Send SMS using Hyperterminal

[bmlephoto]

Still struggling with sending SMS through hyperterminal. I intend to later
work on a PowerBASIC application. I can communicate thorugh
RS-232 that connects my Fargo Maestro 100 GSM Modem.
I can send and receive SMS'es using AT commands perfectly in text
format (AT+CMGF=1) but am experiencing problems with PDU format.

I tried all sorts of ways to issue a send (AT+CMGS) with PDU
format (AT+CMGF=0). Please help me to realize this. Here is my syntax:

AT+CMGF = 0

My CSCA (Message center number) is,
AT+CSCA?
+CSCA: "+2666000002",145

The desitnation number is:
+26663104703 (+266 is the country code for Lesotho)

Can you discover anything wrong with:
I've tried using PDU length AT+CMGS=16<CR>
> 002100088136017430000004D4F29C0E

OR

AT+CMGS=19<CR>
> 0022000000000B916266134007F304D4F29C0E<ctrl-Z> and it still
doesn't work?

The sent message is "Test"?. Remember test works fine in Text mode (AT+CMGF=1)

The result is always, +CMS ERROR: 304. I looked up this error code and it is
"Invalid PDU Mode Parameter"

I tried everything I know, please help?

[shibby]

Hi,

Your PDU string is not encoded properly. When i use a decoder it displays as a SMS-COMMAND PDU, but should be a SMS-SUBMIT.

You can find a good document on this here:

http://www.activexperts.com/activsms/sms/pdu/

If you only want to send text messages you can also consider using text mode instead of PDU mode:

http://www.smssolutions.net/tutorials/gsm/sendsmsat/

Leon

[nigege]

i try ur msg, the result give me
Length: 18
0691626600002011000B916266134007F30000FF04D4F29C0E
not same as urs one... i get it from a functionable software
i think ur pdu convertor got problem

[joshua__lim]

You can use PDUSpy, a freeware, to encode/decode your PDU.