POTS is an abbreviation for Plain Old Telephone Service that refers to a traditional landline. Prior to the FCC 19-72A1 Telecom forbearance order in 2019, the FCC required by law for telecom companies to maintain their copper lines for emergency purposes. POTS lines are powered by the telephone company and are not tied into the end users’ power therefore making the POTS lines 911 code compliant. Follow this link to read the entire FCC Forbearance Order 19-72A1: https://docs.fcc.gov/public/attachments/FCC-19-72A1