asterisk users - Jan 2005 - Some issues with X-Lite and codecs.

Hi there,

I am experiencing some issue with X-Lite.
When I am calling over the phone thru my PSTN-to-VoIP gateway 
internationally using G.729 the quality is just perfect.
When I am using X-Lite to connect the same box, and then to call 
internationally - I am experiencing some issues.
I have 5Mbit/800Kbit cable link with average 60 msecs to my VoIP box. 
The transfer rate is never falling below 500Kbytes/sec.
Therefore I am not suspecting quite noticeable packet loss.
I enabled G.711 ulaw, alaw and speex codecs on both sides. By playing 
with different codecs I am trying to avoid some
clicking and sound distortion, which is I am experiencing right now. 
Speex sometimes is better than G.711, but still having the same
glitching. My question is, is there any way to fix it by playing with 
some parameters on * side, or it's better to play with X-Lite parameters?



All the Best!
Sergey.

Hi Sergey,

Have you tried phoning from X-Lite to your PSTN line, or your PSTN line 
to X-Lite? How is the audio quality then? Does it vary depending on the 
codec you have used?

Andrew

On 23/01/2005, at 4:31 PM, Sergey Kuznetsov wrote:
> Hi there,
>
> I am experiencing some issue with X-Lite.
> When I am calling over the phone thru my PSTN-to-VoIP gateway 
> internationally using G.729 the quality is just perfect.
> When I am using X-Lite to connect the same box, and then to call 
> internationally - I am experiencing some issues.
> I have 5Mbit/800Kbit cable link with average 60 msecs to my VoIP box. 
> The transfer rate is never falling below 500Kbytes/sec.
> Therefore I am not suspecting quite noticeable packet loss.
> I enabled G.711 ulaw, alaw and speex codecs on both sides. By playing 
> with different codecs I am trying to avoid some
> clicking and sound distortion, which is I am experiencing right now. 
> Speex sometimes is better than G.711, but still having the same
> glitching. My question is, is there any way to fix it by playing with 
> some parameters on * side, or it's better to play with X-Lite 
> parameters?
>
>
>
> All the Best!
> Sergey.
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