When I refer to a smart jack, I am thinking of the "electrical interface" type of smart jack. Are they known by something else? The telco can send a loop up/down command to the termination point and test the line out.

Ok...why would the telco terminate on a 66 block over one of the devices I describe above?

The answers will lead me onto more questions but I'll use this as a starting point.

Regards,

Rick