[Freeswitch-users] Ademco signaling with mod_spandsp

[Moises Silva]

On Sun, Aug 18, 2013 at 8:18 PM, Brian Foster <bdfoster at davri.com> wrote:

> It's probably easier to write something in LUA to handle this. Seems
> pretty straightforward looking at the standard. Might be wrong though.
>
> Although not rocket-science, I believe you might be underestimating it a
bit :-)

I have not looked at the standard and have no experience at all with the
protocol, but the code is in spandsp for a reason, there are some
per-sample digital audio calculations, tone/silence detection etc, with
strict rules/timing that most likely you won't be able to do from LUA.

See libs/spandsp/src/ademco_contactid.c comments

I believe the right approach is to write a mod_ademco wrapper that exposes
the functionality to the dialplan (either through dialplan applications or
functions), then you can write LUA scripts :-)

Moy

*Moises Silva
**Manager, Software Engineering***

msilva at sangoma.com

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