User Instructions

BG2-E/BG2-W Hardware Interface Overview
3.1 Operating Modes
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BG2_HIO_v01.000 Page 18 of 30 2010-8-30
Confidential / Released
3.1 Operating Modes
The table below briefly summarizes the various operating modes referred to in the following
sections.
Table 7: Overview of operating modes
Mode Function
Normal operation GSM / GPRS
SLEEP
Various powersave modes set with AT+CFUN command.
Software is active to minimum extent. If the module was reg-
istered to the GSM network in IDLE mode, it is registered and
paging with the BTS in SLEEP mode, too. Power saving can
be chosen at different levels: The NON-CYCLIC SLEEP mode
(AT+CFUN=0) disables the AT interface. The CYCLIC SLEEP
modes AT+CFUN=7and 9 alternatingly activate and deacti-
vate the AT interfaces to allow permanent access to all AT
commands.
GSM IDLE Software is active. Once registered to the GSM network, pag-
ing with BTS is carried out. The module is ready to send and
receive.
GSM TALK Connection between two subscribers is in progress. Power
consumption depends on network coverage individual set-
tings, such as DTX off/on, FR/EFR/HR, hopping sequences,
antenna.
GPRS IDLE Module is ready for GPRS data transfer, but no data is cur-
rently sent or received. Power consumption depends on net-
work settings and GPRS configuration (e.g. multislot settings).
GPRS DATA GPRS data transfer in progress. Power consumption depends
on network settings (e.g. power control level), uplink / down-
link data rates and GPRS configuration (e.g. used multislot
settings).
Power Down Normal shutdown after sending the AT^SMSO command. Only a voltage regulator
is active for powering the RTC. Software is not active. Interfaces are not accessi-
ble. Operating voltage (connected to BATT+) remains applied.
Alarm mode Restricted operation launched by RTC alert function while the module is in Power
Down mode. Module will not be registered to GSM network. Limited number of AT
commands is accessible.