How to send 8 bit data messages from textmode ?

[jan1983]

Hi,

I have to send SMS messages from a script. I already able to send text messages so this part is working.

In some cases i have to send raw 8 bit data, i found some documents on how to do this in PDU mode, but to keep the script simple i want to know if it is also possible to send this data using simple AT commands

Please Help !

[kruimel]

You should use the following commands to send 8 bit data from textmode. Please not that the ME characterset has to be set to "UCS" or "HEX" like this:

AT+CSCS="HEX" or AT+CSCS="UNICODE"

First set the DCS to 0x04 using this command

AT+CSMP=1,244,0,4

Then send your message and enter the data as Hex, for example to send ABC to +447799882390:

AT+CMGS="+447799882390"
> 414243 <CTRL>

Hope this helps