Notifications: SMS Notifications Support
When you plugin a 3G modem/UMTS, it should be possible to use this to send SMS notifiers.
In this case (more asg / red in separate geopgraphical areas), in my opinion, this feature shoul be move under ACC... not in reporting area of ASG.
What you propose to use AdvancedHostMonitor is very good for one or two centralized ASG, but when you have many ASG or many RED device, in separate geographical do not think it's a good idea.
Consider, for example about 35 branch offices all in separate geographical regions and some central office (imagine a supermarket or bank). In this scenario it is very difficult (and expensive) to have a AdvancedHostMonitor in each small office.
I think there is another firewall (not that I know) with this facility or feature and therefore it is a great selling point.
I think that the best way is to use a dedicated software for monitoring (you can choose between hundreds of different tests). I use AdvancedHostMonitor and I have connected a mobile phone with usb port.