[asterisk-users] ADPCM codec and IAXy device

[Mojo with Horan & Company, LLC]

bilal ghayyad wrote:
> Hi All;
>
> I need to buy one IAXy device, but I discovered that
> it supports only g711 and ADPCM codec, so I was wonder
> that it does not support g729 or GSM?!
>
> Anyway, what is that ADPCM and how much it consumes
> bandwitdh? Also, asterisk support such codec? What its
> name in the configuration?
>
> Any advise?
> Regards
> Bilal
>
>
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I've heard, and I think Eric Wieling just confirmed it on the mailing 
list today, "The IAXy does not support highly compressed codecs..."

I seem to recall that there's a space for ADPCM in the IAXy provisioning 
file, but I also seem to remember that this codec was not implemented in 
the IAXy's firmware. 

I've never tested it, so I don't know for sure.  And if this was true, 
of course it could have changed by now :)