@bernard - when you say internet phone, I assumed it was something through Spectrum. Do you mean a phone number through something like Ooma?
edit: I just re-read your OP. If you want to keep a VOIP version, kind of a "landline", instead of going with the NH Broadband option you could do something like Ooma. i haven't checked their monthly cost for basic service, but it used to be quite reasonable.
Though given how little you use it, you probably could get rid of it altogether.