[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Linphone-developers] Mesuring speech quality with linphone

From: Eduardo Bezerra
Subject: Re: [Linphone-developers] Mesuring speech quality with linphone
Date: Thu, 22 Sep 2005 08:45:41 -0400


1.   The ctl->adaptative=TRUE change was a mistake. We were testing
your jitter buffer implementation and forgot to remove this line.

2.    I agree with you that qos trace files can be useful more for researchers,
students and benchmarkers than for end-users. But we can think in some
interesting improvements for linphone as future work like:
a. The end user could be benefited by Network Management works. A VoIP
Service could be more efficient if the network has some Management.
But, Network Management needs a "Management Information Base" (MIB).
Linphone can help here, feeding the MIB. This MIB can be fed by standard
reports like RTCP-XR (RFC 3611). In some fields of this extended report
voice quality information must be reported. As you can realize, if you don't
have extended reports, you will not have fed MIB's. If you don't have fed
MIB's, you will not have Network Management. And finally, if you don't have
Network Management, the end-user will not have a better service.

b. While these extended reports aren't implemented, the end-user
can be benefited by more information about calls. I think that
knowing the voice quality during calls could be interesting to the

c. As you said, researchers, students, benchmarkers and developers
can be benefited by this information too.

2005/9/14, Simon Morlat <address@hidden>:
> Hello,
> Thanks for this publishing this patch to everyone.
> I have not yet decided to integrate it into the main tree, as it's quite big
> and only interesting for researchers, students, benchmarkers, not end users.
> Comments and arguments welcome.
> I do not undersand why you changed ctl->adaptive=TRUE in
> jitter_control_stop(). ?
> Thanks again.
> Simon
> Le Jeudi 8 Septembre 2005 15:48, Eduardo Bezerra a écrit:
> > Hi all,
> >
> >
> >   Regeane Aguiar (address@hidden), Alexandre Passito
> > (address@hidden) and I developed a patch to linphone 1.0.1 to measure
> > speech quality using the tool available in
> >
> >   The patch-qosfile-050721 file makes modifications on oRTP to
> > generate the trace
> > file and the patch-linphonec-qosfile-050721 modifies linphonec to
> > accept aditional
> > options about the speech measurement.

Eduardo Bezerra Valentin
Bacharelado em Ciência da Computação - DCC - UFAM
Laboratório de VoIP - GRSD - UFAM

reply via email to

[Prev in Thread] Current Thread [Next in Thread]