Can somehow we configure a FXO to be directly attached to a telephone

You can connect it, but it will never send ringing voltage to the phone. Just curious, what makes you think that this is possible and what benefit might you get out of it?

-mike

ricky wrote:

FXO port does not provide nether Ring voltage not Talk voltage. By the definition it's "receiver". In plain words, it's like if you connect two phones back-to-back without PBX between them.

Good luck,

Mike