Monitor Internet connections/gateways

NPM can ping things inside the network, or you can setup an external ICMP-only node  that you can ping to determine the state of an internet connection. You are the one best situated to describe what you mean by 'primary Internet connections/gateways' and whether they are up or down. In my world I don't have such a thing, so what I monitor is: BGP peering sessions with one of the couple of hundred peers, plus link state to transit providers. In your world that might mean link state on an interface on a router.

NPM can invoke web services or run programs when it detects a failure. You are the best person to decide how you need that to work. In my world I have staff on-site 24*7.

You could have meant that NPM is going to have a process that received SMS messages and updates status on a map: in that case I'd look at a SMS receiving box, get it to run a script and/or send a syslog messages to solarwinds that I would then use to trigger an alert to take some action.

So, 'yes' is the best answer I could give. FGA: Only ask questions with yes/no answers if you want "yes" or "no" as the answer.

/RjL