Nortel 7400 Hardware Installation page 362

362 Chapter 39 Hardware procedures
NN10600-175 6.1S2
9 Holding the end of another flexi-cable that has one D-sub connector (not
two), align and plug the D-sub into the third D-sub connector on the
underside of the sparing panel. Allow the cable to hang freely.
10 Repeat step 9 for the remaining 3 flexi-cables.
11 For each remaining sparing panel in the 1:n series up to but not including
the Main A (bottom) panel, repeat step 5 to step 11 continuing
downwards.
12 Install the last (bottom) RJ-45 sparing panel the same as the previous
one. Below the panel, leave a vertical space equal to the height of 3 panel
faceplates. Allow the flexi-cables from the panel above to be pushed back
by this panel.
13 Connect and fasten the hanging flexi-cable D-subs from the sparing panel
above the Main A into the underside of Main A. Fasten each D-sub as
before except for each third D-sub connector, fasten them to the posts
using the hex fasteners (not the stud fasteners).