Specifications
SIM900 AT Command Manual       
SIM900_AT Command Manual_V1.03  9  12/24/2010 
8.2.5 AT+CIPACK Query Previous Connection Data Transmitting State..........................175 
8.2.6 AT+CIPCLOSE Close TCP or UDP Connection .....................................................176 
8.2.7 AT+CIPSHUT Deactivate GPRS PDP Context ........................................................176 
8.2.8 AT+CLPORT Set Local Port.....................................................................................177 
8.2.9 AT+CSTT Start Task and Set APN, USER NAME, PASSWORD...........................177 
8.2.10 AT+CIICR Bring Up Wireless Connection with GPRS or CSD .............................178 
8.2.11 AT+CIFSR Get Local IP Address............................................................................179 
8.2.12 AT+CIPSTATUS Query Current Connection Status ...............................................179 
8.2.13 AT+CDNSCFG Configure Domain Name Server...................................................181 
8.2.14 AT+CDNSGIP Query the IP Address of Given Domain Name...............................181 
8.2.15 AT+CIPHEAD Add an IP Head at the Beginning of a Package Received..............182 
8.2.16 AT+CIPATS Set Auto Sending Timer .....................................................................183 
8.2.17 AT+CIPSPRT Set Prompt of ‘>’ When Module Sends Data...................................183 
8.2.18 AT+CIPSERVER Configure Module as Server ......................................................184 
8.2.19 AT+CIPCSGP Set CSD or GPRS for Connection Mode ........................................185 
8.2.20 AT+CIPSRIP Show Remote IP Address and Port When Received Data ................186 
8.2.21 AT+CIPDPDP Set Whether to Check State of GPRS Network Timing ..................187 
8.2.22 AT+CIPMODE Select TCPIP Application Mode....................................................188 
8.2.23AT+CIPCCFG Configure Transparent Transfer Mode ............................................188 
8.2.24 AT+CIPSHOWTP Display Transfer Protocol in IP Head When Received Data.....189 
8.2.25 AT+CIPUDPMODE UDP Extended Mode.............................................................190 
8.2.26 AT+CIPRXGET Get Data from Network Manually ...............................................191 
8.2.27 AT+CIPQRCLOSE Quick Remote Close ...............................................................192 
8.2.28 AT+CIPSCONT Save TCPIP Application Context .................................................192 
9 AT Commands for IP Application .............................................................................................194 
9.1 Overview.............................................................................................................................194 
9.2 Detailed Descriptions of Commands...................................................................................194 
9.2.1 AT+SAPBR Bearer Settings for Applications Based on IP.......................................194 
10 AT Commands for HTTP Application.....................................................................................196 
10.1 Overview...........................................................................................................................196 
10.2 Detailed Descriptions of Commands.................................................................................196 
10.2.1 AT+HTTPINIT Initialize HTTP Service .................................................................196 
10.2.2 AT+HTTPTERM Terminate HTTP Service............................................................196 
10.2.3 AT+HTTPPARA Set HTTP Parameters Value ........................................................197 
10.2.4 AT+HTTPDATA Input HTTP Data .........................................................................198 
10.2.5 AT+HTTPACTION    HTTP Method Action .............................................................199 
10.2.6 AT+HTTPREAD Read the HTTP Server Response................................................201 
10.2.7 AT+HTTPSCONT Save HTTP Application Context ..............................................202 
11 AT Commands for FTP Application........................................................................................203 
11.1 Overview...........................................................................................................................203 
11.2 Detailed Descriptions of Commands.................................................................................203 
11.2.1 AT+FTPPORT Set FTP Control Port.......................................................................203 
11.2.2 AT+FTPMODE Set Active or Passive FTP Mode...................................................204 
11.2.3 AT+FTPTYPE Set the Type of Data to Be Transferred...........................................205 










