[asterisk-users] Re: One way choppy sound

[Martin Joseph]

On 2007-01-17 10:29:43 -0800, Yelson Vivas <yvivas at gmail.com> said:

> Hi Guys
> I'm conecting 2 astersk servers using this arquitecture
> 
> (Ext softphone)<==sip==>(asterisk 1)<====iax2 trunk====>(asterisk 2) 
> <===alaw==>(pstn)
> 
> If i call from the Ext  to the asterisk 2 the sound is perfect, but  if 
> i call from Ext to the pstn, i can hear perfect but they tell me  that 
> sound really choppy, i tried using several codecs (same problem)  but  
> i don't understand why the sound is bad in only one way.
> Any sugestions to solve it more than welcome

Usually sounds can be "choppy" one way due to constrained upstream 
bandwidth.  There might be plenty of room for the audio to get to you, 
but that doesn't mean the reverse is at all true.

Jitter buffering can help this,  or using a more compact format (like 
GSM or g729) is also a potential helper.

Good luck, hope this helps,
Marty