Data Sheet

SIM900 AT Commands Set
SIM900_ATC_V1.00 174 15.01.2010
8.2.9 AT+CSTT START Task And Set APN、USER NAME、PASSWORD
AT+CSTT Start Task And Set APN、USER NAME、PASSWORD
Test Command
AT+CSTT=?
Response
+CSTT: "APN","USER","PWD"
OK
Read Command
AT+CSTT?
Response
+CSTT: <apn>,<user name>,<password>
OK
Parameters
See Write Command
Write Command
AT+CSTT=<apn
>,<user name>,<
password>
Response
OK
ERROR
Parameters
<apn> a string parameter(string should be included in quotation
marks) which indicates the GPRS access point name
<user name> a string parameter(string should be included in quotation
marks) which indicates the GPRS user name
<password> a string parameter(string should be included in quotation
marks) which indicates the GPRS password
Execution
Command
AT+CSTT
Response
OK
ERROR
Reference Note
z The write command and execution command of this command is valid
only at the state of IP INITIAL. After operating this command, the
state will be changed to IP START.
8.2.10 AT+CIICR Bring Up Wireless Connection With GPRS Or CSD
AT+CIICR Bring Up Wireless Connection With GPRS Or CSD
Test Command
AT+CIICR=?
Response
OK
Execution
Command
AT+CIICR
Response
OK
ERROR
Reference Note
z AT+CIICR only activates moving scene at the status of IP START，