AT&T MERLIN LEGEND Installation & Maintenance Manual page 219

Installation
c. Insert the plug end of the 400B or 400B2 adapter into the
wall jack.
d. Plug-the power supply into a 117-VAC outlet.
Note: The combined total length of the D6AP and D8W cords
can be no more than 50 feet.
9. Label the DSS designation cards.
a. Pull the tab at the top of the large plastic cover and rotate
the cover toward you.
b. Remove the cover and the large designation card.
c. Write or type the button assignments on the card. For the
DSS1, use the side of the large card that is labeled 00
through 49. For the DSS2, use the side labeled 50 through
99.
Note: The button assignments on the designation card
should be by extension number, not by logical ID port
number.
d. Replace the card and the plastic cover. Be sure the
coated side of the cover is facing up.
e. Repeat these steps to remove the small plastic cover and
to label the small designation card.
Note: If the MLX telephone to which the DSS is attached is
unplugged from the CU and then again plugged into the CU, the
display on the telephone may disappear. Press the Home button
to bring back the display.
Telephones and Consoles 3-111