I'm a Sonic customer with the older Fusion product (POTS + ADSL). When/if Sonic fiber becomes available in my area, I'd like to get it but keep the POTS line. I guess that would mean adding new fiber service and downgrading the existing Fusion service to POTS-only and keeping its phone number.
1) Is it possible?
2) Would the $150 POTS-only installation fee apply, given that I already have a Sonic POTS line?
3) Does it depend on AT&T, i.e, will it still work in 2020 when AT&T no longer provides new POTS service?