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Jumper Wires
Jumper wire is a short wire which is used at both CO and SAC boxes to complete an electric circuit or bypass a
break in a circuit.
Figure 13: Jumper Wires
Color code for jumper wire used are as follows:
Yellow/blue or blue/yellow - BC for most circuits
White/blue or blue/white - Alberta for SAC Boxes, UMC’s
Red/green – Alberta for Power Pairs
White/black – Alberta frames
Red/black – Express Power pairs for RDSLAMs, T1 & CLEC circuits with high voltage.
Red/green – Special Services
Working with Jumper wires
Never remove jumpers through the connecting block fanning strips
Remove jumpers from the horizontal side
Remove all clearance jumpers
Do not leave dead jumpers in the rack
Leave 3 to 6 inches of slack
Measure from tip of thumb to tip of little finger with fingers spread
1.3.2 CO Tools
1. Northern Telecom QTH 38b - QTH38B tool used for terminating, bridging, and removing wires from 2-beam
or 3-beam, insulation-slicing, quick-clip terminals found on
QCM486 (MPC) and 391Q connectors, and on Versa blocks with
quick-clip pins.
Quick connect tool lets you install and/or remove
jumpers quickly.
No need to strip jumper wire prior to terminating.
Push out the wire holder. Put the wire in it. Have the
loose end of the wire – the end to be cut off – hanging out of the
yellow side of the tool. Punch down the wire over the block pins.
Use the take-out-hook to remove old jumpers.