Nortel DMS-100 Series Replacement Procedures page 189

b Open the locking levers on the card to be replaced and gently pull the
card toward you until it clears the shelf.
c Ensure the replacement card has the same PEC, including suffix, as the
card you just removed.
8 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
in an RSC-S (DS-1) Model B RMM
1-157
NT2X06
(continued)