Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 220 12/24/2010
Displays a
string
explaining the
error in more
details.
AT+ CM EE= 2
AT+CSCS="TEST"
ERROR
OK
+CME ERROR: operation not allowed
Store the
current
configuration
in nonvolatile
memory. When
the board is
reset, the
configuration
changes from
the last session
are loaded.
ATE0&W
AT
[Reset the board]
AT
ATE1&W
AT
OK
[No echo]
OK
[No echo]
OK
[No echo]
OK
[Echo on]
OK
Set the ME to
minimum
functionality
AT+ IP R？
AT+CFUN=0
AT+IPR = 115200
AT+ IP R?
AT+CFUN=0
+IPR:0
OK
OK
+CPIN: NOT READY
OK
+IPR:115200
OK
+CPIN: NOT READY
ME has entered full functionality mode. AT+C FU N? +CFUN:1
OK
13.2 SIM Commands
Demonstration Syntax Expect Result
List available
phonebooks, and
select the SIM
phonebook.
AT+CPBS=? +CPBS:
("MC","RC","DC","LD","LA","ME","SM","FD",
"ON","BN","SD","VM","EN")
OK