no one has bothered to implement yet.
In order to determine what is what is not RTP ethereal needs to see
the signalling of the ports used by RTP. Ethereal can not see the
signalling used by skype since there is no dissector for it.
You can select the UDP packets manually and use DecodeAs to specify
they are RTP,
or wait until someone might maybe add support to the signalling
protocols used by skype.
On 5/15/05, Patryk Kruk <patkruk@xxxxx> wrote:
>
>
> Hello
>
> I have a problem with VoIP.
>
> I try to test skype (voice communicator:-)). Ethereal recognize VoIP as a
> TCP and UDP protocols. I wrote, that I should decode UDP protocols as RTP. I
> did it, but in RTP statistics in columns Lost, Max Delta, Max Jitter, Mean
> Jitter and Pb? I have only zero values.
>
> What is the reason? How can I fix it?
>
> Patryk K
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