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Mode
Description
Active
The module is ready to communicate with an
external device by means of the application
interfaces unless power saving configuration is
enabled by the AT+UPSV command (see
sections 1.5.1.4, 1.9.1.4 and to the u-blox AT
Commands Manual [2]).
Connected
A voice call or a data call is in progress.
The module is ready to communicate with an
external device by means of the application
interfaces unless power saving configuration is
enabled by the AT+UPSV command (see
sections 1.5.1.4, 1.9.1.4 and the u-blox AT
Commands Manual [2]).
Table 5: Module operating modes descriptions
Figure 2 describes the transition between the different operating modes.
Incoming/outgoing call or
other dedicated device
network communication
Connected
No RF Tx/Rx in progress,
Call terminated,
Communication dropped
Figure 2: Operating modes transition
UBX-16010573 - R12
Not
powered
Switch ON:
Power off
• Apply VCC
Switch ON:
• PWR_ON
• RTC alarm
• RESET_N
Active
LARA-R2 series - System Integration Manual
Transition between operating modes
When the module is switched on by an appropriate power-on event
(see 2.3.1), the module enters active mode from not-powered or
power-off mode.
If power saving configuration is enabled by the AT+UPSV command,
the module automatically switches from active to idle mode whenever
possible and the module wakes up from idle to active mode in the
events listed above (see idle to active transition description).
When a voice call or a data call is initiated, the module switches from
active mode to connected mode.
When a data or voice connection is initiated, the module enters
connected mode from active mode.
Connected mode is suspended if Tx/Rx data is not in progress, due to
connected discontinuous reception and fast dormancy capabilities of
the module and according to network environment settings and
scenario. In such case, the module automatically switches from
connected to active mode and then, if power saving configuration is
enabled by the AT+UPSV command, the module automatically switches
to idle mode whenever possible. Vice-versa, the module wakes up from
idle to active mode and then connected mode if RF Tx/Rx is necessary.
When a data connection is terminated, the module returns to the
active mode.
Remove VCC
Switch OFF:
• AT+CPWROFF
• PWR_ON
If power saving is enabled
and there is no activity for
a defined time interval
Any wake up event described
in the module operating
modes summary table above
Idle
System description
Page 18 of 157
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