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GPRS data communication via UART

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kwdckperera

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I want to send data from my GPRS module (Huawei GTM900 -http://www.lankatronics.com/huawei-g900-gprs-development-module-with-antenna.html ) to a server on web. I plan to use a micro-controller pic 16f877A for this connecting GPRS module via UART port.

First i tried to check my module with my PC. I used Hypoterminal for sending At commands to GPRS module. But i could not establish a connection with my network. Please help me with this.

Following are my network details.
Code: 
Use Proxy 	Yes
Proxy Address / IP Address 	192.168.050.163
Port Number / Proxy Port 	8080
Username 	(blank)
Password 	(blank)
APN / Access Point 	mobitel3g
Login Request 	No
Authentication 	PAP
Data Compression 	No
Header Compression 	No
Allow Calls 	Automatic
DNS Address 	...
Homepage 	http://wap.mobitel.lk

here is the commands i typed and corresponding replies got.
Code: 
AT
OK
AT+CPIN?
+CPIN: READY
AT+cgatt=1
OK
AT+CGDCONT=1,"IP","mobitel3g","192.168.050.163",0,0 
OK 
AT#GPRS=1 			
ERROR 
AT#GPRS=1 
ERROR

Please help me with this.:cry::cry::cry:
Thanks
 

Hi,

here is a list/Sequence of commands that i used to connect to GPRS here in Pakistan.

AT+CPIN?\r
AT+CREG?\r
AT+CGATT?\r
AT+CIPMOD=0\r
AT+CSTT=\"wap.warid\",\",\",\",\"\r
AT+CIICR\r
AT+CIFSR\r

Enjoy!
 

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