I have a friend that is also curious. Their fibre cable was cut by addicts trying to find a source of copper that took a few days to be repaired. Using their hot spot during the outage used up their allotted hot spot bandwidth for the month. My friend would be very interested in how to avoid potential down time in the future.
Might I suggest an email address added to your HN profile, lest a publicly posted reply result in observation by a nefarious telecom employee who just might obviate the proposed solution to your friend’s conundrum.
Are we back to this again? I have a friend who wants to know how to build a blue box.
TTL++l0l