Cisco VG224 Hardware Installation Guide - Page 54

Connecting Backup Power Chapter 3 Installing the Cisco VG224 Voice Gateway Figure 3-15 Connecting a Battery Backup to a DC-Powered Cisco VG224 AC wall plug Battery backup Cisco VG224 voice gateway VG224-24FXS 103120 DC plug Caution Use a backup battery only if you are not using AC to power your Cisco VG224 voice gateway. 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. Note We recommend a 12-volt automotive battery if you require longer periods of battery backup (up to 8 hours). Figure 3-16 shows the DC power connector. See Table 3-5 for pinout information for the DC power connector on the Cisco VG224 voice gateway. Table 3-5 Pinouts for DC Power Connector Pin Number 1 2 3 4 Descriptions GND (input enable) +12V (power) REP_BAT (replace battery) GND (power return) Pin Number 5 6 7 8 Descriptions ON_BAT (battery is on) +12V (power) LOW_BAT (battery is low) GND (power return) Figure 3-16 DC Power Connector VG224-24FXS Pin 5 Pin 1 103121 3-22 Cisco VG224 Voice Gateway Hardware Installation Guide OL-5006-04