Nortel DMS-100 Series Reference Manual page 53

Table 5-1xxx
LPA system components
LPA component
PEC
NT3X83BA
NT3X89EA
If Version 2 and EAS panels are used with LPA system components, the
following rules apply:
The Version 2 and EAS panels must be physically located after the LPA
panels.
The J1 shorting strap on the AXU panel must be removed.
Visual alarm panels Four alarm panels (NT0X63LA, NT0X63LB,
NT0X63MA, and NT0X63MB) replace 15 units in earlier alarm system
versions. Table 5-1 identifies the units replaced. The NT0X63LA (see
Figure 5-1) provides the ACD functions and the NT0X63LB (see Figure
5-2) provides the AD functions. Both versions use the same printed circuit
board. The differences between the two versions are as follows:
The NT0X63LA contains a volume control.
The NT0X63LB does not contain the switches that are on the
NT0X63LA.
DMS-100 Family Alarm System Description Reference Manual BASE12
(continued)
Description
Alarm transfer/sender circuit card
Alarm cross-connect (AXU) panel
Low Power Alarm system 5-5
Replaces
NT3X84AA.
NT3X84AB
NT3X89CA