This might seem like a silly question, but if I want to connect my Cisco 2811 gateway router to the PSTN through a FXO/FXS port, what am I PHYSICALLY connecting to?
In other words, do the cables go from the router's FXO port(s) to an Adtran? (if I have a T1 circuit that will handle voice traffic). A socket in the wall?
I know it can connect directly to a PBX, but I want to connect directly to the PSTN.