RJ-21x would have the Amphenol connected to the clips on the right of a split block. You would use bridging clips down the center. When used as a demarc, telco would feed the left side, customer uses the Amphenol or clips on right.
That sure is a split block, look at the way the clips are turned. Obviously wire wrapped on the back, I have never seen one wired to an Amphenol as you think. I think there are two alarm jacks and they come back on the w/o and w/br. Your CO's are avilable down the left side. Bridging clips haven't been installed below those pairs if there are any more lines.
Pretty damn stupid to use the patch panel that way. The wiring should have been terminated directly on the 66 block instead of that jumper. Sure hope those don't go to a fire panel.
-Hal
