Ups Power Supply; Figure 5.Uninterruptible Power Supply (Ups) - ADTRAN Total Access 300 Series Installation And Maintenance Manual

• 30 mA loop current
• Integrated GR‐909 testing

UPS Power Supply

The power feed is 12 VDC. The ONT utilizes an uninterruptible power supply (UPS). An UPS
(see Figure 5) is a battery backup system designed to continue providing power when the
primary power source is lost. When the UPS senses a loss of power from the primary source,
the backup battery is activated to provide power for a short period of time.
Power is supplied to the ONT by an UPS local power source with battery backup that utilizes
the AC power at the customer premises. The unit powers the ONT and functions as a battery
backup supplying continuous 12 VDC. It contains one sealed, lead‐acid battery for power
backup.
If the battery is disconnected, the ONT is not protected from power outages, and will send a
"Battery Missing" alarm to the OLT.
Install the UPS per the specifications recommended by the manufacturer.
6418770XGX-5B
ONT
12V DC
Alarms
Figure 5. Uninterruptible Power Supply (UPS)
UPS
Power Converter
Battery Charger
Alarms
Battery
Backup
Components and Interfaces
85V AC-
264V AC
13