How To Send SMS From Computer Using AT Commands With GSM/GPRS Modem

1. Plug In Your GSM/GPRS modem

2. Find out which COM Port the modem is connecting

3. Start-> Accessories-> Communication-> ­ Hyperterminal

4. Open new connection

5. "Connect using:" the correct COM port, you will see a
windows->change ­ Bits per second to "9600" (for GSM)"115200" (for GPRS)

6. Type "AT" and press Enter (it'll show "ok")

7. Type "AT+CMGF=1" and press Enter (it'll show "ok". It is to set the GSM / GPRS modem to operatein SMS text mode. )

8. Type "AT+CMGW="+6512 ­34567" " and press Enter (it'll show ">"."+65" is country code,"1234567" is recipient's number)

9. Start typing SMS. When finished,press Ctrl + Z (it'll show"+CMGW:1", it means the message is stored as index:1 in the message storage)

10. Type "AT+CMSS=1" and press Enter (It'll show something like"+CMSS: 219". "219" is the reference no of the sent message)

11. If it shows "OK" at the end, it means the message is successfullysent.