Will phone service that comes across with FTTN be compatible with medical devices that use traditional phone lines to communicate regular updates to a medical provider? I have a device that interrogates my pacemaker and calls my medical provider to give weekly status updates. I currently use a phone line provided by Time Warner.
You can call the manufacturer of the device (or in this case, possibly your medical provider) and see if it supports VoIP. As far as I know, Time Warner uses VoIP and doesn't have POTS (plain old telephone service) so Fusion FTTN should work.
The other aspect is that Fusion FTTN only comes with effectively one phone jack to plug a phone into. This may be fine if you only use the phone line for the medical device, but if you want to have additional phones this will be a problem. Backfeeding is something that can be done after the installation to get use out of all of your phone jacks, but as it requires some rewiring, we can't provide assistance and support it. You may want to look into backfeeding as a possible option that you could do or have an electrician help with.