Vega 50 FXO / Initial Setup / Never goes off hook to answer incoming calls

Anybody here running the Vega 50 FXO? Just got one, and it doesnt appear to work out of the box with incoming calls coming from POTS lines from my local telco. I can see the line voltage rise on the status page while the lines ringing, but the Vega never goes off hook to answer the call. I’ve looked all over the and followed the instructions on the page below but the vega never goes off hook when calls come in.

Any help would be greatly appreciated.