Cisco VG224 - Analog Phone Gateway Hardware Installation Manual page 54

Connecting Backup Power
Figure 3-15 Connecting a Battery Backup to a DC-Powered Cisco VG224
AC wall plug
Use a backup battery only if you are not using AC to power your Cisco VG224 voice gateway. Do not
Caution
use AC and DC power at the same time. If you do, the unit stops operating, and you need to reboot it
with only a single power source.
Note We recommend a 12-volt automotive battery if you require longer periods of battery backup (up to
8 hours).
Figure 3-16
connector on the Cisco VG224 voice gateway.
Table 3-5
Pin Number
1
2
3
4
Figure 3-16 DC Power Connector
Cisco VG224 Voice Gateway Hardware Installation Guide
3-22
Battery backup
shows the DC power connector. See
Pinouts for DC Power Connector
Descriptions
GND (input enable)
+12V (power)
REP_BAT (replace battery)
GND (power return)
Chapter 3
Cisco VG224 voice gateway
VG2 24- 24F
XS
DC plug
Table 3-5 for pinout information for the DC power
Pin Number
5
6
7
8
VG 22 4- 24
FX S
Pin 5
Pin 1
Installing the Cisco VG224 Voice Gateway
Descriptions
ON_BAT (battery is on)
+12V (power)
LOW_BAT (battery is low)
GND (power return)
OL-5006-04