AT&T MERLIN LEGEND Release 2.0 Installation Section page 96

Installing the Control Unit
5. Swing the module into the slot and firmly push the module into the
carrier until it locks into place.
CAUTION:
To avoid damage, do not force the module. If the module
does not insert easily, press the bottom-rear locking tab,
remove the module, and inspect the module and carrier for
damage or obstruction.
If there is no damage and no obstruction, reinsert the module.
A damaged carrier or module must be replaced.
6. After all modules have been installed, label all jacks with the numbered
labels provided with the feature module:
Trunk labels: green numbers on off-white
Telephone labels: blue numbers on off-white
See Figure 2-17 for the locations of trunk jacks and telephone jacks on
each module, and label them as described in the procedure that
follows.
Installing the Modules
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