Re We proactively monitor our entire network and have very sophisticated monitoring and alerting so that we can resolve system-wide issues and outages 24/7/365.

I wish this monitoring included customers' ATAs that fail to register, then VoIPo elects to move incoming calls to the fail-over number. But outgoing calls still work. So customer doesn't know there's a problem.

Also monitor ATAs that don't register and email/text/VM the customer via automation to say there's a problem.

That would be proactive monitoring for customers' benefit, and not add labor cost to the business model.

It just seems that M-F days only is too little, all reliability things considered. And offer such to those wanting to pay a bit more for it.