This is a phone I let my kids use; it's a landline "house phone" replacement, that I can take with me on vacation. It wouldn't make sense for it to forward to

This is a phone I let my kids use; it's a landline "house phone" replacement, that I can take with me on vacation. It wouldn't make sense for it to forward to my primary phone. I want a POTS landline (guess I'm stuck in my late 90s "it's more reliable than the internet connection, since the power comes over the copper" attitude), but I can't even get POTS installed here.