
2-4
Cisco VG224 Voice Gateway Hardware Installation Guide
OL-5006-04
Chapter 2 Planning Your Installation
Location and Mounting Requirements
Caution
Signal pins 1, 3, 5, and 7 should be tied low to prevent the Cisco VG224 voice gateway from reporting
faults on the DC power. If the +12V DC option for powering VG224 is used the AC power must not be
used.
Figure 2-1
shows the +12V DC power connector.
Figure 2-1
+12V DC Power Connector
Table 2-1
+12V DC Connector Pin Assignment
Pin
Direction
Description
SW Register 0x4A80_0038 Definition
1
Input
Enable (tie low)
—
—
2
Input
+12V (power)
—
—
3
Output
REP_BAT (tie low)
Bit 6: REP_MIS_BAT
Battery Missing:
Fail 1 = missing
Fail 0 = good
4
Input
GND (power return)
—
—
5
Output
ON_BAT (tie low)
Bit 4: BAT_ON
Battery on/off:
Status 1 = off
Status 0 = on
6
Input
+12V (power)
—
—
7
Output
LOW_BAT (tie low)
Bit 5: BAT_LOW
Battery power:
Level status 1 = low
Level status 0 = okay
8
Input
GND (power return)
—
—
103121
VG224-24FXS
Pin 1
Pin 5