Demo of a small embedded device using an RP2350 and WIZ5500 ethernet controller.
When connected to the PC network port on snom VOIP phones it will then discover the local phone via LLDP and update its action URLs so that the phone sends webhooks to the device when it rings/missed call etc.
The only device configuration it needs is the phones admin password which can be set via serial console and is then stored encrypted in the device.
