We don't have a landline phone at home. Cell service where we live has been more reliable. I used to keep a landline for faxing and babysitters to use, but I haven't sent a fax in ages and all my babysitters have cellphones.

If I have to, I can power the broadband Internet gateway with an inverter and make VOIP calls, in the unlikely event that the cell system goes down but Internet stays up.