HTTP POST request error when using SIM900

hi, im using a 8051 uC to post to a thingspeak.com/ channel using a SIM900 GSM modem. i used the following commands. AT+SAPBR=3,1,"Contype","GPRS" OK AT+SAPBR=3,1,"APN","WWW" OK AT+SAPBR=1,1 OK...
HTTP POST request error when using SIM900

hi, im using a 8051 uC to post to a thingspeak.com/ channel using a SIM900 GSM modem. i used the following commands. AT+SAPBR=3,1,"Contype","GPRS" OK AT+SAPBR=3,1,"APN","WWW" OK AT+SAPBR=1,1 OK...
89S52 not able to receive complete AT Response from SIM900 GSM MOdem

Hello I have connected SIM 900 (GSM Modem) with 89S52 Controller, via RS232 Communication. If I send AT from controller to Modem , it is replying with AT OK but my controller is just able to receive...
89S52 not able to receive complete AT Response from SIM900 GSM MOdem

Hello I have connected SIM 900 (GSM Modem) with 89S52 Controller, via RS232 Communication. If I send AT from controller to Modem , it is replying with AT OK but my controller is just able to receive...
how i can connect 8051 uc to gsm module

plz help me out how i can connect 8051 uc to gsm module . im working on my final year project. plz send me the code.