Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 192 23.06.2010
AT+CSCS=”TEST”
AT+ CM EE= 2
AT+CSCS=”TEST”
OK
ERROR
OK
+CME ERROR: operation not allowed
Storing 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 FUN? +CFUN:1
OK
10.2 SIM Commands
Demonstration Syntax Expect Result
Listing available
phonebooks, and
selecting the SIM
phonebook.
AT+CPBS=?
AT+CPBS="SM"
+CPBS:
("MC","RC","DC","LD","LA","SM","FD",
"ON","BN","SD","VM","EN")
OK
OK
Displaying the ranges AT+CPBR=? +CPBR: (1-250),40,14