//re-dial the last number
"AT+BLDN\r";
//dial the number
"ATD%s;\r",dialNum;
//toggle voice recognition in AG(status=activation/deactivation)
"AT+BVRA=%d\r",status;
//Accept an incoming call
"ATA\r"
//Reject an incoming call or Terminate a call
"AT+CHUP\r";