[VOIPSEC] How QOS of VoIP call is measured

[Schwarz Albrecht]

This isn't the question (using RTCP as reporting point for measurements)
in my understanding.

Using SIP, H.323, H.248, MGCP, etc as reporting point for (local and/or
remote) RTP based measurements (i.e., metrics defined by RTCP SR, RR,
XR, HR):

SIP:
see http://tools.ietf.org/html/draft-ietf-sipping-rtcp-summary-02

H.248:
see H.248.30, Draft H.248.48, rtp package

MGCP: 
e.g. http://tools.ietf.org/html/draft-auerbach-mgcp-rtcpxr-07.html

H.323:
?

Regards,
Albrecht


> -----Original Message-----
> From: voipsec-bounces at voipsa.org 
> [mailto:voipsec-bounces at voipsa.org] On Behalf Of Yusuf Mayet
> Sent: Mittwoch, 14. November 2007 20:02
> To: voipsec at voipsa.org
> Subject: Re: [VOIPSEC] How QOS of VoIP call is measured
> 
> Hi,
> 
> SIP and H323 use RTP as the Transport.  RTP is usually 
> acompanied by RTCP.  RTCP gives you things like jittter, 
> delay, packet loss.
> 
> On Nov 14, 2007 1:36 PM, Bincy K. Philip 
> <bincy.philip at nestgroup.net> wrote:
> >
> >
> >
> > Hello ,
> >
> > I need to know QOS measurement details of VoIP calls.
> > For meauring QOS of a VoIP call using SIP or H.323, any 
> additional protocol support have to add in the application.
> > I mean, how the QOS measurement tools works and gives the 
> QOS measured value.
> > I got familiar with free tools like WinEyeQ  and 
> VQmanager(only for SIP).In the same setup different 
> applications/softphones gave different values.How it works?
> >
> >
> > Thanks & Regards
> > Bincy K Philip
> >
> >
> > _______________________________________________
> > Voipsec mailing list
> > Voipsec at voipsa.org
> > http://voipsa.org/mailman/listinfo/voipsec_voipsa.org
> >
> 
> 
> 
> -- 
> 
> thanks,
> Yusuf
> 
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