I also congratulate you on asking intelligent questions and using the correct terminology.
I would try to mount, on the surface, a small 66 type terminal in a box at the location of the end of the 25-pair cable.
I would consider THIS 66E3-25 terminal block.
C L I C K It has an Amphenol connector, which in your case would not be required, but its small size and ease of mounting and access to the wires is its advantage. It can be mounted over, and fastened to, a standard single-gang "old work" electrical box, or a single-gang low-voltage ring, in the wall. The 25-pair cable can enter from the rear, and all the customer sees is the gray (or beige) cover, which is paintable.
You would cut down all 25 pairs, and then cut down the local 4-pair wires to whatever pairs you need. It would allow a slight advantage over Scotchlok connectors, and that is that future rearrangements and trouble-shooting would be easier to do.
Last edited by Arthur P. Bloom; 06/20/13 01:45 PM.
