Hi Horace,
Thank you very much.
yes, I miss \r or 0D in hex. Now when I sent AT\r, I get OK.
Just now I tried to use AT command to make missed call and send sms, but It was unsuccessful. It seems that there is some wrong comment.
First I sent AT\r, then modem answer OK\r\n
Next I sent AT+CREG?\r , then modem +CREG: 0,2\r\n\r\nOK\r\n
I try to make missed call and sent ATD( +country code and my phone number);\r , then modem -> NO CARRIER\r\n
I do not understand what is NO CARRIER means..
then I try to send sms
I sent AT+CMGS="+country code and my phone number"\r , then modem answer with \n\r>
then I sent my message >halo \r , then modem answer \n\r> again.
I was stuck here. I have read the datasheet for MTCBA-G-U-F4 because I cannot get for MTSMC-G-F4. I hope that they are the same
They said that I have to hit CTRL+Z to send message, but It was not worked.
I will attach the datasheet (page 27).
Then I try to follow from
SMS Tutorial: How to Send SMS Messages from a Computer/PC Using a Mobile Phone or GSM/GPRS Modem? AT Commands
AT\r
OK\n\r
AT+CMGF=1\r
OK\n\r
AT+CMGW="+country code and my phone number"\n\r
\n\r>
> A simple demo of SMS text messaging.\r
\n\r>
> A simple demo of SMS text messaging.\r
\n\r>
AT\r
\n\r>
I was stuck on here again, the modem always answer \n\r>
Please help me to solve it.
I will really appreciate.
Thanks