[Asterisk-Users] Hardware based DSP

[Lubomir Christov]

Hi Shahed,

yes you are right if you use Digium hardware "all dsp related 
functionality has to be handled by software".
Asterisk supports also other hardware and one of them have DSP on it - 
Quicknet Phone/LineJACK cards ... but I'm NOT recommending you to use 
this hardware!
  Quicknet's driver is too old, it haven't been updated recently (I'm 
talking about the original ixj driver) and Quicknet don't offer good 
Linux support.

If you prefer to use hardware based DSP I think that it will be better 
to use not a PC cards, but to find some SIP based VoIP Gateways (they 
have g729 and g723 codecs included) and are working very well with Asterisk.

I'm recommending you this web site
http://www.voip-info.org
it's a very good VoIP information  resource.

Lubo
-- 

---------
Appradius Project: RADIUS authentication and accounting support for 
Asterisk PBX
http://appradius.minitelecom.org/
---------

Shahed wrote:
> Hi All,
> 
> Is it correct to say that by design,  asterisk wont make use of any cards
> hardware dsp capabilities ?
> 
> I don't think that any of the hardware cards currently supported
> have any dsp capabilities, but I wanted to know if for example,
> in the future a driver was written for a card that did have dsp 
> capabilities,
> would asterisk be able to make any use of it ?
> 
> I am only just starting out with asterisk, and have not fully understood
> the architecture yet, but it seems that in order to handle VoIP and PSTN
> seamlessly, all dsp related functionality has to be handled by software 
> ????
> 
> Thanks
> Shahed
> 
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