Issue 2.0
2-2 Hardware Installation <US Only>
1.1 Busying Out Extension/Line Blades
The extension/trunk blades may "busy-out" idle circuits. Extensions/lines cannot
make or receive calls during this condition. Calls in progress before the blade is
"made-busy" are not affected. The blade can be pulled out without interrupting a
call in progress.
An extension/line blade LED status:
Normally flashes
Lights steady when "made-busy" when an extension/line is in use
Goes out when the all extensions/lines are "made-busy" (idle)
SECTION 2 INSTALLING AN EXTENSION OR TRUNK BLADE
2.1 Installing the Blades
To install an extension/trunk blade with the system running:
1. Insert the blade in the guide rail and push the blade securely into position.
Tighten the thumb screw on each side of the blade.
2. The Status LED starts flashing when the blade starts processing (15
seconds).
Figure 2-1 Inserting Blades in the 19” Chassis
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