On Tue, Feb 17, 2009 at 15:09, Jeff LaCoursiere <j...@jeff.net> wrote:
>
>
> On Tue, 17 Feb 2009, Jerry Jones wrote:
>
>>
>> Most alarm systems around here use bursts of dtmf - not an actual
>> modem to communicate with alarm central.
>>
>> Yes I have seen these have many issues with voip in the path.
>>
>
> You mean they communicate with an IVR?  Seems like that could be made
> solid with the right DTMF options enabled on the ATA.
>
> FWIW that makes a lot more sense than a modem connection.
>

No, it's not an IVR. It's a protocol called ContactID.

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