For one cable two active pairs?
Ah, I was clearly not in possession of all the facts.
For one service feed cable, with two active pairs, then a
BT84A would be the best choice.
I presume you propose to run a new length of CW1308 cable from each of the two NTE5/A back to the BT84A and make use of the IDCs for those links? Then you could make a one turn loop of the existing service feed cable (thus leaving ample slack for any future adjustments) and connect each pair to its respective screw terminals.