Fios Power Supply and Battery Backup, originally uploaded by JoshB.
The power supply had to be mounted inside the garage, as well as the attached battery backup unit. The battery should be good for 8-10 hours in a power failure, and needs to be replaced about once a year at a cost of $22.
The battery backup is necessary to keep phone service running in the event of a power outage. With copper, line voltage is provided by the same line as the phone signal, but you can’t provide power over fiber optic line, thus the need for a battery backup.
If I put my wireless router on a UPS, I could theoretically also still have fiber broadband connectivity during a power outage. I’ll have to test that one out.
Links to:
What are the specs (or part number) of the UPS Fios installs?