[Freeswitch-users] Alarm Receiver for FreeSWITCH?

[Gabriel Kuri]

I've done some work with alarm panels and VoIP over the years,
generally it doesn't work 100% reliably (similar to FAXing over VoIP),
plus there are some liability issues associated with it, but I'll
leave that for the lawyers to sort out ;) ...

Aside from sending the actual report, ContactID also requires an
initial handshake to begin the report and a 1400Hz "kissoff" to end
the report, which is the most important part. The alarm panel will
continuously try to send the ContactID report if the kissoff isn't
acknowledged by the central station. You need to be sure to the
kissoff is acknowledged, otherwise the panel will be dialing all day
long, unless it's setup with a limited set of retries before it gives
up.

Just my two cents.

Cheers,
Gabe

On Tue, Nov 23, 2010 at 7:49 AM, Jim Lynch <jim at k4gvo.com> wrote:
> On 11/06/2010 03:50 PM, Nazim Aghabayov wrote:
>> Hello Jim,
>>
>> No need for a module, this functionality can be achieved with a simple
>> LUA ivr script.
>> http://wiki.freeswitch.org/wiki/Lua
>>
>> Regards,
>> Nazim
>>
>> On 11/06/2010 11:37 PM, Jim Lynch wrote:
>>
>>> Alarmreceiver is an Asterisk application for the security industry. From
>>> the description of the module, "This application emulates an SIA
>>> (Ademco) Contact ID alarm receiver. The Contact ID protocol is the most
>>> popular signalling protocol used between alarm panels and central stations."
>>>
> In reading the SIA documentation for an Alarm Receiver application, the
> device sends (and expects) both DTMF and single frequency tones
> depending on the situation.  I see that dialplans can include checking
> for single frequency tones, but I didn't see any reference to being able
> to decode these from LUA.  Is that something that would be easy to
> implement?  Where might I start looking to do so?  Sending of tones
> could be accomplished via a .wav file so that part is covered.
>
> Thanks,
> Jim.
>
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