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Welcome to FiOS Equipment
FiOS Equipment
Optical Network Terminal (ONT)
Think of this as a kind of electronic translator. FiOS sends signals over our
state-of-the-art network using laser-generated pulses of light. The ONT,
installed either outside or inside your home, converts those pulses into
electric signals.
ONT Power Supply Unit (OPSU)
This unit connects the ONT directly to a grounded electrical outlet in your
home or garage. The OPSU’s green indicator light tells you it’s receiving
power. Make sure it’s plugged in at all times and that the green light is on.
The ONT requires very little power to operate. In fact, it’s as little as what it
would take to operate a couple of night lights.
Battery Backup Unit (BBU)
In case the OPSU is accidentally unplugged, or there’s a commercial power
failure, the BBU is here to help. Depending on the type of ONT installed, your
ONT may have an internal Sealed Lead Acid battery or an external optional
PowerReserve battery backup device. It will give you power for voice service
(not Internet or TV) for up to eight hours (or approximately 20-hour battery
backup time if the PowerReserve is used). It’s installed in a location in your
home or garage where you can easily monitor it. Its audible alarms and
indicator lights tell you whether your service is being powered by your home’s
electricity or the battery.
Good to remember:
• When your BBU needs to be replaced, you can purchase a battery
at most major electronic outlets and home-improvement stores or by
calling Frontier.
Note:
If you have the Frontier supplied Sealed Lead Acid battery, it is designed specifically for use with
the FiOS Network. Use of a battery other than a 12-Volt 7.2 Ah SLA Sealed Lead Acid battery is not
recommended since other battery types may impact the performance of your FiOS services. Frontier is
not responsible for damages that result from use of an improper battery.
• Batteries need to be disposed of properly. Visit www.epa.gov/osw or call
the EPA at 1.202.272.0167 for instructions.
Battery Backup (BBU) Audible Alarms
If there’s a problem with your BBU, an alarm will sound intermittently for a
predefined interval. This will be repeated until you press the Alarm Silence
button. Once you do, be sure to check the lights on the BBU to find the issue.
On the next page are two of the most common reasons for the alarm to
sound—and how you’ll know:
