> Building modernized VoIP-based landlines that still offer the 48V analog POTS interface would be phenomenally expensive About $35 / connection[0], but usuall

> Building modernized VoIP-based landlines that still offer the 48V analog POTS interface would be phenomenally expensive About $35 / connection[0], but usually basically free because it's part of the customer's router[1]. Comcast seems to offer unlimited wired telephony for $20 / month, so it's definitely doable. [0]: https://www.amazon.com/Grandstream-HT801-Single-Port-Telephone-Adapter/dp/B06XW1BQHC/ https://www.amazon.com/Grandstream-HT801-Single-Port-Telepho... [1]: https://www.amazon.com/ARRIS-Surfboard-Telephone-Certified-SVG2482AC/dp/B07Q57WJ34/ https://www.amazon.com/ARRIS-Surfboard-Telephone-Certified-S...