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 operate in SMS text mode. )
8. Type “AT+CMGW=”+651234567″ ” 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 successfully sent.