[asterisk-users] Re: Inbound Voice Quality - Speed Change

Matt mhoppes at gmail.com
Thu Mar 29 06:28:24 MST 2007


13/15 is good, and I"m not saying this is definately the issue, but it's
just a thought I had.  Download pingplotter (pingplotter.com) and run it to
the teliax server for about 30 minutes, or so.   Set your test interval to
1second.    See if it makes a nice steady line, or if it looks like a city
scape (bad).

Especially take notice what it looks like during calls in which the audio is
screwed up.

On 3/28/07, Jim Duda <jim at duda.tzo.com> wrote:
>
>  Matt,
>
> That's possible.  I've been struggling with this for a while.
>
> I recently transitioned from cable modem service to Verizon FIOS.  I
> didn't get a big change in behavior ( I was hoping so ).
>
> My VOIP provider is Teliax.  My ping responses to the Teliax server are
> around 13/15 mS.
>
> Can you recommend a method to test jitter or packetization?
>
> Jim
>
> "Matt" <mhoppes at gmail.com> wrote in message
> news:c11d02530703280758p100d6e65yfbe11a984fa7b340 at mail.gmail.com...
> And/or periods of large jitter on your network connection.
>
> On 3/28/07, Matt <mhoppes at gmail.com> wrote:
> >
> > Could it possibly be a packetization rate issue with your provider?
> >
> > On 3/27/07, Jim Duda <jim at duda.tzo.com> wrote:
> > >
> > > Many times the "speed" of an inbound voice call changes.  It's
> > > similiar
> > > to playing a 33 LP at 45 speed.  Sometimes the voice becomes
> > > uneligible.
> > >   A "speed" change is the best way to describe it, seems like the
> > > voice
> > > packets are being played out too fast.
> > >
> > > Can anyone explain what might cause this?  It doesn't always happen,
> > > and
> > > seem unpredictable.
> > >
> > > Thanks,
> > >
> > > Jim
> > >
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