asterisk users - Feb 2006 - Skype vs. an Xlite registered to Asterisk

I have a bunch of road warriors who I've set up with Xlite clients. 
Unfortunately
the sound quality has been intermittent at best.  Sometimes it's great other
times completely unusable.  When it's bad one usually hears harsh static
when the other party speaks or their voice gets "clipped" to static if
they
speak too loudly.

Many of these users have migrated to Skype ? much to my chagrin!  I'd like
to get them back using a SIP client so they can take advantage of all
Asterisk can offer.

Anyone else had trouble with voice quality with Xlite?  Any work arounds?

I was thinking about trying an Xlite client that can support G729.  Anyone
had experience with that?  Does it significantly improve voice quality?

I also read that SJ Phone is better than XLite, but is it really the client
application that makes the biggest difference or the codec?  Perhaps it's a
combination or something entirely different?  Anyone with experience with an
SJ Phone and G729 codec?

Any suggestions welcome!

Yours,
Hugh

P.S> Asterisk 1.2 on Redhat 9.0
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Hi
I have good results in using, the old very (free) of firefly (IAX2), 
with g729!

rgds
Jesper Langpap

hugolivude wrote:
>
> I have a bunch of road warriors who I've set up with Xlite clients.  
> Unfortunately the sound quality has been intermittent at best.  
> Sometimes it's great other times completely unusable.  When it's
bad
> one usually hears harsh static when the other party speaks or their 
> voice gets "clipped" to static if they speak too loudly.
>
> Many of these users have migrated to Skype ? much to my chagrin!  I'd 
> like to get them back using a SIP client so they can take advantage of 
> all Asterisk can offer.
>
> Anyone else had trouble with voice quality with Xlite?  Any work arounds?
>
> I was thinking about trying an Xlite client that can support G729.  
> Anyone had experience with that?  Does it significantly improve voice 
> quality?
>
> I also read that SJ Phone is better than XLite, but is it really the 
> client application that makes the biggest difference or the codec?  
> Perhaps it's a combination or something entirely different?  Anyone 
> with experience with an SJ Phone and G729 codec?
>
> Any suggestions welcome!
>
> Yours,
> Hugh
>
> P.S> Asterisk 1.2 on Redhat 9.0
>
> ------------------------------------------------------------------------
>
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2006/2/26, hugolivude <hugolivude@gmail.com>:
> I have a bunch of road warriors who I've set up with Xlite clients.
> Unfortunately the sound quality has been intermittent at best.
What codec dis you use?? I think xlite support speex, that is the
better codec I've tested when connections are under hevy traffic (p2p
applications). G729 is good too, but Speex really worked great in my
tests.
>  Sometimes
> I was thinking about trying an Xlite client that can support G729.  Anyone
> had experience with that?  Does it significantly improve voice quality?
What you need to improve (or decress) is the bandwidth usage.

Check this: http://www.voip-info.org/wiki/view/Bandwidth+consumption
but try speex if it is supported by your sip phone. It is free,
variable bitrate and adapts to the available bandwidth, (it is based
on ogg codec).

--
Alejandro Vargas