A new customer of mine moved into an existing space and remodeled. They ordered 4 phone lines from at&t which were brought into the suite and 'tagged' on a 25 pair 66 block (circled in red)...no demarc, no bridge clips, just wires. I did not take a "before" picture but there were myriad 25 pair cables punched down, and naturally they did not bother to tag the lines on the FEED, but on those random abandoned cables!
The other cables with a red ? presumably also lead to the basement main phone room which has 2 large cabinets full of old 400 series cards.
[Linked Image from i35.photobucket.com]

Jeff Moss

Moss Communications
Computer Repair-Networking-Cabling
MBSWWYPBX, JGAE