Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 253 2012.12.10
Send SMS using Chinese
characters
AT+CSMP=17,167,0,
25
AT+CSCS="UCS2"
AT+CMGS="0031003300390
031003800310038003x003x0
03x003x"
>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 +C GC LA S S? +CGCLASS:B
OK
Establish a context using the
terminal equipment: defines
AT+CGDCONT=1,
"IP","CMNET"
OK