2.2 Installation of the Hybrid IP-PBX
Connecting Backup Batteries
1.
Turn off the battery switch on the PSU.
2.
Connect the Back-up Battery Cable to a set of 3 identical batteries.
Fuse
Red
Backup Batteries (VRLA 12 V DC x 3)
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Installation Manual
Battery Connector
Back-up Battery Cable
ON
Battery Switch
OFF
Black