hi,
    I am having data  collected by energy meter,I have to send this data to the server by using modem. which at comands  i have to use. i have used at command
 AT+CGDCONT=1,"ip","airtelgprs.com"
  AT+CGPADDR=1
here i will be getting the dynamic id
 AT+CGDATA="ppp",1
here i got garbage  after some time it is showing no carrier