Nortel DMS-100 Series Replacement Procedures page 345

in an RSC-S (PCM-30) Model A RMM
c Ensure the replacement card has the same PEC, including suffix, as the
card you just removed.
9 Open the locking levers on the replacement card.
a Align the card with the slots in the shelf.
b Gently slide the card into the shelf.
DMS-100 Family NA100 Card Replacement Procedures Volume 4 of 7 LET0015 and up
XPM card replacement procedures 1-313
NT2X11
(continued)