AT&T MERLIN LEGEND Installation & Maintenance Manual page 628

Unit Load Calculation Work Sheet
9. Try to exchange modules between carriers to
reduce the unit loads. for slots 5 and 6 to 27.
(Remember that the 100D, 400, 400 GS/LS, 800,
and 800 GS/LS modules have unit loads of 0.0.)
Repeat steps 1–8 to recalculate unit loads for
new configuration.
Note: Empty slots are not permitted between
modules.
If the exchange reduces the unit load for
slots 5 and, 6 to 27 or less, auxiliary power is
sufficient.
If the exchange does not reduce the unit load
for slots 5 and 6 to 27, install wall power units
for the appropriate number of telephones to
reduce the unit load to 27.
Unit Load Calculation Work Sheet D-9