Black Box ACTIVE STAR HUB RJ-11 - Manual (Page 11)

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ACTIVE STAR HUB
3. Active Pair Setup
IMPORTANT!
If you haven’t already done so, please read the safety guidelines listed
on page 1.
The factory default active pair setting for the Active Star Hub is pins 4/5. The
default and other possible configurations are shown on the identification label
located on the rear panel.
Figure 3-1. Identification Label.
You can reconfigure the active pair by following this procedure:
1. Disconnect all power to the unit.
2. Remove the top cover screws located on the rear panel.
3. Gently slide the top cover back one inch.
4. Hold the top cover and tilt it up.
5. Reconfigure the jumpers (located behind the RJ connectors on the circuit
board) as required. Settings for polarity and active pair assignment are shown
in Figure 3-2. All jumper settings must be identical.
MODEL xxxxxx
PINS 4/5 3/6 1/2
S/N xxxxxxxxxx
IC207A/8A-Manual 7/12/00 9:31 AM Page 10