Robocall Blocking is incompatible with FIOS Freedom Essentials

[Seener]

I receive a half-dozen robocalls each day, so I decided to sign up for NOMOROBO's robocall blocking service. However, I was unable to complete my registration because the Simultaneous Ring feature apparently is unavailable with FIOS Freedom Essentials. It is available with FIOS Digital Voice, but FIOS Digital Voice is not available in my neighborhood.

It is very frustrating to know that there is technology out there which would allow me to block robocalls, but Verizon cannot provide me with the feature which is needed to utilize that technology.

Is there any reason why Verizon cannot add the Simultaneous Ring to FIOS Freedom Essentials?