We have an Arrowhead Elite S alarm with the IP module installed. The owners before us had this installed. I've managed to get the app on my phone and can unlock /lock from there, and it seems to do push notifications. We had the same alarm at our old house, but it connected to a copper line, and called us when activated. I'd ideally like to do this like this again, but via VoIP. I've checked the download material, but even though it refers to VoIP, it also says it won't work.... We can get a free VoIP service from our Internet provider, but we currently don't have it.

From the paperwork;
TELEPHONE WIRING OPTION 3: with Voice over IP System
VoIP phone lines will Not work
with the Alarm System.

I'm a bit of a noob sorry, and I've left about a dozen messages for the installer (who I'd happily pay) to no avail. I just don't trust the push notifications, and would like the call as well.

Any advice appreciated
Dave