Figure 3: NT4N41 Core/Network module (Large System)
Remove the module cover for card installation
To remove the covers from the modules with unused card slots, follow the procedure below.
Refer to Figure 4: Module cover locking latches on page 21.
1. Use a flat-blade screwdriver to unlock the left latch on the front of the cover by
turning the screw 1/4 turn clockwise.
2. Use a flat-blade screwdriver to unlock the right latch on the front of the cover by
turning the screw 1/4 turn counterclockwise.
3. While holding the cover so it does not fall off, slide the latches toward the center of
the cover.
4. Pull the cover toward you and lift it away from the module.
5. Place the cover in a safe place away from the working area to avoid damaging it.
6. Repeat steps 1 through 5 for each cover requiring removal.
Installing ISDN BRI hardware
20 ISDN Basic Rate Interface Installation and Commissioning March 2011
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