alarmdecoder.com

So I am totally new to all of this but I just got my ad2usb attached to my vista20p today and have been testing it out from the remote keypad. Everything seems great but I noticed that when I arm the system it takes over my phone line and kills any call that I may be on. This happens from any keypad so I wonder if it always did this I just never knew since I don't normally arm it while I am home working etc.

So is this a normal behavior? Optional behavior? Why is it doing it?

Thanks!

If that is the only phone line in your home and your alarm is configured to use and dial through it - during events, it will absolutely behave like this.

Yes thanks - I get it now. I didn't actually realize the monitoring company was alerted during arming vs a fault etc.

I am a total alarm newbie - thanks!