Release notes for firmware series 750 B200 and BSV750B201
802.1x is enabled by default and cannot be disabled.
The Base device will perform network authentication using its client certificate. Network-side validation of the Snom SHA2Snom Certificate Authority certificates is mandatory.
Requiring NPS / RADIUS EAP-TLS and a 802.1X managed switch seems like a high barrier to implementation for small businesses deployments using a single M900.
I don't want get locked out and have to climb a ladder.