Re: [asterisk-users] Re: One way choppy sound

2007-01-22 Thread Tim Panton




On 1/19/07, Martin Joseph <[EMAIL PROTECTED]> wrote:

On 2007-01-17 10:29:43 -0800, Yelson Vivas <[EMAIL PROTECTED]> said:

> Hi Guys
> I'm conecting 2 astersk servers using this arquitecture
>
> (Ext softphone)<==sip==>(asterisk 1) 
(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



On 21 Jan 2007, at 03:46, Andrew Joakimsen wrote:

I've actually found in many cases a lower bandwidth codec doesn't
improve at all and however it oftentimes makes the issue worse.


What other traffic do you have on the IAX trunk link ? Even if it isn't
'full' you may be hearing your IAX packets being delayed behind 'bigger'
packets, or sitting in a low priority queue on a router. You might  
want to

look into applying a QoS to the link.

Tim Panton

www.mexuar.net
www.westhawk.co.uk/



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Re: [asterisk-users] Re: One way choppy sound

2007-01-20 Thread Andrew Joakimsen

I've actually found in many cases a lower bandwidth codec doesn't
improve at all and however it oftentimes makes the issue worse.

On 1/19/07, Martin Joseph <[EMAIL PROTECTED]> wrote:

On 2007-01-17 10:29:43 -0800, Yelson Vivas <[EMAIL PROTECTED]> said:

> Hi Guys
> I'm conecting 2 astersk servers using this arquitecture
>
> (Ext softphone)<==sip==>(asterisk 1)(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


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[asterisk-users] Re: One way choppy sound

2007-01-19 Thread Martin Joseph

On 2007-01-17 10:29:43 -0800, Yelson Vivas <[EMAIL PROTECTED]> said:


Hi Guys
I'm conecting 2 astersk servers using this arquitecture

(Ext softphone)<==sip==>(asterisk 1)(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


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