ADT alarm systems through Asterisk

Comment on Asterisk phone SPA-2000
elliott3232
Joined: Mon 26 of Jun, 2006

Re: ADT alarm systems through Asterisk

Posted:Wed 03 of Jan, 2007 (19:09 UTC)
> The ADT alarm system at my company required a few phone lines.

FYI. If you want to not keep your pots lines, uControl (http://www.ucontrol.com) will attach to an exisiting security system and work over your broadband connection (plus add some other features).
Anonymous

ADT alarm systems through Asterisk

Posted:Thu 20 of Jan, 2005 (00:35 UTC)
The ADT alarm system at my company required a few phone lines. While it's best to use REAL phone lines because they come with a battery and keep you secure during a power outage, this is an interesting stopgap. It doesn't make a modem connection, instead is dials a number and after connecting, dials a feature code to the reciepient toll free number. It dials these codes quickly and so the configuration must use DTMF of inband.

Echo cancelation OFF
DTMF = inband
use ulaw ONLY
Use preferred codec only

I believe that DTMF is the trick that really makes it work.