BGS2-E/BGS2-W Hardware Interface Overview
3.1 Operating Modes
18
BGS2_HIO_v01.300
Page 18 of 29
2011-03-08
Confidential / Released
3.1
Operating Modes
The table below briefly summarizes the various operating modes referred to in the following
chapters.
Table 7:
Overview of operating modes
Normal operation GSM/GPRS SLEEP
Various power save modes set with AT+CFUN command.
Software is active to minimum extent. If the module was
registered to the GSM network in IDLE mode, it is registered
and paging with the BTS in SLEEP mode, too. Power sav-
ing can be chosen at different levels: The NON-CYCLIC
SLEEP mode (AT+CFUN=0) disables the AT interface. The
CYCLIC SLEEP modes AT+CFUN=7 and 9 alternatingly
activate and deactivate the AT interfaces to allow perma-
nent access to all AT commands.
GSM IDLE
Software is active. Once registered to the GSM network,
paging 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
network settings and GPRS configuration (e.g. multislot set-
tings).
GPRS DATA
GPRS data transfer in progress. Power consumption
depends on network settings (e.g. power control level),
uplink/downlink data rates, GPRS configuration (e.g. used
multislot settings) and reduction of maximum output power.
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 accessible.
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.
