[dan0-]

I feel like the core product is pretty easily replicated with Freeswitch and tailored with a little configuration. Eg: Ring a phone for 30 seconds (so as not to leave a message accidentally), if answered read back the issue (using text to speech), otherwise send the phone a text and <insert whatever else you want to do>.

Having set systems like this up for numerous clients, the latter bit is usually a case of waiting a few minutes for the on call person to either accept the alert, or failing that move onto whoever the fallback is for that person.

[verelo]

The core feature of Pagerduty here is resilience imo. As in, i expect whatever’s issue I’m having that they will not be having. I imagine if an AWS zone is down, large scale network issue, etc, any home rolled solution is likely to be impacted too.

[dan0-]

While I get the point, two servers running Freeswitch combined with a bit of python and a regular rsyncing of the user data would give one pretty good uptime for monitoring.