No particular reason that "land line" phones need wired service though. My office uses 5G service for internet and ATA VOIP adapters for the phones. The experie

No particular reason that "land line" phones need wired service though. My office uses 5G service for internet and ATA VOIP adapters for the phones. The experience of using the phones is exactly the same as when they were on traditional copper circuits provided by the phone company 10 years ago.