Error - View Single Post - Internet connection using GPRS

**Iphone** · 29-Mar-2007, 01:55 AM

Iam developing an GPRS based embedded application which will connect to internet(remote server) and send & receive data. I have two questions.

Question 1.
I want to establish an internet connection using BENQ M22, GSM GPRS module. I want to know whether BENQ M22 has PPP & TCP/IP stack.? If so how to make use of the inbult stack.

Question 2.
I have another GSM module SIMCOM (Part No SIM100S32-H) , which has got inbult PPP & TCPIP. The Application note gives me the following steps to connect to internet using the inbuilt stack.
1.at+cgdcont=1,"IP","myapn"
2.at+cstt="myapn","<username>",<pwd>
3.at+ciir<cr> --- to activate gprs
4.at+cisfr<cr> -- get local address
..

The 1st and 2nd AT commands are accepted and when i give the 3rd command Iam getting an Error PDP+ DEACT. What does this indicate?. Where is the problem. My SIM card is also GPRS activated.

Can any one suggest any solution .

29-Mar-2007, 01:55 AM	#1 (permalink)
Iphone Fixed Error! Posts: 4,202 Join Date: Mar 2007 Rep Power: 6 IM:	Internet connection using GPRS - Problem Iam developing an GPRS based embedded application which will connect to internet(remote server) and send & receive data. I have two questions. Question 1. I want to establish an internet connection using BENQ M22, GSM GPRS module. I want to know whether BENQ M22 has PPP & TCP/IP stack.? If so how to make use of the inbult stack. Question 2. I have another GSM module SIMCOM (Part No SIM100S32-H) , which has got inbult PPP & TCPIP. The Application note gives me the following steps to connect to internet using the inbuilt stack. 1.at+cgdcont=1,"IP","myapn" 2.at+cstt="myapn","<username>",<pwd> 3.at+ciir<cr> --- to activate gprs 4.at+cisfr<cr> -- get local address .. The 1st and 2nd AT commands are accepted and when i give the 3rd command Iam getting an Error PDP+ DEACT. What does this indicate?. Where is the problem. My SIM card is also GPRS activated. Can any one suggest any solution .