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TC45 AT Command Set
2.8 AT+CFUN
s
m
obile
TC45_ATC_V02.02
Page 38 of 461
4/16/04
Confidential / Released
2.8
AT+CFUN Set phone functionality
This command serves to control the functionality level of the ME. It can be used to reset the ME, to choose one
of the SLEEP modes or to return to full functionality.
Intended for power saving, SLEEP mode reduces the functionality of the ME to a minimum and thus minimizes
the current consumption. SLEEP mode falls in two categories:
• NON-CYCLIC SLEEP mode
• and CYCLIC SLEEP modes, selectable as
= 5, 6, 7 or 8.
NON-CYCLIC SLEEP mode permanently blocks the serial interface. The CYCLIC SLEEP mode, however, is a
dynamic process which alternatingly enables and disables the serial interface. The major benefit of all CYCLIC
SLEEP modes is that the serial interface remains accessible and that, in intermittent wake-up periods, characters
can be sent or received without terminating the selected mode. The best choice is using
= 5, 6, 7 or 8,
since in these modes TC45 automatically resumes power saving, after you have sent or received a short mes-
sage or made a call.
=5 or 6 do not offer this feature to the same extent and are only supported for com-
patibility with earlier releases. In all CYCLIC SLEEP modes, you can enter
=1 to permanently wake up
TC45 and take it back to full functionality. Please refer to section
for a summary of all SLEEP modes and
the different ways of waking up the module.
For CYCLIC SLEEP mode (
= 5, 6, 7 or 8) both the ME and the application must be configured to use hard-
ware flow control. This is necessary since the CTS signal is set/reset every time when the ME listens to a paging
message from the base station. This is the way how the module indicates to the application when the UART is
active. For detailed information on the timing of the CTS signal refer to
. The default setting of hardware flow
control is
0 which must be altered to
3. For use after restart you are advised to add it to the user profile
saved with
If both interfaces ASC0 and ASC1 are connected, hardware flow control must be set in either application.
SLEEP mode management if Java is started: The Java Virtual Machine remains active, but also enters the
SLEEP mode. AT commands can be sent from the Java application to the serial interface, no matter which
SLEEP mode was selected. This allows you to control the ME even if it is in NON-CYCLIC SLEEP mode
Syntax
Test Command
AT+CFUN=?
Response(s)
+CFUN:
s)
OK
Read Command
AT+CFUN?
Response(s)
+CFUN:
OK