GPRS 网络的 AT 命令集已标准化，因此您可以在其他页面上搜索帮助，例如[link1] 和[link2]

除此之外，建议您也从该链接[link3] 中查看示例。

下面的示例只是从这个页面复制/编辑的片段，所以我相信这是一个很好的起点。建议不要使用与制造商相关的特定命令，以保持您的代码可重用。

GPRS 用户可以激活或停用套接字。然后用户可以使用 AT 命令测试器与远程服务器建立 TCP 或 UDP 连接。

一旦通过套接字建立了 TCP 或 UDP 连接，用户就可以使用其他应用服务，如 HTTP、FTP、SMTP 等。

例如：

Command: AT+CREG? 
Success Result: +CREG=1,1 OK 
Note: This means the SIM is ready and has connected to the network. 

Command: AT+CGATT? 
Response: +CGATT: 1 
Note: Check if the SIM has Internet access. 

Command: AT+CIPSTATUS 
Response : OK 
Note: Query the IP settings. 

Command: AT+CIPMUX=0
Response: OK 
Note: Configure modem to make a single port open for connections. 

Command: AT+CSTT="www.server.com","","" 
Response: OK 
Note: Connect to Internet (Parameters are as follows; 
"APN","USERNAME","PASSWORD", 
have in mind that both the Username and Password are blank in the above instance. 

Command: AT+CIICR 
Response: OK 
Note: Bring up wireless network. 
Ensure that the modem has a SIM with credit and/or has a data plan is activated. 

Command: AT+CIPSTART="TCP","584.287.743.894","80" 
Response: OK CONNECT OK 
Note: Make a TCP Connection to the server at 584.287.743.894 on Port 80, the Default TCP and HTTP port. 

Command: AT+CIPSEND 
Response: > 
Note: This command allows you to make request of the server. You enter 
your request after the prompt (>). 

Commands may either be GET, PUT or POST. 
Each command has a specific manner in which the command is to be 
written. 
GET request to the server example is below. 
--------
GET /my_page.html HTTP/1.1 
Host: 124.456.798:80 Connection: keep-alive .... Connection 
Successful!

Command: AT+CIPCLOSE
--------