Last week had a customers inhouse IT guy ask if I could "fix" the MOH. Was a boom box that he had connected to the MOH pins on the 66 block. I punched down a solid pair then connected his mini-RCA jack/cable to the solid pair. Took me longer to connect that stranded pair than anything else. VERY thin strands, and the cable had black, white and common bare copper strands that would break if you looked at them wrong. Again, they were hair-like. Finally got a good connection and good sound using one of the colored wires and the bare copper strands--but a person had to be very careful to do it right--any other way --it would not work.