Data Sheet

SIM900 AT Commands Set
SIM900_ATC_V1.00 195 15.01.2010
300390031003800310
038003x003x003x003
x”
>4E014E50<Ctrl+Z>
OK
10.8 GPRS Commands
Demonstration Syntax Expect Result
To 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
<data>
CONNECT
To check if the MS is connected to the
GPRS network
Detach from the GPRS network
To 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
To check the class of the MS AT+ CG CL A SS ? +CGCLASS:B
OK
Establish a context using the terminal
equipment: defines CID 1
and sets the PDP type to IP, access
point name and IP address aren’t set.
AT+CGDCONT=1,”I
P”
ATD*99#
OK
CONNECT
<data>
Cancel a context using the terminal
equipment
Pause data transfer and enter Command
mode by +++
Stop the GPRS data transfer
AT+CGDCONT=1,
“IP”
ATD*99#
+++
ATH
OK
CONNECT
<data>
OK
OK