Avaya G650 Installing page 78

Figure 32: MCC1 Media Gateway on long-term battery holdover alarm
(rear view)
C
B
A
D
E
External alarms
G
connector (RJ21)
These alarms then should be tested using the
equipment room AC breaker for the GMCC is shut off, this 01minor (AC) test will fail.
Hooking up sensor cable and batteries
required for every MCC1 Media Gateway requiring holdover. The 24-cell battery cabinet must have a
float voltage of 54.2 VDC. There are two versions of the cable (see
on page 79).
To hook up the sensor cable and batteries:
1
Connect the -48 VDC cable to the large battery connector. See
(J58890CH),
2
Connect the -48 VDC RETURN cable to the ground terminal block. This is a positive ground
system where the +48 V battery lead is called -48 VDC RETURN and it will be connected to the
cabinet frame ground.
3
Connect the temperature sensor cable from the battery cabinet to J20 (-48 VDC BATT) on the rear
of the power distribution unit.
78
MCC1
AUX
AUX
B25A
cables
J58890CH
B25A
cable
on page 79.
Main Distribution Field
(Cross connect)
External alarm
AUX connector
connector
Signal Pin Signal
Ap2 (minor) 27 ACF2-
Ap2 ground 2 ACF2+
test eda-external-device-alarm all
When using large battery holdover, 1 battery cabinet is
Table 9, Temperature sensor cables,
Installing the Avaya G650 Media Gateway
Pin
9
34
command. When the
Figure 33, Power distribution unit
June 2004