I have to be overlooking something. I have a BCM50 and I'm trying to program a line out on an m7100. All of my lines are in Pool A and the extension has been told to use Pool A. What else do I need to do to make this phone grab an outside line when the receiver is picked up? I have other phones in the building that have Lines mapped to the buttons on the phone and those lines do work. I just can't seem to get the M7100 to grab a line when the receiver is picked up.