Merlin 3070 Service And Maintenance Manual page 144

On the wall, mark where the bottom of the control unit or
shelf (if the control unit will rest on a shelf) will be.
Screws 1-1/4 inches long come with the jack panel boxes.
Choose one of the following methods for mounting the
boxes (don't mount the boxes yet):
For walls with a sturdy supporting structure (studs or
cross members): Attach boxes directly with the screws
provided.
For hollow walls: Find a board about 3/8 inch thick
and about 2 inches bigger on all sides than the jack
field. (Each jack panel box is 5-1/2 inches long and
6-1/2 inches wide.) Mount the jack panel boxes on the
board then fasten the board to the wall.
Control unit location
2 inches
Mark the position of the first
jack panel box.
Stick a blue dot in the circle
on each jack panel box. The
blue dot distinguishes boxes
for wiring to telephone loca-
tions from jack panel boxes
for other uses (for example,
green dot for line adapters,
yellow dot for auxiliary
equipment adapters).
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