BIX Loop Block
You can only (reliably) terminate one wire in a BIX insulation displacement (IDC) punch-down block, but you may sometimes need to bridge or parallel more jumpers (eg, Algo Auxbox's). One way is to build a "Loop Block" (also known as the "loopy, loopy thing").
BIX Loop Block

Source: www.nordx.com
The image shows (3x) 4 pairs in parallel (bridged) by 3 wire loops.
Note: The loops are at the "rear", the cross-connects are at the "front", as normal.
To construct a loop-block, use some jumper wire and a spare BIX block:
- Punch the first pair with the BIX tool in the CUT position.
- Rotate the BIX tools "Select button" to the NO-CUT position.
- Loop the jumper wire into the next pair, and punch without cutting.
- Continue to loop and punch as required, without cutting.
- For the last pair, return the "Select button" to the CUT position to punch.