Specifications
SIM900 AT Command Manual       
SIM900_AT Command Manual_V1.03  198  12/24/2010 
 "UA" The user agent string which is set by the 
application to identify the mobile. Usually this 
parameter is set as operation system and software 
version information. 
   Default value is SIMCOM_MODULE. 
 "PROIP"  The IP address of HTTP proxy server 
 "PROPORT" The port of HTTP proxy server 
 "REDIR"  This flag controls the redirection mechanism of 
the SIM900 when it is acting as HTTP client
(numeric). If the server sends a redirect code 
(range 30x), the client will automatically send a 
new HTTP request when the flag is set to (1). 
Default value is 0 (no redirection). 
       "BREAK" Parameter for HTTP method "GET" used for 
resuming broken transfer. 
"BREAKEND" Parameter for HTTP method "GET", used for 
resuming broken transfer. which is used together 
with "BREAK", 
If the value of "BREAKEND" is bigger than 
"BREAK", the transfer scope is from "BREAK"
to "BREAKEND". 
If the value of "BREAKEND" is smaller than 
"BREAK", the transfer scope is from "BREAK"
to the end of the file. 
If both "BREAKEND" and "BREAK" are 0, the 
resume broken transfer function is disabled. 
<HTTPParamValue> HTTP Parameter value. 
Type and supported content depend on related 
 <HTTPParamTag>. 
Reference 
Note 
Not all the HTTP Server supports "BREAK" and "BREAKEND"
parameters 
10.2.4 AT+HTTPDATA Input HTTP Data 
AT+HTTPDATA Input HTTP Data 
Response 
+HTTPDATA: (1-318976),(1000-120000) 
OK 
Test Command 
AT+HTTPDATA
=? 
Parameters 
See Write Command 










