Important Information; Power Outages; Back-Up Battery; Device Compatibility - Zte MF279T User Manual

Important Information

Power Outages

The MF279T has a back-up battery in the event of a power outage with talk time of approximately XXX
minutes and standby time of approximately XXX hours depending on environmental factors. In the event
of a power outage (commercial power no longer being available), the MF279T will automatically begin
using the back-up battery, provided there is sufficient battery charge left. If there is no battery charge at
the time of the power outage, the device will not be operable.
To make calls using your back-up battery, you must plug a corded phone or landline phone into the
"Phone 1" or "Phone 2" port on the MF279T.
The MF279T will disable Wi-Fi to conserve power while using the back-up battery when there are no
devices connected. To re-enable Wi-Fi while using the back-up battery, slide the ON/OFF button to the
ON position. Or, if power is available, plug the MF279T into an electrical wall outlet.
If you experience a power outage and your back-up battery is fully depleted, it will be necessary to restart
your device when power is restored by sliding the ON/OFF button to the ON position until the power light
stays solid green.

Back-up Battery

A new back-up battery should last for approximately 5 years, but the life of any back-up battery can be
adversely affected by environmental conditions like moisture and heat. To get the longest service from
your back-up battery, do not place the MF279T in direct sunlight or in wet or extremely cold
environments.
To test the condition of your back-up battery, make sure the MF279T is powered on. Unplug the MF279T
from the wall power outlet. If the Power LED immediately starts blinking red, then the back-up battery
may need to be replaced. If the MF279T does not remain on (no LEDs are lit) once unplugged from the
wall power outlet, then the back-up battery needs to be replaced.
It is recommended that you test your back-up battery charge at least once per year and replace if
necessary.

Device Compatibility

The MF279T is not compatible with wireless messaging services, home security systems, fax service,
medical alert systems, medical monitoring systems, credit card machines, IP/PBX Phone systems, or
dial-up Internet service. May not be compatible with your DVR/Satellite systems, please check with your
provider. DSL customers should contact their provider before transferring a phone number to ensure
uninterrupted DSL Internet service.
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