Nortel Meridian SL-100 Reference Manual page 72

9-6 Hardware options
next logical set of feature keys shifting through the display. Visual indicator
shows which page (or layer) of self-labeled programmable feature keys is in
use.
Note: The first key of the DBA maps to Key 33.
Use SERVORD commands provision the DBA as a line option. Once a DBA
has been added to a set, feature/DNs may be assigned to the extra keys. The
MSL-100 switch uses a key map to download the DBA key assignments to the
set. The DBA firmware handles the self-key labeling. The self-key label can be
up to 10 characters in length
Note: Only one DBA can be added onto a either an M3904 or M3905 set
only.A DBA cannot be combined with a KBA.
Figure 9-2 shows the DBA.
Figure 9-2 DBA expansion module
555-4001-136 Standard 04.02 May 2001