Power Effect On Device State; Monitoring Power-In Voltage - Sierra Wireless AirLink GX400 User Manual

Inputs, Relay Outputs, and Power Status

Power Effect on device State

Once the transition from powered on to low-power mode starts, the device will
change state to AT mode. This results in the current mode being gracefully
terminated. For the brief period when the device is preparing for low-power mode,
the device will remain in AT mode. At that time, it won't auto-answer, ATD will fail,
etc. Once low-power mode is entered, the device will then discard any data
received on the host port.
When the device is woken from low-power mode, the same behavior occurs as
power on. The device starts in AT mode, and then after 5 seconds will enter the
default start-up mode as it is configured for the device.

Monitoring Power-In Voltage

The current status of the power-in voltage can be monitored in ACEmanager.
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