Power Source; The +12V Dc Input Power Supply - Cisco VG224 - Analog Phone Gateway Hardware Installation Manual
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Chapter 2
Planning Your Installation
Power Source
A Cisco VG224 voice gateway with AC power supply autoselects either 100–127 volt or 200–240 volt
operation. AC versions include a 6-foot (1.8-meter) electrical power cord. (A label near the power cord
indicates the correct voltage, frequency, current draw, and power dissipation.)
The Cisco VG224 voice gateway chassis provides inputs for both AC and DC power. Design your
Caution
installation to use only one type of power. Do not 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.
If you suspect that your AC power is not clean—if lights flicker often or there is machinery with large
motors nearby—have a qualified person test the power. Install a power conditioner if necessary.
Warning
Do not work on the system or connect or disconnect cables during periods of lightning activity.
Statement 1001
Read the installation instructions before you connect the system to its power source. Statement 1004
Warning
This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that
Warning
the protective device is rated not greater than:120 VAC, 15A U.S. (240 VAC, 10A international) Statement
1005
The device is designed for connection to TN and IT power systems. Statement 1007
Warning
Warning
This unit is intended for installation in restricted access areas. A restricted access area can be
accessed only through the use of a special tool, lock and key, or other means by security. Statement
1017
The +12V DC Input Power Supply
The +12V DC power connector to use with the Cisco VG224 voice gateway is the Molex Mini-Fit Jr.
5557 series, 8 circuit dual row (Molex P/N 39-01-2085). The VG224 +12V DC power input was
designed to be used with an external UPS system, and it has status signals that are reported to the VG224.
Table 2-1
OL-5006-04
shows the connector pin assignment for the +12V DC power connector pin assignment.
Location and Mounting Requirements
Cisco VG224 Voice Gateway Hardware Installation Guide
2-3
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Troubleshooting
