Towers aren’t specific to any single phone company, if you stop paying for your phone service entirely, you can still dial 911. It just hits off the nearest tower.
I was under the impression that a company (AT&T) owns the tower, and they can lease out connections from that tower to other providers. They are also required by law to route 911 calls for free, but I can see a scenario if they botched the routing where 911 would not be accessible from that tower.
Towers aren’t specific to any single phone company, if you stop paying for your phone service entirely, you can still dial 911. It just hits off the nearest tower.
I was under the impression that a company (AT&T) owns the tower, and they can lease out connections from that tower to other providers. They are also required by law to route 911 calls for free, but I can see a scenario if they botched the routing where 911 would not be accessible from that tower.