TC65 Terminal Hardware Interface Description
Confidential / Released
s
TC65 Terminal_HD_V02.000b
Page 23 of 65
2007-02-19
3.3 Operating
Modes
The table below briefly summarizes the various operating modes referred to in the following
chapters.
Table 7: Overview of operating modes
GSM / GPRS SLEEP Various power save modes set with AT+CFUN
command.
Software is active to minimum extent. If the Terminal
was registered 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=7
and 9 alternatingly activate and deactivate the AT
interfaces to allow permanent access to all AT
commands.
GSM IDLE
Software is active. Once registered to the GSM network
paging with BTS is carried out. The Terminal is ready to
send and receive.
GSM TALK
Connection between two subscribers is in progress.
Power consumption depends on network coverage
individual settings, such as DTX off/on, FR/EFR/HR,
hopping sequences, antenna.
GPRS IDLE
Terminal is ready for GPRS data transfer, but no data is
currently sent or received. Power consumption depends
on network settings and GPRS configuration (e.g.
multislot settings).
Normal operation
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, after pressing the
ON/OFF key or after the activation of the ONOFF line.
The RTC works continuously, but the software is not active. Interfaces are not
accessible.
Airplane mode
Airplane mode shuts down the radio part of the module, causes the Terminal to
log off from the GSM/GPRS network and disables all AT commands whose
execution requires a radio connection.
Airplane mode can be controlled by using the AT commands AT^SCFG and
AT+CALA:
With AT^SCFG=MEopMode/Airplane/OnStart the Terminal can be configured to
enter the Airplane mode each time when switched on or reset.
The parameter AT^SCFG=MEopMode/Airplane can be used to switch back and
forth between Normal mode and Airplane mode any time during operation.
Setting an alarm time with AT+CALA followed by AT^SMSO wakes the module
up into Airplane mode at the scheduled time.
