Hello everyone,

I'm "desperate" and i hope you guys can help me.

I'm trying to send SMS using telnet connection and AT comands using the hardware "2N - VoiceBlue Lite", i think i've to use following commands:

AT!G=A6 Activation of SMS control(can be activated only in one session at same time)
AT^SM=ch,len,pdu,csum Request to send a message via GSM module 0..31 or via any GSM module (ch=32). Possible answers: *smserr (busy,write) or *smsout

But i simple cannot find an example to understand the correct sintax/sequence of comands.

If i want to send the message "Hello World" to the cellphone number 9112312312, what would be the correct sequence/sintax of commands?

Any help or link to more information/examples would be very appreciated.

Thanks in advance.

ps: I apologize if this is not the correct forum but i'm really desperate.

hello,

Can you guys help me how to calculate the last param (csum) of the following command:

AT^SM=ch,len,pdu,csum

I understand the ch,len and pdu parameters but i'm having a hard time understanding the csum.

Thank you.

I've login by telnet to the 2N - VoiceBlue Lite. Executed the:

AT!G=A6 and received the OK msg.

But now i'm having trouble with the correct params for the AT^SR command, expecially the CSUM.

I've enconded a msg using de PDU Enconder. The param ch (module) active is number 0.


AT^SM=0,68,26069110090000F111000D92301569324394F50000AA0CC8F71D14969741F977FD07,??


ch = 0 (seen by using the commnd AT&QALL)

len = 68 Bytes, i'm using the function strlen() from PHP


But how do i calculate the correct csum?!


Thank you for you time.

To send a SMS,
U only need two commands.

#set textmode
at+cmgf=1
OK

#send sms
at+cmgs="[phone number]"
>Hello World [Ctrl+Z]
OK

PS:
Do not use PDU mode,
which is default !

Best Wishes
Ralf Steffler