how to connect to GPRS via AT commands????

hi, i’m now facing the problem connect to GPRS by using GM862. When i type ATD99**1#, it’s hang. Then,i type AT#SKTOP, but it responses with NO CARRIER. i try with AT#EMAILACT=1 and AT#GPRS=1, both response ERROR. But before these all commands , i hv set AT+CGQREQ=1,0,0,0,0,0 and AT+CGDCONT=1,“IP”,“internet.t-d1.de”,“0.0.0.0”,0,0.

Anyone can tell me what is the correct steps and what should i set before connect GPRS??

Nicole

Hello, anyone can reply me answer??

Nicole

I would start from the basics. Are you within a GPRS coverage area? What is your signal strength like?

Type: AT#MONI and reply with the results.

Also, did you setup the GPRS username and password? If you didnt, then this is why it is not working.

Here is an example of what typically happens to me when i am in a poor GPRS area or perhaps its just being finicky. I just have my software beat it up until it connects to GPRS.

AT+CGDCONT=1,“IP”,“internet.t-d1.de”,“0.0.0.0”,0,0

OK

AT#GPRS=1

ERROR

AT#GPRS=1

ERROR

AT#GPRS=1

+IP: 10.38.38.29

OK

Hi , i hv done the following setting, and i check the signal strength ,its good with the response following

at#moni

#MONI: MY maxis BSIC:14 RxQual:7 LAC:08B8 Id:665A ARFCN:87 PWR:-64dbm TA:0

OK

at+csq

+CSQ: 25,7

OK

The baud rate i set is 9600 and flow control is none. Can i connect to GPRS by using 9600 or 115200? Because when i connect to 115200, the flow control i refer the datasheet , the flow control should be hardware, but the setting is no response for me. Therefore, i try 115200 with flow control none. These following is the setting of GPRS and is failed to connect:

AT+CGDCONT=1,“IP”,“internet.gprs”,“0.0.0.0”,0,0

OK

AT#USERID=“EASY GPRS”

OK

AT#PASSW=“EASY GPRS”

OK

AT#GPRS=1

ERROR

Is there any problems with my setting? Any suggestion?

Nicole

Could you also do a AT#SERVINFO – this response will validate if GPRS is available in the cell you are on.

also a AT+CREG?

Is “EASY GPRS” a valid GPRS account that the carrier provided to you?

hi friend,.

i hav tried with these command sets… i also got NO CARRIER as output

AT

Return: OK

2.AT+CPIN?

Return:

+CPIN

REDDY

2.AT+CGDCONT=1,“IP”,“airtelgprs.com”,“0.0.0.0”,0,0

Return: OK

3.AT#USERID=“Easy GPRS”

Return: OK

4.AT#PASSWD=“*****”

Return: OK

5.AT#PKTSZ=300

Return: OK

6.AT#DSTO=50

Return: OK

7.AT#SKTTO=90

Return: OK

8.AT#SKTCT=600

Return: OK

9.AT#SKTSAV

10…AT#GPRS=1

return:

+IP:127.5.123.231

OK

AT#SKTD=0,80,“www.google.com”,0,0

Return:

CONNECT

After that when i typed GET / HTTP/1.1 ,it shows NO CARRIER after 30 sec.

Is thr any solution

hi friends,

My problem is solved. After the connect indication i sent the file from Trasfer->send file menu of hyperterminal. That .txt file contains are

GET / HTTP/1.1

Host: www.telt.com

Connection: keep-alive

Then. The HTML code of the webpage displayed in my hyperterminal

i already tried to do a GET with hyperterterminal and works however i want to send the commands in the comand line how can i do it any suggestions? cause i cant see anything that i write what or something that i do wrong or i am missing anything? or with the module can i create .txt files? and how should send it to the socket?

HTTP will not echo the transmitted characters…

just, blindly, type GET /(CTRL-J)(CTRL-M)

Hi guys, i have some questions regarding the GM862-GPS module. I want to test if my module GPRS working.

  1. What are the settings that i need to set? I using Rsterm btw.

  2. To test the GPRS, do i have to insert the sim card to the module?

  3. After testing my GPRS, i would like to send some GPS data and view it

at www.track4free.com. How do i do it?

Thanks in advanced guys.

Hi Everyone,

I was also successful with connecting to GPRS by using GM863 and I saw the html code on my hyperterminal. But is there a way to view the homepage on Internet Explorer. Is it possible to surf the net with the GM863.

DM

siliconwee:
hi, i’m now facing the problem connect to GPRS by using GM862. When i type ATD99**1#, it’s hang. Then,i type AT#SKTOP, but it responses with NO CARRIER. i try with AT#EMAILACT=1 and AT#GPRS=1, both response ERROR. But before these all commands , i hv set AT+CGQREQ=1,0,0,0,0,0 and AT+CGDCONT=1,“IP”,“internet.t-d1.de”,“0.0.0.0”,0,0.

Anyone can tell me what is the correct steps and what should i set before connect GPRS??

Nicole

Greetings,

Do you have a line with the GPRS activated, if not, get one.

regards.

I was having problems too but i’ve found the issue for me.

In TeraTerm, change the general settings to send both a carriage return and linefeed:

Transmit: CR+LF