HELP: SIM300 AND GPRS AND TCP STACK PROBLEM

simcon sim300

Dear all,
how are you?
I'm working with sim300 and AT commands.
I want to connect GPRS and send a message to host via tcp/ip by AT Command only
I use Hyper Termial, i tried some commands but unsuccessful.
i can access internet with that sim card by GPRS, but i can't do with SIM300.
Could you please help me steps by steps what should i do?
i tried this:
atd*99***1#
NO CARRIER
AT+CGATT=1
Sometimes return OK, sometimes ERROR, sometime it halt(nothing and can't enter any command)

Please help me about this, Thanks alot.

sim300 at command tcp

All GSM/GPRS modems have several common AT commands, and i tested them on Siemens / Simcon modules successfuly.
i don't know what is your problem exactly?

AT+CGDCONT=1,IP,(APN)internet

then set connection configuration
Siemens: AT^SICS
AT^SISS
then attach GPRS
AT+CGATT=1
then open connection
AT^SISO=1

sim300

Thanks for your reply
I used SIM300 so there are some difference AT commands.

sim300 at command set

simcon gprs connection:

AT+CGDCONT=1,"IP",""
AT+CSTT="","",""
AT+CIICR
AT+CIFSR
AT+CIPSTART="TCP,"",""

sim300 tcp/ip

phuongkt said:

Dear all,
how are you?
I'm working with sim300 and AT commands.
I want to connect GPRS and send a message to host via tcp/ip by AT Command only
I use Hyper Termial, i tried some commands but unsuccessful.
i can access internet with that sim card by GPRS, but i can't do with SIM300.
Could you please help me steps by steps what should i do?
i tried this:
atd*99***1#
NO CARRIER
AT+CGATT=1
Sometimes return OK, sometimes ERROR, sometime it halt(nothing and can't enter any command)

Please help me about this, Thanks alot.

Click to expand...

Settings for SIM300 GPRS

at+cmgf=1
OK

AT+IPR?
+IPR:0

AT+IPR=19200

AT&W

THEN RESTART HYPERTERMINAL AND MODEM

AT+CMGF=1
OK

at+ipr?
+IPR: 19200
OK

at+creg?
+CREG: 0,1
OK

at+csq
+CSQ: 31,0
OK

at+cops?
+COPS: 0,0,"IDEA"
OK

AT+CGDCONT=1,"IP","apn"
OK

AT+CSTT="INTERNET","",""
OK

AT+CGATT?
+CGATT: 1
OK

AT+CGACT?
+CGACT: 1,0
OK



AT+CGDCONT=1,"IP","apn"
OK

AT+CSTT="apn","",""
ERROR

AT+CIICR
OK

AT+CIFSR
10.8.149.240 (IDEA LOCAL IP ADDRESS)

AT+CIPSTART="TCP","server ip","server port"
OK
CONNECT OK
RDY
+CFUN: 1
+CPIN: READY

AT+CIPSEND
>enter ur msg here
Try this
i think it is very helpful for u.

at+ipr=19200

hi there..
i have succeed to send data via SIM300C to real ip
but i dont know how to send data back to SIM300, because the IP address of it is local ip starts with 10.xxx.xxx.xxx
can you help me please?
thx a lot

send data sim300

Hi friends,
I want to send data with GPRS to the Remote server,
First I buy an Mc39i from Siemens but i can sent data with it(It hasn't TCP/IP stack).
If i buying SIM 300 i can send data?
anybody can do this?
anybody can help me?
thanks.

sim300 tcp ip

The SIM300/340 supports GPRS and has a TCP/IP stack, and therefore you can send data with it. For infomration on establishing a GPRS connection and connecting to a computer see the FAQ on this site: **broken link removed**

sim 300 gprs problem

Thanks friends,
I want know how to send Data with UDP/PPP Protocol to the remote server with IP like : 203.162.200.158 (For Example).
thanks friends...
anybody can do this with MC39i?

hiiii kejuqeju
u mention that u hv been able to send data ovr gprs....i hv same kind of wrk n am nt able to send data....
cud u pl send the code that made u send data sucessfuly...pllll
thank you...

Hay many of you asking about TCP IP Client mode connection problem. I have given step by step answer to this problem. Is it usefull to you?

https://www.edaboard.com/threads/232929/