User's Manual
ITC2100-NA Operation and Service Manual Version 1.0
© SWISSPHONE Wireless AG
Page 103 of 129
7.2.2 Battery Operation (No Mains)
Fig. 7-1: ITC2100 operation when the battery voltage level sinks below a predetermined level
If the mains power fails the ITC2100 is supplied automatically by the batteries (if connect-
ed). If, during battery operation, the battery voltage falls below 10.6V, the ITC2100 is shut
down until mains power returns.
As soon as the ITC has mains power again, the power supply unit is charging the batteries.
1.5 minutes later the ITC boots and continues charging the batteies.
If required (no mains and battery voltage level below 10.6V) the ITC2100 can be put back
into operation by replacing the batteries (see chapter 5.10), whereas the voltage level of the
new batteries needs to be at least 11.7V.
ITC2100 in operation
ITC2100 not in operation
Sinking battery voltage level
13.8V
10.6V
Green LED blinking (=battery operation)
Yellow LED off (=battery voltage level OK)
After 40sec ITC shuts down
Green LED off (=no sufficient power)
Yellow LED on (=battery low)
40sec
later