Simcom Sim300 GPRS connection problem

[kunal123]

Re: simcom at commands

hi dna,
i tried command u mentioned in post for gprs connection all commands (AT, AT+CGDCONT, AT+CSTT, AT+CIIRCR, AT+CIFSR, AT+CIPSTATUS, AT+CIPHEAD, AT+CDNSORIP) execute properly get desired reponce from module, but when i send command AT+CIPSTART="tcp","www.google.com","2020" module respond with ERROR message where i made mistake, please help me

thanks

 

[ponnus]

Re: simcom at commands

Hai,
May be you can use this

AT+CIPSTART="TCP","www.google.com","80"

 

[kunal123]

Re: simcom at commands

hi,
i used same command, but getting error

Hai,
May be you can use this

AT+CIPSTART="TCP","www.google.com","80"

 

[ponnus]

Hai,
I think SIM300 is case sensitive.
TCP instead of tcp.

 

[hcsbi]

Re: TCP connecting

Hi,

I'm also from Hungary, and suffer with the same thing on other GPRS modules.
I'm just considering to buy a SIM300, and I would be very interested in your experiences.

Could we mail to each other somehow?

It would be really-really helpful for me. If you like chocolate, I can send


(Hungarian version:

Szia!

Hetek óta szenvedek beágyazott rendszerhez GPRS modem hozzákapcsolása területén, és nagyon kíváncsi vagyok a tapasztalataidra.
Most szeretnék venni egy SIM300-at, mert az még épp megfizethető.

Válthatnánk esetleg pár emailt valahogy? Szívesen küldök csokit/sört cserébe!)

Üdv,
Dani

Hi! I hope someone still watching this thread. I also have a problem with my GPRS connection. Help would be really appreciated. Where did I go wrong?
The commands: (Vodafone GPRS WAP, Hungary)

at+cgdcont?

+CGDCONT: 1,"IP","wap.vodafone.net","",0,0

OK
AT+CSTT="wap.vodafone.net","vodawap","vodawap"

OK
at+cgatt?

+CGATT: 1

OK
at+ciicr

OK
at+cifsr

10.17.24.172
at+clport?

TCP: 2020
UDP: 3030

OK
at+cipdata?

ERROR
at+cipdata=1

ERROR
at+cipstart="TCP","81.182.53.74",3000

OK

STATE: TCP CONNECTING

CONNECT FAIL

 

[ponnus]

Hai,
try this APN

internet.vodafone.net