The answer is generally no, as heartbeats are data. The receiving station would also need to keep track of and handle them.
So all the smash and crash does, when the door is opened, a signal is sent and they start a timer on their side. There is no supervision outside of that; all of it is reactive based not proactive. Cellular is usually backup and most of the time the alerts are sent via phone line (either analog or VoIP) so there is no heartbeats there. It is not like every 30 seconds it will phone them and say all is good.
Now if they could use an IP/Ethernet module, then there can be heartbeats. All you need to know is what communication methods a provider can use and that will tell you. If a phone line is required, then they aren't using IP/Ethernet modules. If they do support IP/Ethernet modules, if they actually use heartbeats as a detection method is a different matter. As someone else stated, ISP outages would cause an alarm. Now you have reps at the alarm company trying to verify, contact homeowners or call the police. A few false alarms where the cops or fire department shows up, they will then start sending you a bill for the false alarm.
Unless you live in the middle of nowhere, a loud siren (maybe even one outside) and strobes would be what you're looking for. That draws attention to your house. You could possibly wire it in a way that the panel keeps power on a relay and if the smash and crash is performed, power is removed from the relay which would then cause the siren and strobes to go off. The strobes and siren would be powered from outside of the panel. In the event of a power failure, the battery backup would keep power to the alarm panel and if the battery power went out, the strobes and siren wouldn't go off since they don't have power. When power is restored, they could go off though as the board probably wouldn't be fully booted up. Also, if you're getting home late and set the alarm off, I'm pretty sure the neighbors won't be happy when the outside siren(s) go off.
While what you're looking for sounds easy and doable, most of the alarm companies are kinda stuck in the past. Some still require POTS lines and in many new development areas, copper to the house isn't there. It is essentially VoIP even though you still have copper inside the house and you plug the analog phone into the wall.
Cloud providers cannot guarantee 100% uptime and outages do occur on the Internet.
https://www.wired.com/story/bgp-route-leak-internet-outage/
Your ISP does work at night and most of the time, you will never know. There is also many single points of failure in your Internet connection. Even for large business, having redundancy can be a tough task. You just cannot go and get two Internet circuits from two different providers and call it a day. Backhoe Joe is known to tear up fiber and copper. So now you need diverse paths and pay the carriers to make sure circuit A and circuit B share nothing; one comes in one way into the building and the other comes in a different way; maybe one comes in on the south side and the other a north side. But you also need to make sure that they both don't use the local phone company and ultimately share a path along the way. It happens quite often. Where am I going with this. Amazon is a powerhouse in cloud computing and they have outages. How is a company like Alarm.com capable of what Amazon isn't? All it takes is routing issue to occur and it impacts say a certain ISP in a geographic area and they start seeing alarms. They probably won't be able to correlate the issue and if they did, they could overlook an alarm that is legitimate.
So alarm companies if they do support IP/Ethernet communication options, it is highly likely that the panel only calls them when the alarm is triggered. The smash and crash is just sending a message that says the system was armed and has been triggered but not yet in the alarm state. The lack of a followup message they just assume the panel is in an alarmed state. They will probably call you before they call the police. If you had cameras and they notified you on motion outside your house, then you would know long before the alarm company called you.
I can get alerts for motion on cameras outside my house as well as when any door or window is opened...with or without the panel being in an armed state.
The dog wanted to go out:
Sep 29, 2019 at 10:15:07 PM
Caddx Security System zone 005: 'triggered!' {Backdoor }
Caddx Security System partition 1: 'Not Ready!'
Caddx Security System keypad 1: LCD message line 1: "System Not Ready", LCD message line 2: "For help, press ->"
Caddx Security System partition 1: 'Not Ready!'
Caddx Security System keypad 1: LCD message line 1: "System Not Ready", LCD message line 2: "For help, press ->"
Caddx Security System partition 1: 'Disarmed!'
Caddx Security System keypad 1: LCD message line 1: "System Ready", LCD message line 2: "Type code to arm"
Caddx Security System zone 005: 'normal!' {Backdoor }
That was the door being opened (triggered) and then closed (normal). I could get those alerts on my phone if I wanted; currently they just go to a log. So my HA system knows full well what the status is of all 24 zones; almost every window is on its own zone and every door is on its own zone. The garage doors are also each on their own zone. MyQ is also used and I get an alert when the either garage door is opened or closed directly to my phone. Motion sensed outside, that is an alert as well. So a smash and crash wouldn't do anything for me since I can be notified before a door or window is even opened. I can even go as far as I need to be out of my home for the alerts to occur; my HA system does know when I'm home and when I leave. The thieves could cut the cut the Internet connection and thus no alerts though.
I could run a web server and have it monitored and get alerts if the site isn't reachable. A quick search provided this service:
https://uptimerobot.com/pricing
$4.50 a month for 1 minute health checks; the free version is every 5 minutes.
At the end of the day, I could call the cops as fast or faster than an alarm company could. I know when someone is at my front door before even get to it. I can be alerted if any window or door is opened; system armed or not.