>You can replace someone's POTS line with VOIP and they'll likely never notice (and this is underway). They'll notice if you take your fax machine. The questio

>You can replace someone's POTS line with VOIP and they'll likely never notice (and this is underway). They'll notice if you take your fax machine. The question is if fax on VoIP is still fax in that sense. At least the wikipedia article on fax mentions transmission through audio-frequency tones [1]. However if you count fax over VoIP as fax, I guess you should also count phone on VoIP as "landline". [1] https://en.wikipedia.org/wiki/Fax https://en.wikipedia.org/wiki/Fax