Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 226 12/24/2010
OK
Send SMS using Chinese characters AT+CSMP=17,167,2,
25
AT+CSCS="UCS2"
AT+CMGS="0031003
300390031003800310
038003x003x003x003
x"
>4E014E50<Ctrl+Z>
OK
OK
+CMGS:36
OK
13.8 GPRS Commands
Demonstration Syntax Expect Result
Establish a GPRS context. Setup modem driver
Setup dial up
connection with *99#
Run internet explorer
Should be able to surf the
web using Internet explorer.
There are two GPRS Service Codes for
the ATD Command: Value 88 and 99.
Establish a connection by service code
99.
Establish a connection by service code
99 and using CID 1
ATD*99#
ATD*99***1#
CONNECT
CONNECT
Check if the MS is connected to the
GPRS network
Detach from the GPRS network
Check if the MS is connected to the
GPRS network
AT+ CG ATT?
AT+CGATT=0
AT+ CG ATT?
+CGATT:1
OK
OK
+CGATT: 0
OK
Check the class of the MS AT+ CG CLA SS ? +CGCLASS:B
OK
Establish a context using the terminal
equipment: defines CID 1
and sets the PDP type to IP, access
AT+CGDCONT=1,
"IP","CMNET"
ATD*99#
OK
CONNECT