Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 178 12/24/2010
+CSTT: "APN","USER","PWD"
OK
AT+CSTT=?
Parameters
See Write Command
Response
+CSTT: <apn>,<user name>,<password>
OK
Read Command
AT+CSTT?
Parameters
See Write Command
Response
OK
ERROR
Write Command
AT+CSTT=<apn
>,<user
name>,<passwor
d>
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
The write command and execution command of this command is valid only
at the state of IP INITIAL. After this command is executed, 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,