asterisk users - Sep 2009 - Asterisk remote calls with low bandwith and high latency

Hello,

I have 2 sites. One(Site 1) has an asterisk PBx and the Other(site 2) has 2
remote soft phones. The latency btw both sites is btw 500ms-700ms.  I know
this is a shot in the dark...but are there ways of improving the voice
quality for the remote calls(btw site 1 and site 2), Other than increasing
bandwidth?

-- 
Best Regards,
James Mutuku Ndeti
Agile Systems Limited
+254722490994
www.agile.co.ke
mutuku.wordpress.com

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(CRM)system? visit http://www.agile.co.ke/crm.php and find out how our CRM
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2009/9/8 James Mutuku <listmutuku at gmail.com>
> I have 2 sites. One(Site 1) has an asterisk PBx and the Other(site 2) has 2
> remote soft phones. The latency btw both sites is btw 500ms-700ms.  I know
> this is a shot in the dark...but are there ways of improving the voice
> quality for the remote calls(btw site 1 and site 2), Other than increasing
> bandwidth?
>
>
Hi,

The latency will result in long delay on the call and you can't do anything
about that.  I suppose its a VSAT link?

With respect to the bandwidth all you can do is carefully select a low
bandwidth codec.  This will depend on the codecs that your soft phone
supports.  Speex can be tuned to use little bandwidth.  G729 can be used
with licensed codecs from Digium.  Rumour is that G.723 is technically
possible with some googling and provided that you have some sort of licence
to use the G723 patent.

Regards,
Steve Davies
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