[Asterisk-Users] G.729: Typical usage scenarios

[Humberto Atristain V.]

Dear John

I indestand that the ATA-186 working with G.729 Codel 3 only works 1 port at 
the same time, do you know something about it?

regards

Humberto


Mensaje citado por: John Todd <jtodd at loligo.com>:

> >Clicking on the "For more information, click here" link on the 
> >Digium site nice brings back up the same page I was looking at 
> >before, without any additional G.729 information that I can see.
> >
> >I'm wondering if some kind asterisker out there could provide us 
> >neophytes with some "typical scenarios" where that codec would be 
> >useful to us.
> >
> >For instance, I assume that it doesn't gain anything on calls passed 
> >out to the PSTN?
> 
> Well, if your Asterisk server is right next to your UA (ATA-186) on 
> the same ethernet, you don't gain anything - you should stick with 
> the ~80kbps G711 codecs which sound better.  If your Asterisk server 
> is on a different continent across a 56kbps satellite link, then I 
> would suggest that you look into the G729 codec.  People who are 
> bandwidth constrained and have multiple UA's connecting from distant 
> locations are most likely to benefit from G729.
> 
> >Do the Cisco ATA186s have any ability to handle this codec?
> 
> Yes.  Set LBRCodec to "3" and then set TXCodec to "3" and RXCodec to 
> "3" to set G729
> 
> >Perhaps it would be useful if I'm trunking from a FXS port here 
> >locally to an FXO port that is connected to a remote asterisk server?
> 
> Only if you have critical bandwidth shortages.
> 
> >Also, is the license "once in a lifetime" for a given channel?
> 
> One-time payment per channel.  No recurring fees.
> 
> JT
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Humberto Atristain V.