Westermo GDW-11 - Manual (Page 12)

12 General commands 6615-2220
+CFUN – Set modem functionality
Description:
This command selects the mobile station’s level of functionality. When the application
wants to stop the product with a power off, or if the application wants to force the
product to execute an IMSI DETACH procedure, then it must send:
AT+CFUN=0 (equivalent to AT+CPOF)
This command executes an IMSI DETACH and makes a backup copy of some internal
parameters in SIM and in EEPROM. The SIM card cannot then be accessed. If the mobile
equipment is not powered off by the application after this command has been sent, a
re-start command
AT+CFUN=1
. . .will have to be issued to restart the whole GSM registration process. If the mobile
equipment is turned off after this command, then a power on will automatically restart
the whole GSM process. The AT+CFUN=1 command restarts the entire GSM stack and
GSM functionality: a complete software reset is performed. All parameters are reset to
their previous values if AT&W was not used.
If you write entries in the phonebook (+CPBW) and then reset the product directly
(AT+CFUN=1, with no previous AT+CFUN=0 command), some entries may not be
written (the SIM task does not have enough time to write entries in the SIM card). In
addition, the OK response will be sent at the last baud rate defined by the +IPR com-
mand. With the autobauding mode the response can be at a different baud rate, it is
therefore preferable to save the defined baud rate with AT&W before directly sending
the AT+CFUN=1 command.
Syntax:
AT+CFUN=<functionality level>
Parameters:
<functionality level>
0: Execute an IMSI detach
1: Restart the whole GSM registration process.
Command example Possible responses Note
AT+CFUN? +CFUN: 1 Full functionality indicated
OK Command valid
AT+CFUN=0 OK Detach from network.
AT+CFUN=1 OK Set the full functionality
mode with a complete
software reset