User Manual

Cinterion
®
ELS31-V/ELS51-V Hardware Interface Overview
3 Operating Characteristics
19
ELS31-V_ELS51-V_HIO_v00.502 2015-12-07
Confidential / Preliminary
Page 18 of 35
3 Operating Characteristics
3.1 Operating Modes
The table below briefly summarizes the various operating modes referred to throughout the
document.
Table 4: Overview of operating modes
Mode Function
Normal
opera-
tion
LTE IDLE No data transfer is in progress and the USB connection is suspended
by host (or is not present) and no active communication via ASC0/
ASC1. In IDLE mode, the software can be active or in SLEEP state.
LTE DATA LTE data transfer in progress. Power consumption depends on network
settings and data transfer rate.
Power
Down
Normal shutdown after sending the power down command. Software is not active. Inter-
faces are not accessible. Operating voltage remains applied.
Airplane
mode
Airplane mode shuts down the radio part of the module, causes the module to log off from
the LTE network and disables all AT commands whose execution requires a radio connec-
tion.
Airplane mode can be controlled by AT command (see [1]).
In Airplane mode, the software can be active or in SLEEP state.