Nortel Meridian SL-1 Supplementary Manual page 29

11 Reestablish normal service on the system as soon as it is determined
that trunk connections can be made to an attendant console or other
suitable telephone. To restore normal service, set the line transfer
switch on the QPC84 circuit packs to OFF or 0.
• Using the appropriate overlay programs, obtain printouts of all TN
assignments and system features and compare with the printouts
obtained before converting.
12 Set the ENB/DIS switch on all the QPC84 circuit packs to ENB.
13 If required, remove the tape unit or the QMM38 Mass Storage Unit (if
equipped) and shelf from the cabinet.
14 Install cabinet covers or doors and dispose of surplus equipment.
Upgrading LE, A, M, MS to Option 21 2-21
Shelf upgrades to Meridian 1 553-3001-253