Re: [Astlinux-users] Bizarre idea...

[<ast...@el...>]

Hrm, for some reason I can't access digium's site today...

Looking through at the card's description on other sites, it is
conceptually similar. But you are locked to G.729a and G.723.1 for
conversion to/from alaw/ulaw which while useful, is a restriction.

I may be greedy here, but I want more. I want more codecs. I want more
flexibility. A FPGA provides the flexibility, but there's the price
barrier, which could be bypassed if you had something similar to a
crypto engine with cryptographic primitives that can be used by many
types of encryption. Or just get a swiss army knife codec DSP chip
from TI and live with the restrictions. With video coming along, it
won't be a strictly voice world anymore. Right now, there is a lot of
pass through work being done because we can't "peek" into a call. At
some point, that will either become undesirable, or legally not
allowed (can you say communications analysis and filtering for
compliance? can't claim ignorance forever...). Tangentially, despite
processors getting more powerful, dedicated hardware offload is still
normally faster.

On 4/9/07, John Tilghman <joh...@gm...> wrote:
> Have you seen this
> http://www.digium.com/en/products/hardware/tc400b.php
>
>
>
>
> On 4/8/07, ast...@el... <ast...@el...> wrote:
> >
> > I had a bit of a brainfart recently after seeing some info on the
> > newer VIA nanoITX boards that should be coming out late summer.
> >
> > I understand that there are codec offload engines available as
> > hardware. In the case of the VIA stuff I saw, their new monolithic
> > chipset has a number of decode capabilities, which can be expanded
> > with an external encoder ASIC chip.
> >
> > Is there any value (or a market) for a dedicated VoIP codec offload
> > engine for Asterisk? Would this be best served by real hardware, or by
> > an FPGA? The bad idea I had was, get a PCI card with something like a
> > Xilinx Vertex4 FPGA, and load up all the codecs Asterisk should ever
> > need, video included. Since trying to do this has already crossed a
> > number of programming, royalty, and cost thresholds, go for some echo
> > cancelling as well. Bad idea, or just infeasible due to cost and
> > complexity?
> >
> >
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