Re: skew, delta and jitter in wireshark VOIP->analyse

[nangergong <nangergong () gmail com>]

thanks

BTW, when I use iLBC codec for audio VOIP calls, I noticed that the skew,
delta and jitter shown in wireshark VOIP-Analysis GUI are all 0, what is the
reason for this? Does this mean that wireshark can't analyze iLBC codec?





On Wed, Feb 9, 2011 at 2:04 PM, Anders Broman <anders.broman () ericsson com>wrote:

> -----Original Message-----
> From: wireshark-users-bounces () wireshark org [mailto:
> wireshark-users-bounces () wireshark org] On Behalf Of Giles Coochey
> Sent: den 9 februari 2011 14:48
> To: wireshark-users () wireshark org
> Subject: Re: [Wireshark-users] skew, delta and jitter in wireshark
> VOIP->analyse
>
> On 09/02/2011 14:37, nangergong wrote:
> > > Hi, all,
> > >
> > >   What is the difference between skew, delta and jitter in a voip
> stream?
> > >   I only know the impact of jitters on voip streams, what are the
> > > impacts of skew and delta on VOIP streaming quality?
> > >
> > >   Thank you!
> > Not sure if my understanding is correct... skew is absolute jitter based
> on comparison on the first packet(s).
> > delta is what I understand to be latency, or delay.
> >
> > --
> > Best Regards,
> >
> > Giles Coochey
> See
> http://books.google.com/books?id=OM7YJAy9_m8C&pg=PA175&lpg=PA175&dq=RTP+skew&source=bl&ots=hUOESKrWB4&sig=F2cjXTyonrfi5R7pgKjuHRli4SA&hl=sv&ei=np1STe-PFIfLswbL7bjyBg&sa=X&oi=book_result&ct=result&resnum=10&ved=0CEQQ6AEwCQ#v=onepage&q=RTP%20skew&f=false
>
>
>
>
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