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2.5.7
Emergency Power Module (NSP)
The emergency power module permits continued use of the PABX to make
calls on loss of the 230 V AC power supply. The terminal with which you can
make phone calls on loss of power must also be equipped with an "emergency
power" function.
Attention! you can install only one NSP in the PABX.
The NSP (emergency power supply) module (Figure 35) is plugged into the
opening of the PABX marked on page 16 in Figure 1. Ensure that all of the
contact pins are plugged into the socket connector and that they are not bent.
So c k et c o n n ec to r
M o u n tin g h o les
a1 a2 b 2 b 1
S 0 - TL N 1 IN
S 0 - TL N 1 O U T
IS D N EXT IN
IS D N EXT O U T
Fig. 34: Emergency power module
The external ISDN connection and the internal ISDN connection 1 (S01:INT
with the elmeg C48m / elmeg C88m or S0 Int with the elmeg C46e) for
emergency power supply are connected via the NSP (see Figure 36). Interfacing
of the external and internal ISDN connections is effected using the connecting
cables supplied with the system.
45
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