SIM900 & WCDMA Series Modules_ Application 1.02

Transcription

1 SIM900 & WCDMA Series Modules_ Application 1.02

2 Contents 1 SIM900 Series Modules SMS Application Logs Send English Short Message in Text mode... 4 Send Chinese Message 你好 In PDU Mode SIM900 Series Modules MMS Application Log... 5 SIM900 TCP/IP Application Logs Single Connection TCP Client In Non-transparent Mode... 8 Single Connection UDP Client In Non-transparent Mode... 9 Single Connection TCP Server In Non-transparent Mode Single Connection TCP Client In Transparent Mode...11 Single Connection UDP Client In Transparent Mode Multi Connection In Non-transparent Mode SIM900 Series Modules FTP Application Logs FTP GET METHOD FTP PUT METHOD How to get the FTP file size and delete the FTP file How to list the FTP files, create and delete the folder SIM900 Series Modules HTTP Application Logs HTTP GET METHOD HTTP POST METHOD HTTP HEAD METHOD Hypertext Transfer Protocol Secure (HTTPS) SIM900 Series Modules Application Log (Send an with an attachment) SIM900 Series Modules DDET Application Log SIM900 Series Modules Jamming detection Application Log SIM900 Series Modules GSM location Application Log SIM900 Series Modules Net Scan Application Log SIM900 Series Modules FOTA Application Log SIM900 Series Modules TTS (Text To Speech) Application Log Play synthetic speech locally by UCS2 coding text Play synthetic speech remotely by ASIIC coding text Stop playing synthetic speech SIM900 Series Modules SMS Auto run Application Log (do some remote configuration of the SIM900 module by sending AT commands over SMS) WCDMA Series Modules MMS Application Logs MMS Send MMS Receive WCDMA Series Modules TCP Application Logs TCP Client UDP Client TCP Client (transparent mode) Multi-Sockets SIM900 & WCDMA Series Modules_ Application

3 16 WCDMA Series Modules FTP Application Logs FTP PUT FTP GET WCDMA Series Modules HTTP Application Logs HTTP GET HTTP POST WCDMA Series Modules Application Logs SMTP :(Simple Mail Transfer Protocol) POP3 :(Post Office Protocol-Version3) SIM900 & WCDMA Series Modules_ Application

4 1 SIM900 Series Modules SMS Application Logs 1.1 Send English Short Message in Text mode AT AT+CPIN? +CPIN: SIM PIN AT+CPIN=1234 //Enter the pin number of SIM card AT+CREG? +CREG: 0,2 AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 31,0 AT+CMGF? +CMGF: 0 AT+CMGF=1 //Set Text mode AT+CSCS="GSM" //Select character set to GSM AT+CSCA? //Check service centre address +CSCA: " ",145 SIM900 & WCDMA Series Modules_ Application

5 AT+CSMP? +CSMP: 17,167,0,0 AT+CSMP=17,167,0,241 //Set SMS Text mode parameters AT+CMGS=" " //Send SMS message to > HELLO SIMCOM +CMGS: Send Chinese Message 你好 In PDU Mode AT+CMGF=0 //Set PDU mode AT+CSCS="UCS2" //Select character set to UCS2 AT+CSCA? //Check service centre address +CSCA: "002B ",145 AT+CMGS=019 //Send SMS > D F F60597D +CMGS: 20 PS: For the detail, please help to refer AN_SMS_V SIM900 Series Modules MMS Application Log Call Ready AT SIM900 & WCDMA Series Modules_ Application

6 AT+CPIN? +CPIN: READY AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 28,0 AT+CGATT? //Check GPRS service attached or not +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+CMMSINIT //Initialize MMS function AT+CMMSCURL="mmsc.monternet.com" //Set the URL of MMS centre AT+CMMSCID=1 //Set the network parameter for MMS AT+CMMSPROTO=" ",80 //Set the protocol parameter and MMS proxy AT+CMMSSENDCFG=6,3,0,0,2,4 //Set the parameters for sending MMS AT+SAPBR=3,1,"Contype","GPRS" //Set bearer parameters AT+SAPBR=3,1,"APN","CMWAP" AT+SAPBR=1,1 //Activate bearer context AT+SAPBR=2,1 SIM900 & WCDMA Series Modules_ Application

7 +SAPBR: 1,1," " AT+CMMSEDIT=1 //Enter edit mode to edit MMS AT+CMMSDOWN="PIC",28521,20000,"Beauty.jpg" //Download image CONNECT AT+CMMSRECP=" " // CONNECT means ready to download //Add the recipient AT+CMMSSEND //Send MMS PS: For the detail, please help to refer SIM900_MMS_AT Command Manual_V SIM900 TCP/IP Application Logs SW Architecture SIM900 series modules have 2 modes of TCP/IP applications: Single connection (AT+CIPMUX=0) Multi connection (AT+CIPMUX=1) In single connection mode, SIM900 can work as TCP server and TCP/UDP client in both Non-transparent mode (AT+CIPMODE=0) and transparent mode (AT+CIPMODE=1). In multi connection mode, SIM900 can work as TCP server and TCP/UDP client only in Non-transparent mode. Total 8 TCP/UDP connections can be set up in this mode: 8 clients or 1 server with 7 clients SIM900 & WCDMA Series Modules_ Application

8 3.1 Single Connection TCP Client In Non-transparent Mode AT AT+CPIN? +CPIN: READY AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 30,0 AT+CGATT? //Check GPRS service attached or not +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+CIPMODE? //Check TCPIP application mode +CIPMODE: 0 AT+CIPMUX=0 //Set the single connection mode AT+CSTT= CMNET,, //Start task and set APN, User Name and Password. Please ask your local GSM provider to get the APN. AT+CIICR //Bring up wireless connections with GPRS AT+CIFSR //Get local IP address AT+CIPSTART="TCP"," ","7806" //Start up TCP connection SIM900 & WCDMA Series Modules_ Application

9 CONNECT AT+CIPSEND //Send data > HELLO SEND AT+CIPSHUT //Deactivate GPRS PDP context SHUT 3.2 Single Connection UDP Client In Non-transparent Mode AT AT+CPIN? +CPIN: READY AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 30,0 AT+CGATT? //Check GPRS attached or not +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+CIPMODE? //Check TCPIP application mode +CIPMODE: 0 AT+CIPMUX=0 //Set the single connection mode AT+CSTT= CMNET,, //Start task and set APN, User Name and Password. Please ask your local GSM provider to get the APN. SIM900 & WCDMA Series Modules_ Application

10 AT+CIICR //Bring up wireless connection with GPRS AT+CIFSR //Get local IP address AT+CIPSTART="UDP"," ","7806" //Start up UDP connection CONNECT AT+CIPSEND //Send data to remote server > HELLO SEND AT+CIPSHUT //Deactivate GPRS PDP context SHUT 3.3 Single Connection TCP Server In Non-transparent Mode AT AT+CPIN? +CPIN: READY AT+CREG? +CREG: 0,1 AT+CSQ +CSQ: 31,0 AT+CGATT? +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 SIM900 & WCDMA Series Modules_ Application

11 AT+CIPMUX=0 AT+CIPMODE=0 AT+CIPSERVER=1,1234 SERVER AT+CIFSR AT+CIPSTATUS STATE: SERVER LISTENING REMOTE IP: hello server AT+CIPSEND hello client SEND AT+CIPSERVER=0 SERVER CLOSE hello sim900 AT+CIPCLOSE CLOSE 3.4 Single Connection TCP Client In Transparent Mode AT AT+CPIN? +CPIN: READY AT+CREG? +CREG: 0,1 SIM900 & WCDMA Series Modules_ Application

12 AT+CSQ +CSQ: 31,0 AT+CGATT? +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+CIPMUX=0 AT+CIPMODE=1 AT+CSTT= CMNET,, //Start task and set APN, User Name and Password. Please ask your local GSM provider to get the APN. AT+CIICR AT+CIFSR AT+CIPSTART="TCP"," ","7806" CONNECT Hello ATO CONNECT AT+CIPSHUT SHUT 3.5 Single Connection UDP Client In Transparent Mode AT SIM900 & WCDMA Series Modules_ Application

13 AT+CPIN? +CPIN: READY AT+CREG? +CREG: 0,1 AT+CSQ +CSQ: 31,0 AT+CGATT? +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+CIPMUX=0 AT+CIPMODE=1 AT+CSTT= CMNET,, AT+CIICR //Start task and set APN, User Name and Password. Please ask your local GSM provider to get the APN. AT+CIFSR AT+CIPSTART="UDP"," ","7806" CONNECT Hello ATO CONNECT SIM900 & WCDMA Series Modules_ Application

14 AT+CIPSHUT SHUT 3.6 Multi Connection In Non-transparent Mode AT AT+CPIN? +CPIN: READY AT+CREG? +CREG: 0,1 AT+CSQ +CSQ: 30,0 AT+CGATT? +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+CIPMODE? +CIPMODE: 0 AT+CIPMUX=1 AT+CSTT= CMNET,, //Start task and set APN, User Name and Password. Please ask your local GSM provider to get the APN. AT+CIICR SIM900 & WCDMA Series Modules_ Application

15 AT+CIFSR AT+CIPSTART=0,"UDP"," ","7806" 0, CONNECT AT+CIPSTART=1,"TCP"," ","7806" 1, CONNECT AT+CIPSEND=1 > HELLO 1, SEND AT+CIPSEND=0 > HI SERVER 0, SEND AT+CIPCLOSE=0 0, CLOSE AT+CIPCLOSE=1 1, CLOSE AT+CIPSHUT SHUT PS: Regarding the TCP connection, please help to refer SIM900_TCPIP_Application Note_V SIM900 Series Modules FTP Application Logs File Transfer Protocol application provides a mode to interact with FTP server. The basic applications contain GET, PUT methods, which also supports broken transfer resuming function.put method supports APPE, STOR and other modes. 4.1 FTP GET METHOD RDY +CFUN: 1 +CPIN: READY SIM900 & WCDMA Series Modules_ Application

16 Call Ready AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 27,0 AT+CGATT? //Check GPRS service enabled or not +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+SAPBR=3,1,"CONTYPE","GPRS" //Set bearer parameters AT+SAPBR=3,1,"APN","CMNET" AT+SAPBR=1,1 //Activate bearer context AT+SAPBR=2,1 +SAPBR: 1,1," " AT+FTPCID=1 //Set FTP bearer profile identifier AT+FTPSERV="simcom.exavault.com" //Set FTP server address AT+FTPUN="zhangkun" //Set FTP user name AT+FTPPW="1234" //Set FTP password AT+FTPGETNAME="123.txt" //Set download file name AT+FTPGETPATH="/" //Set download file path SIM900 & WCDMA Series Modules_ Application

17 AT+FTPGET=1 //Download file +FTPGET:1,1 AT+FTPGET=2,1024 //Request to read 1024 Bytes data +FTPGET:2,132 DFSDFEWERTTGDFGDFDGDGDFGDFGDFGDFGDSFGDSFGDRETET43422WWWWWWWWWWWW WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW WWWWWWWWWWWWWWWWWWWW +FTPGET:1,0 //Data transfer finished 4.2 FTP PUT METHOD RDY +CFUN: 1 +CPIN: READY Call Ready AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 27,0 AT+CGATT? //Check GPRS service enabled or not +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+SAPBR=3,1,"CONTYPE","GPRS" //Set bearer parameters AT+SAPBR=3,1,"APN","CMNET" SIM900 & WCDMA Series Modules_ Application

18 AT+SAPBR=1,1 //Activate bearer context AT+SAPBR=2,1 +SAPBR: 1,1," " AT+FTPCID=1 //Set FTP bearer profile identifier AT+FTPSERV="simcom.exavault.com" //Set FTP server address AT+FTPUN="zhangkun" //Set FTP User Name AT+FTPPW="1234" //Set FTP password AT+FTPPUTNAME="1K.txt" //Set upload file name AT+FTPPUTPATH="/" //Set upload file path AT+FTPPUT=1 //Upload file +FTPPUT:1,1,1360 AT+FTPPUT=2,0 //Terminate uploading +FTPPUT:1,0 4.3 How to get the FTP file size and delete the FTP file. AT+GSV SIMCOM_Ltd SIMCOM_SIM900 Revision: 1137B09SIM900B64_ST_FTPSIZE_ added in the next official release version. // This is a beta FW, and this solution will be SIM900 & WCDMA Series Modules_ Application

19 AT+CREG? +CREG: 0,1 AT+CSQ +CSQ: 30,0 AT+CGATT? +CGATT: 1 AT+SAPBR=3,1,"CONTYPE","GPRS" AT+SAPBR=3,1,"APN","CMNET" AT+SAPBR=1,1 AT+SAPBR=2,1 +SAPBR: 1,1," " AT+FTPCID=1 AT+FTPSERV="simcom.exavault.com" AT+FTPUN="zhangkun" AT+FTPPW="1234" AT+FTPGETNAME="1234.txt" // Before you execute above two commands; you need use the AT+FTPGETNAME & AT+FTPGETPATH to get your file name and path, which you want to deal with. And make sure the file which you want to deal with exist in your FTP server. SIM900 & WCDMA Series Modules_ Application

20 AT+FTPGETPATH="/" AT+FTPSIZE // Get the FTP file size. +FTPSIZE:1,0,51 AT+FTPDELE //In this example, it shows the file size is 51 bytes. // Delete the FTP file. +FTPDELE:1,0 4.4 How to list the FTP files, create and delete the folder AT+GSV SIMCOM_Ltd SIMCOM_SIM900 Revision:1137B11SIM900M64_ST_FTPLIST_ AT+CPIN? +CPIN: READY AT+CSQ +CSQ: 22,0 AT+CREG? +CREG: 0,1 AT+CGATT? +CGATT: 1 AT+SAPBR=3,1,"CONTYPE","GPRS" SIM900 & WCDMA Series Modules_ Application

21 AT+SAPBR=3,1,"APN","CMNET" //please help to use your local APN. Smart Machine Smart Decision AT+SAPBR=1,1 AT+SAPBR=2,1 +SAPBR: 1,1," " AT+FTPCID=1 AT+FTPSERV="simcom.exavault.com" //use your own FTP server. AT+FTPUN="zhangkun" AT+FTPPW="1234" AT+FTPGETPATH="/test/111" AT+FTPLIST=1 //you must get the path which you want to list its files. //To get the list. +FTPLIST:1,1 AT+FTPLIST=2,1024 //To show the list data. +FTPLIST:2,303 drwxrwx 2 zhangkun simcom 5 Apr 5 11:47. drwxrwx 3 zhangkun simcom 3 Apr 5 10:44.. rw rw 1 zhangkun simcom 3 Apr 5 10:44 1.txt rw rw 1 zhangkun simcom 6 Apr 5 10:44 2.txt rw rw 1 zhangkun simcom 9 Apr 5 10:44 3.txt SIM900 & WCDMA Series Modules_ Application

22 +FTPLIST:1,0 commands until this report occurred. AT+FTPGETPATH="/test/111/test" /test/111. AT+FTPMKD //Finished. You need to wait to write other AT //To create a new folder named test in the path // Create this new folder. +FTPMKD:1,0 AT+FTPGETPATH="/test/111/" new folder test whether is exist. //Finished and successfully. //To list the path /test/111 again and check this AT+FTPLIST=1 +FTPLIST:1,1 AT+FTPLIST=2,1024 +FTPLIST:2,364 drwxrwx 3 zhangkun simcom 6 Apr 6 02:16. drwxrwx 3 zhangkun simcom 3 Apr 5 10:44.. rw rw 1 zhangkun simcom 3 Apr 5 10:44 1.txt rw rw 1 zhangkun simcom 6 Apr 5 10:44 2.txt rw rw 1 zhangkun simcom 9 Apr 5 10:44 3.txt drwxrwx 2 zhangkun simcom 2 Apr 6 02:16 test //you can find this new folder is exist. +FTPLIST:1,0 SIM900 & WCDMA Series Modules_ Application

23 AT+FTPGETPATH="/test/111/test" need to get its path. Smart Machine Smart Decision //To delete this new folder test. At first you AT+FTPRMD //Delete the Folder. +FTPRMD:1,0 AT+FTPGETPATH="/test/111/" //To list the path /test/111 again and check this new folder test whether is deleted successfully. AT+FTPLIST=1 +FTPLIST:1,1 AT+FTPLIST=2,1024 +FTPLIST:2,303 drwxrwx 2 zhangkun simcom 5 Apr 6 02:17. drwxrwx 3 zhangkun simcom 3 Apr 5 10:44.. rw rw 1 zhangkun simcom 3 Apr 5 10:44 1.txt rw rw 1 zhangkun simcom 6 Apr 5 10:44 2.txt rw rw 1 zhangkun simcom 9 Apr 5 10:44 3.txt //you can find this new folder is deleted successfully. +FTPLIST:1,0 Note: Regarding the FTP application, please help to refer SIM900_IP_Application Note_V SIM900 Series Modules HTTP Application Logs Hyper Text Transfer Protocol application provides a mode to alternate of HTTP server. The basic application contains GET, POST, HEAD methods; it also supports proxy server, redirection, broken transfer resuming functions. 5.1 HTTP GET METHOD AT SIM900 & WCDMA Series Modules_ Application

24 AT+GSV SIMCOM_Ltd SIMCOM_SIM900 Revision:1137B10SIM900M64_ST AT+IPR? +IPR: 0 AT+IPR= AT+CPIN? +CPIN: READY AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 31,0 AT+CGATT? //Check GPRS service enabled or not +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+SAPBR=3,1,"Contype","GPRS" //Set bearer parameters AT+SAPBR=3,1,"APN","CMNET" AT+SAPBR=1,1 //Activate bearer context SIM900 & WCDMA Series Modules_ Application

25 AT+SAPBR=2,1 +SAPBR: 1,1," " Call Ready AT+HTTPINIT //Initialize HTTP service AT+HTTPPARA="CID",1 //Set parameters for HTTP session AT+HTTPPARA="URL"," AT+HTTPACTION=0 //Start HTTP GET session +HTTPACTION:0,200,71 AT+HTTPREAD //Read the data of HTTP server +HTTPREAD:71 <script language=javascript>location.href='english/index.aspx'</script> AT+HTTPTERM //Terminate HTTP service 5.2 HTTP POST METHOD AT AT+GSV SIMCOM_Ltd SIMCOM_SIM900 Revision:1137B10SIM900M64_ST AT+CPIN? +CPIN: READY SIM900 & WCDMA Series Modules_ Application

26 AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 31,0 AT+CGATT? //Check GPRS service enabled or not +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+SAPBR=3,1,"Contype","GPRS" //Set bearer parameters AT+SAPBR=3,1,"APN","CMNET" AT+SAPBR=1,1 //Activate bearer context AT+SAPBR=2,1 +SAPBR: 1,1," " AT+HTTPINIT //Initialize HTTP service AT+HTTPPARA="CID",1 //Set parameters for HTTP session AT+HTTPPARA="URL"," :7806" AT+HTTPDATA=5,10000 //POST data to HTTP server DOWNLOAD AT+HTTPACTION=1 //Start HTTP post session SIM900 & WCDMA Series Modules_ Application

27 +HTTPACTION:1,200,10 AT+HTTPTERM //Post the data successfully //Terminate HTTP service 5.3 HTTP HEAD METHOD AT AT+GSV SIMCOM_Ltd SIMCOM_SIM900 Revision:1137B10SIM900M64_ST AT+CPIN? +CPIN: READY AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 31,0 AT+CGATT? //Check GPRS service enabled or not +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+SAPBR=3,1,"Contype","GPRS" //Set bearer parameters AT+SAPBR=3,1,"APN","CMNET" AT+SAPBR=1,1 //Activate bearer context SIM900 & WCDMA Series Modules_ Application

28 AT+SAPBR=2,1 +SAPBR: 1,1," " AT+HTTPINIT //Initialize HTTP service AT+HTTPPARA="CID",1 //Set parameters for HTTP session AT+HTTPPARA="URL"," AT+HTTPACTION=2 //Start HTTP HEAD session +HTTPACTION:2,200,0 AT+HTTPTERM //Terminate HTTP service Note: Regarding the HTTP application, please help to refer SIM900_IP_Application Note_V Hypertext Transfer Protocol Secure (HTTPS) Hypertext Transfer Protocol Secure (HTTPS) is a combination of Hypertext Transfer Protocol (HTTP) with SSL/TLS protocol. It provides encrypted communication and secure identification of a network web server. HTTPS connections are often used for payment transactions on the World Wide Web and for sensitive transactions in corporate information systems. Note: For these special commands, please help to refer SIM900_HTTPS_ATC_V1.00. AT AT+GSV SIMCOM_Ltd SIMCOM_SIM900 Revision:1137B10SIM900M64_ST_HTTPS_TEST_ //Special test FW. AT+CPIN? +CPIN: READY SIM900 & WCDMA Series Modules_ Application

29 AT+CREG? Smart Machine Smart Decision +CREG: 0,1 AT+CSQ +CSQ: 27,0 AT+CGATT? +CGATT: 1 AT+SAPBR=3,1,"Contype","GPRS" AT+SAPBR=3,1,"APN","CMNET" BUSY AT+SAPBR=1,1 AT+SAPBR=2,1 +SAPBR: 1,1," " AT+HTTPSSL=1 //Enable the SSL function AT+HTTPINIT AT+HTTPPARA="CID",1 AT+HTTPPARA="URL"," //The URL must support SSL function AT+HTTPACTION=0 +HTTPACTION:0,302,376 the data of the HTTP server AT+HTTPREAD //Wait for the response and then issue AT+HTTPREAD to read +HTTPREAD:376 <HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8"> <TITLE>302 Moved</TITLE></HEAD><BODY> <H1>302 Moved</H1> The document has moved <A HREF=" p:// A">here</A>. </BODY></HTML> SIM900 & WCDMA Series Modules_ Application

30 AT+HTTPTERM Smart Machine Smart Decision 6 SIM900 Series Modules Application Log (Send an with an attachment) Note: For the detail, please help to refer SIM900_ _ATC_V1.01. RDY +CFUN: 1 +CPIN: READY Call Ready AT AT+GSV SIMCOM_Ltd SIMCOM_SIM900 Revision: 1137B03SIM900M64_ST_MMS AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 27,0 AT+CGATT? //Check GPRS service enabled or not +CGATT: 1 // 1 indicate that attached the GPRS service successfully. If 0, set AT+CGATT=1 AT+SAPBR=3,1,"Contype","GPRS" //Set bearer parameters SIM900 & WCDMA Series Modules_ Application

31 AT+SAPBR=3,1,"APN","CMNET" AT+SAPBR=1,1 //Activate bearer context AT+SAPBR=2,1 +SAPBR: 1,1," " AT+ CID=1 //Set parameters of AT+ TO=30 //Set timeout value of SMTP/POP3 server response AT+SMTPSRV="mail.sim.com",25 //Set SMTP server address and port AT+SMTPAUTH=1,"kun.zhang","antony" //Set user name and password //Set sender address and name //Set the recipient (To:) //Set the recipient (Cc:) //Set the recipient (Bcc:) AT+SMTPSUB="Test" //Set the subject of AT+SMTPBODY //Set the body context of > HELLO AT+SMTPFILE=1,"test.txt",0 AT+SMTPSEND // Set the Attachment //Send the SIM900 & WCDMA Series Modules_ Application

32 +SMTPFT: 1,1360 AT+SMTPFT=100 //For below commands detailed explanations, please help to refer SIM900_ _ATC_V1.01 page 26. +SMTPFT: 2,100 +SMTPFT:1,1360 AT+SMTPFT=0 +SMTPSEND: 1 //Send successfully 7 SIM900 Series Modules DDET Application Log DDET means DTMF detection. This application can be used to detect the DTMF tone from remote side which is enabled by AT command AT+DDET=1 RDY +CFUN: 1 +CPIN: READY Call Ready AT AT+GSV SIMCOM_Ltd SIMCOM_SIM900 Revision: 1137B08SIM900M64_ST_DTMF_JD_MMS //The special FW supports the DTMF detecting. AT+CREG? //Check registration status +CREG: 0,1 AT+CSQ //Check signal quality +CSQ: 27,0 SIM900 & WCDMA Series Modules_ Application

33 AT+DDET=1 //enable DTMF detection Set up a call connection ATD ; //Set up a call and wait for call connected. +DTMF:1 //When the module detects the DTMF, URC will be reported via serial port. //Report the DTMF value. +DTMF:2 +DTMF:3 +DTMF:4 +DTMF:5 +DTMF:6 +DTMF:7 +DTMF:8 +DTMF:9 +DTMF:* +DTMF:0 +DTMF:# Receive an incoming call RING ATA // Answering an incoming call. +DTMF:1 //When the module detects the DTMF, URC will be reported via serial port. //Report the DTMF value. +DTMF:2 +DTMF:3 +DTMF:4 SIM900 & WCDMA Series Modules_ Application

34 +DTMF:5 +DTMF:6 +DTMF:7 +DTMF:8 +DTMF:9 +DTMF:* +DTMF:0 +DTMF:# Note: For the detail, please help to refer SIM900_DDET_Application Note_V SIM900 Series Modules Jamming detection Application Log The Jamming Detection function is developed for detecting a Jamming to the device by AT command AT+SJDR. With this solution, in case there is a Jamming, the event can be reported by URC or indicated by a dedicated GPIO. Note: For SIM900/SIM900B/SIM900D, the GPIO and the pin is different. In normal mode (No Jamming detected), the GPIO s logic level is low; when jamming detected, it will toggle to high level. The GPIO number for each module: SIM900: PIN68 SIM900D: PIN40 SIM900B: PIN32 RDY +CFUN: 1 +CPIN: READY Call Ready AT AT+GSV SIMCOM_Ltd SIMCOM_SIM900 SIM900 & WCDMA Series Modules_ Application

35 Revision: 1137B08SIM900M64_ST_DTMF_JD_MMS //The special FW supports the Jamming detecting. Disable Jamming detection: AT+SJDR=0 //Switch off jamming detection. AT+SJDR? //Ask current status. +SJDR:0 //Current status is disabled. Enable Jamming detection: In mode 0 AT+SJDR=1,0 //Enable Jamming detect in mode 0. AT+SJDR? //Module detected Jamming. //Ask status. +SJDR:1,0,1 //Jamming detected. //Module in normal condition. AT+SJDR? //Ask status. +SJDR:1,0,0 //No Jamming. In mode 1 AT+SJDR=1,1 //Enable Jamming detect in mode 1. The URC will report automatically Module detected Jamming +SJDR: JAMMING DETECTED //Jamming detected. Module in normal condition +SJDR:NO JAMMING //No Jamming. In mode 2 and mode 3 If you set AT+SJDR=1,2 you need to check the GPIO status to get the jamming result. If you set AT+SJDR=1,3 the results would indicate through not only serial port but also GPIO. Note: For detail, please help to refer SIM900_JD_Application Note_V SIM900 Series Modules GSM location Application Log The GSM Location function is designed base on Google Map service, with a single AT command SIM900 & WCDMA Series Modules_ Application

36 AT+CIPGSMLOC (communicating with Google server), the module can get rough location information, date, and GMT+0 time. AT AT+GSV SIMCOM_Ltd SIMCOM_SIM908 Revision:1137B03SIM908M64_ST_TEST_CIPGSMLOC_ AT+CPIN? +CPIN: READY AT+CREG? +CREG: 0,1 AT+CSQ +CSQ: 31,0 AT+SAPBR=3,1,"Contype","GPRS" //Set bearer parameter AT+SAPBR=3,1,"APN","CMNET" AT+SAPBR=1,1 //Activate bearer context AT+SAPBR=2,1 +SAPBR: 1,1," " AT+CIPGSMLOC=1,1 +CIPGSMLOC: 0, , ,2011/11/09,09:53:09 SIM900 & WCDMA Series Modules_ Application

37 Note: For the detail, please help to refer SIM900_GSM Location AT Command Manual_V1.00. Smart Machine Smart Decision 10 SIM900 Series Modules Net Scan Application Log The Net Scan function is developed for helping customer to get the best cell (rxlev>10) information locally without SIM card plugged in. As a result, user can know which network and cell is the best one by AT command AT+CNETSCAN. Note: After you power on the module, you d better wait around 10s -15s since the module needs some time to search all the network signals. AT AT+GSV SIMCOM_Ltd SIMCOM_SIM900 Revision:1137B10SIM900M64_ST_ _CNETSCAN //The special test FW AT+CNETSCAN MOST SUITABLE CELL Operator:"CHINA MOBILE",MCC:460,MNC:0,Rxlev:47,Cellid:f621,Arfcn:0081 Operator:"CHINA MOBILE",MCC:460,MNC:0,Rxlev:27,Cellid:f411,Arfcn:0023 Operator:"CHINA MOBILE",MCC:460,MNC:0,Rxlev:25,Cellid:f412,Arfcn:0027 Operator:"CHINA MOBILE",MCC:460,MNC:0,Rxlev:26,Cellid:f212,Arfcn:0016 Operator:"CHINA MOBILE",MCC:460,MNC:0,Rxlev:13,Cellid:f2a1,Arfcn:0025 Operator:"CHINA MOBILE",MCC:460,MNC:0,Rxlev:16,Cellid:2061,Arfcn:0028 Operator:"CHINA MOBILE",MCC:460,MNC:0,Rxlev:12,Cellid:1323,Arfcn:0021 Operator:"CHINA MOBILE",MCC:460,MNC:0,Rxlev:14,Cellid:f651,Arfcn: OTHER SUITABLE CELL Operator:"CHN-UNICOM",MCC:460,MNC:1,Rxlev:26,Cellid:0e93,Arfcn:0723 Operator:"CHN-UNICOM",MCC:460,MNC:1,Rxlev:22,Cellid:b5f0,Arfcn:0110 Operator:"CHN-UNICOM",MCC:460,MNC:1,Rxlev:15,Cellid:3e45,Arfcn:0731 Operator:"CHN-UNICOM",MCC:460,MNC:1,Rxlev:14,Cellid:0e95,Arfcn:0725 Operator:"CHN-UNICOM",MCC:460,MNC:1,Rxlev:22,Cellid:0e94,Arfcn:0736 Operator:"CHN-UNICOM",MCC:460,MNC:1,Rxlev:17,Cellid:bc22,Arfcn:0117 Operator:"CHN-UNICOM",MCC:460,MNC:1,Rxlev:12,Cellid:be2b,Arfcn:0124 SIM900 & WCDMA Series Modules_ Application

38 11 SIM900 Series Modules FOTA Application Log The FOTA application means Firmware Over The Air, this solution provides a way to update the module firmware by SIMCom AT commands. The idea is downloading the delta file from a FTP server firstly and then writes to module flash. Note: The FOTA application must be supported by special FW from SIMCom. Standard FW doesn t support this feature. The files for SIM900 FOTA test are showed as below: 11.1 How to use our SIM900 EVB+SIM900TE module to do the FOTA test. This Example shows how to use the delta firmware file (the delta firmware file has been divided into two parts. Named simcom_1to2test delta and simcom_1to2test delta) to upgrade the FW from V1 to V2. We divided this file into two parts, just for testing used our EVB board. The reason is that AT+GTFOTA just can send the maximum 8K bytes data each time. (1). Use flash upgrade tool to do the FW upgrading. Upgrade the FW to 1137B10SIM900M64_ST_FOTA_TEST_V1.cla SIM900 & WCDMA Series Modules_ Application

39 (2). Follow below AT test logs to do the FOTA test. For the detail, please help to refer SIM900_FOTA_Application Note_V1.00. Note: I have changed two commands setting for your reference. AT+GTFOTA="WHD,8192,0,20000 // This command is used to upload the first delta file ms, the time you can set a proper one by yourself. AT+GTFOTA="WHD,3252,8192,20000 // This command is used to upload the second delta file ms, the time you can set a proper one by yourself. SIM900 & WCDMA Series Modules_ Application

40 11.2 How to do the FOTA test through MCU. For the customer who has their own MCU. They can follow our APP Note to download the delta firmware file (Named: simcom_1to2test.delta) from a FTP server. For example, you can put this file in someone s FTP. Follow below steps. SIM900 & WCDMA Series Modules_ Application

41 Note: For the detail, please help to refer SIM900_FOTA_Application Note_V SIM900 Series Modules TTS (Text To Speech) Application Log 12.1 Play synthetic speech locally by UCS2 coding text AT+DTAM=0 //Set synthetic speech played locally AT+CTTS=1," E E " //Text in UCS2 coding format, context of the text is WARNING! FIRE!. //Speech synthetized successfully, played locally. +CTTS:0 //Speech played over. Note: User needs to wait this response to play next speech! 12.2 Play synthetic speech remotely by ASIIC coding text AT+DTAM=1 //Set synthetic speech played remotely ATD ; Setup a voice call AT+CTTS=2,"WARNING! FIRE!" //Text in ASIIC coding format. SIM900 & WCDMA Series Modules_ Application

42 // Speech synthetized successfully, remotely. played +CTTS:0 //Speech played over. Note: User needs to wait this response to play next speech! 12.3 Stop playing synthetic speech AT+CTTS=0 //Stop playing synthetic speech Note: The currently supported beta FW is 1137B08SIM900M128_ST_TTS_TEST_0509. And this function can only be supported by SIM900 series ST128M flash module. For the detailed application, please help to refer SIM900_TTS_Application Note_V SIM900 Series Modules SMS Auto run Application Log (do some remote configuration of the SIM900 module by sending AT commands over SMS) Test Example: Through SMS sending AT+CFUN=1,1 to SIM900 to let it restart. 1. AT+CAUTORUN=1, phone number // 1 Enable this feature (the default value is 0, disabled) Phone number the AT feedback value, which you want to send to. 2. Please help to use the remote module or phone to send the SMS (AT+CFUN=1,1) to SIM900. //The content of SMS is AT+CFUN=1,1. 3. At last, you will find SIM900 restart. Note: If you have any interest with this new feature, please contact with us freely. SIM900 & WCDMA Series Modules_ Application

43 14 WCDMA Series Modules MMS Application Logs 14.1 MMS Send AT AT+CPIN? +CPIN: READY AT+CREG? +CREG: 0,1 AT+CPSI? +CPSI: WCDMA,Online,460-01,0xA809, ,WCDMA IMT 2000,279,10663,0,5.5,66,25,29,500 AT+CSQ +CSQ: 22,99 AT+CMMSCURL="mmsc.myuni.com.cn" +STIN: 25 // Set the MMS center URL without AT+CMMSPROTO=1," ",80 // or AT+CMMSPROTO=0," ",9201 AT+CGSOCKCONT=1,"IP","UNIWAP" // APN for mms is important AT+CMMSEDIT=1 // switch to edit mode AT+CMMSDOWN="TITLE",5 >TITLE // Set the title of MMS to TITLE. AT+CMMSDOWN="TEXT",5,"T1.TXT" >12345 // Add a text file named t1.txt with length of 5 bytes. AT+FSCD? +FSCD: C:/ //query the current directory. SIM900 & WCDMA Series Modules_ Application

44 AT+FSCD=Picture +FSCD: C:/Picture/ // Select C: /Picture/ as current directory AT+FSCD? +FSCD: C:/Picture/ AT+FSLS +FSLS: FILES: _ jpg // List directories/files in current directory // the file name which in current directory. AT+CMMSDOWN="FILE",1," _ jpg" // select JPG file from module memory //Add recipients AT+CMMSSEND=" " +CMMSSEND: 0 //Start MMS sending 14.2 MMS Receive +WAP_PUSH_MMS: " ","TLGhBbNMC7SA"," WAP_PUSH: 0,, F04408A C B8423F03A C F6E2F766E642E E6D6D732D6D B487AF848C C E4D D A2F2F31302E39352E E F544C E4D F A802B F D504C4D4E008A808E02644B AT+CMMSEDIT=0 AT+CMMSRECV=" //Receive MMS +CMMSRECV: 0 AT+CMMSSAVE=0 SIM900 & WCDMA Series Modules_ Application

45 +CMMSSAVE:0 AT+CMMSVIEW=0 +CMMSVIEW:0," "," ",,," :04:39"," 轛 Y ", ,""< >",30,347 1,"Photo048.jpg",7, ,"123.txt",4,3 15 WCDMA Series Modules TCP Application Logs 15.1 TCP Client AT+CPIN? +CPIN: READY AT+CSQ +CSQ: 27, 99 AT+CREG? +CREG: 0, 1 AT+CGSOCKCONT=1,"IP","CMNET" // Set the PDP context profile. AT+CSOCKSETPN=1 //Set active PDP context s profile number and it supports from 1 to 16. AT+NETOPEN="TCP", 8409, 0 //Open socket; 8409 is TCP port and 0 means single-client or tcp-server. Network opened AT+TCPCONNECT=" ", 8409 Connect ok // Establish TCP connection AT+TCPWRITE=5 // Send TCP data and the data length is 5. > HELLO +TCPWRITE: 5, 5 // the first 5 means that requested number of data bytes to be SIM900 & WCDMA Series Modules_ Application

46 transmitted, and the second 5 means that confirmed number of data bytes to be transmitted UDP Client AT+CPIN? +CPIN: READY AT+CSQ +CSQ: 27, 99 AT+CREG? +CREG: 0, 1 AT+CGSOCKCONT=1,"IP","CMNET" AT+CSOCKSETPN=1 AT+NETOPEN="UDP",8309 Network opened //8309 is UDP port. AT+UDPSEND=5," ",8309 > HELLO +UDPSEND: 5, 5 AT+UDPSEND=5," ",8309 > UDPSEND: 5, TCP Client (transparent mode) AT+CPIN? +CPIN: READY AT+CSQ +CSQ: 27, 99 SIM900 & WCDMA Series Modules_ Application

47 AT+CREG? +CREG: 0, 1 AT+CIPMODE=1 // 1 Transparent mode AT+NETOPEN="TCP", 8409 Network opened // Activate the specified socket s PDP context and Create a socket. AT&D1 // ON->OFF on DTR: Change to Command mode with remaining the connected call. AT+TCPCONNECT=" ", 8409 CONNECT // Establish TCP connection // +++ quit Switch from data mode to command mode ATO CONNECT // Switch from command mode to data mode // DTR Positive Edge-triggered quit ATO CONNECT Note: 1) +++ and Positive Edge-triggered only be available at Modem port and UART port. 2) UDP client can not be available under transparent mode? 15.4 Multi-Sockets AT+CPIN? +CPIN: READY AT+CSQ +CSQ: 26,99 AT+CREG? +CREG: 0,1 SIM900 & WCDMA Series Modules_ Application

48 AT+NETOPEN=,,1 Network opened // Activate the specified socket s PDP context and Select in multi-client mode AT+ CIPOPEN =? +CIPOPEN: (0-9), ("TCP", "UDP") AT+CIPOPEN=0,"TCP"," ", 8409 Connect ok // Establish a connection with TCP Server AT+CIPSEND=0,5 // Send data in the connection of number 0 and the data length is 5 > HELLO +CIPSEND: 5, 5 // the first 5 means that requested number of data bytes to be transmitted, and the second 5 means that confirmed number of data bytes to be transmitted. Send ok AT+CIPOPEN=2,"UDP"," ", 8309 // Establish a connection with UDP Server AT+CIPSEND=2,5 // Send data in the connection of number 2 and the data length is 5. > CIPSEND: 5, 5 AT+CIPCLOSE=0 //Close the connection of number 0 AT+CIPOPEN? +CIPOPEN: 0 +CIPOPEN: 1 +CIPOPEN: 2, "UDP", " ", CIPOPEN: 3 +CIPOPEN: 4 +CIPOPEN: 5 +CIPOPEN: 6 +CIPOPEN: 7 +CIPOPEN: 8 +CIPOPEN: 9 AT+CIPCLOSE=2 //Close the connection of number 2 SIM900 & WCDMA Series Modules_ Application

49 AT+CIPOPEN? +CIPOPEN: 0 +CIPOPEN: 1 +CIPOPEN: 2 +CIPOPEN: 3 +CIPOPEN: 4 +CIPOPEN: 5 +CIPOPEN: 6 +CIPOPEN: 7 +CIPOPEN: 8 +CIPOPEN: 9 AT+NETCLOSE Network closed //Before you execute this command, you must use AT+CIPOPEN? to make sure that all the sockets have been closed. Otherwise, this command will give a error feedback. 16 WCDMA Series Modules FTP Application Logs 16.1 FTP PUT AT+CPIN? +CPIN: READY AT+CSQ +CSQ: 27, 99 AT+CREG? +CREG: 0, 1 AT+fscd=C:/Picture +FSCD: C:/Picture/ // Set C:/Picture as current directory AT+fsls +FSLS: FILES: _ jpg // List directories/files in current directory At+cgsockcont=1,"ip","3gnet" //set the PDP context profile. SIM900 & WCDMA Series Modules_ Application

50 At+cftpport=21 // Set FTP server port At+cftpserv? +CFTPSERV: "" At+cftpserv="simcom.exavault.com" // Set FTP server domain name. at+cftpun=" Zhangkun" // Set user name for FTP access at+cftppw="1234" // Set user password for FTP access at+cftpputfile=" _ jpg",1 +CFTPPUTFILE: 0 // root path // 0 means succeed. at+cftpputfile="/zhangkun/ _ jpg",1 +CFTPPUTFILE: 0 Note: 1) Put from EFS, at+cftpputfile; 2) Put from TE, at+cftpput. // to sub folder // 0 means succeed FTP GET AT+CPIN? +CPIN: READY AT+CSQ +CSQ: 21,99 AT+CREG? +CREG: 0,1 +STIN: 25 AT+CFTPSERV="simcom.exavault.com" AT+CFTPPORT=21 SIM900 & WCDMA Series Modules_ Application

51 at+cftpun=" Zhangkun" at+cftppw="1234" AT+CGSOCKCONT=1,"IP","3GNET" AT+CFTPPUT="TEST.txt" // upload data from TE to FTP server and save it as TEST.txt. +CFTPPUT: BEGIN // <CTRL+Z> to put AT+CFTPGET="TEST.txt +CFTPGET: DATA, CFTPGET: 0 // get file from FTP server to TE. // 0 means succeed. AT+CFTPGETFILE="TEST.txt",1 +CFTPGETFILE: 0 // get file from FTP server to EFS. AT+FSCD? +FSCD: C:/ AT+FSCD=C:/Picture +FSCD: C:/Picture/ AT+FSLS +FSLS: FILES: _ jpg _ jpg TEST.txt Note: 1) Get file to EFS, at+cftpgetfile; 2) Get file to TE, at+cftpget. //Which was got from FTP server just now. SIM900 & WCDMA Series Modules_ Application

52 17 WCDMA Series Modules HTTP Application Logs 17.1 HTTP GET AT+chttpact="register.hut1.ru",80 //Connect HTTP server +CHTTPACT: REQUEST GET HTTP/1.0<CRLF> Accept: */*<CRLF> Referer: Accept-Language: zh-cn<crlf> Proxy-Connection: Keep-Alive<CRLF> User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; InfoPath.1;.NET CLR )<CRLF> Host: register.hut1.ru<crlf> <CRLF> +CHTTPACT: DATA,224 http/ ok server: nginx/ date: thu, 21 jul :12:29 gmt content-type: application/x-javascript content-length: 0 last-modified: mon, 22 dec :54:34 gmt connection: close accept-ranges: bytes +CHTTPACT: 0 SIM900 & WCDMA Series Modules_ Application

53 17.2 HTTP POST AT+CHTTPACT="gav72.hut1.ru",80 +CHTTPACT: REQUEST POST HTTP/1.0<CRLF> Accept: */*<CRLF> Referer: Accept-Language: zh-cn <CRLF> Content-Type: application/x-www-form-urlencoded <CRLF> Proxy-Connection: Keep-Alive <CRLF> User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; InfoPath.1;.NET CLR ) <CRLF> Host: gav72.hut1.ru <CRLF> Content-Length: 23 <CRLF> Pragma: no-cache <CRLF> <CRLF> fparam=4545&sparam=4545 <CRLF> +CHTTPACT: DATA,705 http/ ok server: nginx/ date: thu, 21 jul :01:41 gmt content-type: text/html; charset=windows-1251 connection: close x-powered-by: php/4.3.9 expires: thu, 01 jan :00:01 gmt last-modified: thu, 21 jul :01:41 gmt fparam=4545; sparam=4545;<!-- ><!-- "><!-- '><!-- ;><!-- SIM900 & WCDMA Series Modules_ Application

54 --></textarea></form></title></comment></a></div></span></ilayer></layer></iframe></noframes></style></ noscript></table></script></applet></font><!-- inner counter--><script type="text/javascript">pseudocounter = ' type="text/javascript" src="' + pseudocounter + '?' + Math.random() + '"></scr' + 'ipt>');</script> +CHTTPACT: 0 18 WCDMA Series Modules Application Logs SMTP :(Simple Mail Transfer Protocol) AT+CPIN? +CPIN: READY AT+CSQ +CSQ: 27, 99 AT+CREG? + CREG: 0, 1 AT+smtpsrv="smtp.sim.com",25 //Set SMTP server address and port number. AT+smtpauth=1,"liangliang.wu","123456!" // SMTP server authentication, user name, password AT+smtpfrom="liangliang.wu@sim.com","light" // Configure sender s mail address and present name. AT+smtprcpt=0,0,"liangliang.wu@sim.com","hello" // Configure recipients mail address and name for each SIM900 & WCDMA Series Modules_ Application

55 . AT+smtpsub="hello from light" // Write the subject for each mail. AT+smtpbody > > this is my greeting, how are you? // Write the content for each mail. AT+cgsockcont=1,"ip","3gnet" // Set the PDP context profile. AT+fscd=C:/Picture +FSCD: C:/Picture/ // Set C:/Picture as current directory AT+fsls + FSLS: FILES: _ jpg _ jpg TEST2.TXT // List directories/files in current directory AT+smtpfile=1," _ jpg" //Select files from current directory in file system as s attachments. AT+smtpfile=2,"TEST2.TXT" AT+smtpsend // Initiate session and send . +SMTP: +SMTP: SUCCESS // Send successfully POP3 :(Post Office Protocol-Version3) AT+CPIN? +CPIN: READY AT+CSQ +CSQ: 27, 99 AT+CREG? SIM900 & WCDMA Series Modules_ Application

56 + CREG: 0, 1 AT+cgsockcont=1,"ip","3gnet" // Set the PDP context profile. AT+pop3srv="pop3.163.com", username", psd",110 //Configure POP3 server and access account. AT+pop3in +POP3: SUCCESS //Establish TCP session and access POP3 server. AT+pop3num +POP3: 509, //Inquire the number of unread and the total size of these unread s. AT+pop3list=1 +POP3: 1, 3095 //List the ID-1 s size. AT+pop3hdr=1 From: <Alina@Dell.com> Date: Thu, 11 Jan :22: Subject: //Get the ID-1 s header. AT+pop3get=1 +POP3: SUCCESS C:/ / /, 000.TXT //Get ID-1 and save its attachments into directory C:/ . AT+ pop3read Subject: Date: Thu, 11 Jan :22: From: <Alina@Dell.com> To: <inviolet@ 163.com> Hi, I have had lunch. Now, I will study English. What do you do? Best regards! Alina // Read the content of , including header and body. SIM900 & WCDMA Series Modules_ Application