I am wondering how you hooked your alarm system into the DVR. I have a LYNXR alarm keypad/panel.
They only way I see to hook it into the DVR is by attaching into the external bell/siren circuit so that when the alarm system triggers the bell it would (supposedly) trigger an alarm in the DVR.
The webpage for the alarm system manual is :
http://www.nassecurity.com/manuals/ADEMCOLYNX.pdf
Let me know what you think.
Thanks